{"containers": {"cna": {"affected": [{"product": "Apache HTTP Server", "vendor": "Apache Software Foundation", "versions": [{"status": "affected", "version": "Apache HTTP Server through 2.2.34 and 2.4.x through 2.4.27"}]}], "datePublic": "2017-09-18T00:00:00.000Z", "descriptions": [{"lang": "en", "value": "Apache httpd allows remote attackers to read secret data from process memory if the Limit directive can be set in a user's .htaccess file, or if httpd.conf has certain misconfigurations, aka Optionsbleed. This affects the Apache HTTP Server through 2.2.34 and 2.4.x through 2.4.27. The attacker sends an unauthenticated OPTIONS HTTP request when attempting to read secret data. This is a use-after-free issue and thus secret data is not always sent, and the specific data depends on many factors including configuration. Exploitation with .htaccess can be blocked with a patch to the ap_limit_section function in server/core.c."}], "problemTypes": [{"descriptions": [{"description": "use-after-free", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2021-06-06T10:11:48.000Z", "orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "shortName": "apache"}, "references": [{"name": "RHSA-2017:3113", "tags": ["vendor-advisory", "x_refsource_REDHAT"], "url": "https://access.redhat.com/errata/RHSA-2017:3113"}, {"name": "100872", "tags": ["vdb-entry", "x_refsource_BID"], "url": "http://www.securityfocus.com/bid/100872"}, {"tags": ["x_refsource_CONFIRM"], "url": "http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html"}, {"tags": ["x_refsource_CONFIRM"], "url": "http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html"}, {"tags": ["x_refsource_CONFIRM"], "url": "https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html"}, {"name": "RHSA-2017:2882", "tags": ["vendor-advisory", "x_refsource_REDHAT"], "url": "https://access.redhat.com/errata/RHSA-2017:2882"}, {"name": "RHSA-2017:2972", "tags": ["vendor-advisory", "x_refsource_REDHAT"], "url": "https://access.redhat.com/errata/RHSA-2017:2972"}, {"tags": ["x_refsource_MISC"], "url": "https://blog.fuzzing-project.org/uploads/apache-2.2-optionsbleed-backport.patch"}, {"tags": ["x_refsource_CONFIRM"], "url": "https://support.apple.com/HT208331"}, {"name": "1039387", "tags": ["vdb-entry", "x_refsource_SECTRACK"], "url": "http://www.securitytracker.com/id/1039387"}, {"tags": ["x_refsource_CONFIRM"], "url": "https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03909en_us"}, {"name": "RHSA-2017:3475", "tags": ["vendor-advisory", "x_refsource_REDHAT"], "url": "https://access.redhat.com/errata/RHSA-2017:3475"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/hannob/optionsbleed"}, {"tags": ["x_refsource_MISC"], "url": "https://svn.apache.org/viewvc/httpd/httpd/branches/2.4.x/server/core.c?r1=1805223&r2=1807754&pathrev=1807754&view=patch"}, {"name": "RHSA-2017:3240", "tags": ["vendor-advisory", "x_refsource_REDHAT"], "url": "https://access.redhat.com/errata/RHSA-2017:3240"}, {"name": "RHSA-2017:3195", "tags": ["vendor-advisory", "x_refsource_REDHAT"], "url": "https://access.redhat.com/errata/RHSA-2017:3195"}, {"name": "RHSA-2017:3018", "tags": ["vendor-advisory", "x_refsource_REDHAT"], "url": "https://access.redhat.com/errata/RHSA-2017:3018"}, {"tags": ["x_refsource_CONFIRM"], "url": "http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html"}, {"name": "RHSA-2017:3239", "tags": ["vendor-advisory", "x_refsource_REDHAT"], "url": "https://access.redhat.com/errata/RHSA-2017:3239"}, {"name": "RHSA-2017:3476", "tags": ["vendor-advisory", "x_refsource_REDHAT"], "url": "https://access.redhat.com/errata/RHSA-2017:3476"}, {"name": "105598", "tags": ["vdb-entry", "x_refsource_BID"], "url": "http://www.securityfocus.com/bid/105598"}, {"tags": ["x_refsource_CONFIRM"], "url": "https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2017-9798"}, {"tags": ["x_refsource_CONFIRM"], "url": "http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html"}, {"name": "RHSA-2017:3114", "tags": ["vendor-advisory", "x_refsource_REDHAT"], "url": "https://access.redhat.com/errata/RHSA-2017:3114"}, {"name": "RHSA-2017:3477", "tags": ["vendor-advisory", "x_refsource_REDHAT"], "url": "https://access.redhat.com/errata/RHSA-2017:3477"}, {"tags": ["x_refsource_MISC"], "url": "http://openwall.com/lists/oss-security/2017/09/18/2"}, {"tags": ["x_refsource_CONFIRM"], "url": "https://security.netapp.com/advisory/ntap-20180601-0003/"}, {"name": "RHSA-2017:3194", "tags": ["vendor-advisory", "x_refsource_REDHAT"], "url": "https://access.redhat.com/errata/RHSA-2017:3194"}, {"tags": ["x_refsource_MISC"], "url": "https://security-tracker.debian.org/tracker/CVE-2017-9798"}, {"name": "RHSA-2017:3193", "tags": ["vendor-advisory", "x_refsource_REDHAT"], "url": "https://access.redhat.com/errata/RHSA-2017:3193"}, {"name": "DSA-3980", "tags": ["vendor-advisory", "x_refsource_DEBIAN"], "url": "http://www.debian.org/security/2017/dsa-3980"}, {"tags": ["x_refsource_MISC"], "url": "https://blog.fuzzing-project.org/60-Optionsbleed-HTTP-OPTIONS-method-can-leak-Apaches-server-memory.html"}, {"name": "42745", "tags": ["exploit", "x_refsource_EXPLOIT-DB"], "url": "https://www.exploit-db.com/exploits/42745/"}, {"name": "GLSA-201710-32", "tags": ["vendor-advisory", "x_refsource_GENTOO"], "url": "https://security.gentoo.org/glsa/201710-32"}, {"tags": ["x_refsource_MISC"], "url": "https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html"}, {"name": "[httpd-cvs] 20190815 svn commit: r1048743 [4/4] - 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in /websites/staging/httpd/trunk/content: ./ security/json/CVE-2020-13938.json security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html", "tags": ["mailing-list", "x_refsource_MLIST"], "url": "https://lists.apache.org/thread.html/r75cbe9ea3e2114e4271bbeca7aff96117b50c1b6eb7c4772b0337c1f%40%3Ccvs.httpd.apache.org%3E"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "security@apache.org", "ID": "CVE-2017-9798", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "Apache HTTP Server", "version": {"version_data": [{"version_value": "Apache HTTP Server through 2.2.34 and 2.4.x through 2.4.27"}]}}]}, "vendor_name": "Apache Software Foundation"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "Apache httpd allows remote attackers to read secret data from process memory if the Limit directive can be set in a user's .htaccess file, or if httpd.conf has certain misconfigurations, aka Optionsbleed. This affects the Apache HTTP Server through 2.2.34 and 2.4.x through 2.4.27. The attacker sends an unauthenticated OPTIONS HTTP request when attempting to read secret data. This is a use-after-free issue and thus secret data is not always sent, and the specific data depends on many factors including configuration. Exploitation with .htaccess can be blocked with a patch to the ap_limit_section function in server/core.c."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "use-after-free"}]}]}, "references": {"reference_data": [{"name": "RHSA-2017:3113", "refsource": "REDHAT", "url": "https://access.redhat.com/errata/RHSA-2017:3113"}, {"name": "100872", "refsource": "BID", "url": "http://www.securityfocus.com/bid/100872"}, {"name": "http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html", "refsource": "CONFIRM", "url": "http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html"}, {"name": "http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html", "refsource": "CONFIRM", "url": "http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html"}, {"name": "https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html", "refsource": "CONFIRM", "url": "https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html"}, {"name": "RHSA-2017:2882", "refsource": "REDHAT", "url": "https://access.redhat.com/errata/RHSA-2017:2882"}, {"name": "RHSA-2017:2972", "refsource": "REDHAT", "url": "https://access.redhat.com/errata/RHSA-2017:2972"}, {"name": "https://blog.fuzzing-project.org/uploads/apache-2.2-optionsbleed-backport.patch", "refsource": "MISC", "url": "https://blog.fuzzing-project.org/uploads/apache-2.2-optionsbleed-backport.patch"}, {"name": "https://support.apple.com/HT208331", "refsource": "CONFIRM", "url": "https://support.apple.com/HT208331"}, {"name": "1039387", "refsource": "SECTRACK", "url": "http://www.securitytracker.com/id/1039387"}, {"name": "https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03909en_us", "refsource": "CONFIRM", "url": "https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03909en_us"}, {"name": "RHSA-2017:3475", "refsource": "REDHAT", "url": "https://access.redhat.com/errata/RHSA-2017:3475"}, {"name": "https://github.com/hannob/optionsbleed", "refsource": "MISC", "url": "https://github.com/hannob/optionsbleed"}, {"name": "https://svn.apache.org/viewvc/httpd/httpd/branches/2.4.x/server/core.c?r1=1805223&r2=1807754&pathrev=1807754&view=patch", "refsource": "MISC", "url": "https://svn.apache.org/viewvc/httpd/httpd/branches/2.4.x/server/core.c?r1=1805223&r2=1807754&pathrev=1807754&view=patch"}, {"name": "RHSA-2017:3240", "refsource": "REDHAT", "url": "https://access.redhat.com/errata/RHSA-2017:3240"}, {"name": "RHSA-2017:3195", "refsource": "REDHAT", "url": "https://access.redhat.com/errata/RHSA-2017:3195"}, {"name": "RHSA-2017:3018", "refsource": "REDHAT", "url": "https://access.redhat.com/errata/RHSA-2017:3018"}, {"name": "http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html", "refsource": "CONFIRM", "url": "http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html"}, {"name": "RHSA-2017:3239", "refsource": "REDHAT", "url": "https://access.redhat.com/errata/RHSA-2017:3239"}, {"name": "RHSA-2017:3476", "refsource": "REDHAT", "url": "https://access.redhat.com/errata/RHSA-2017:3476"}, {"name": "105598", "refsource": "BID", "url": "http://www.securityfocus.com/bid/105598"}, {"name": "https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2017-9798", "refsource": "CONFIRM", "url": "https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2017-9798"}, {"name": "http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html", "refsource": "CONFIRM", "url": "http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html"}, {"name": "RHSA-2017:3114", "refsource": "REDHAT", "url": "https://access.redhat.com/errata/RHSA-2017:3114"}, {"name": "RHSA-2017:3477", "refsource": "REDHAT", "url": "https://access.redhat.com/errata/RHSA-2017:3477"}, {"name": "http://openwall.com/lists/oss-security/2017/09/18/2", "refsource": "MISC", 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This affects the Apache HTTP Server through 2.2.34 and 2.4.x through 2.4.27. The attacker sends an unauthenticated OPTIONS HTTP request when attempting to read secret data. This is a use-after-free issue and thus secret data is not always sent, and the specific data depends on many factors including configuration. Exploitation with .htaccess can be blocked with a patch to the ap_limit_section function in server/core.c."}, {"lang": "es", "value": "Apache httpd permite que atacantes remotos lean datos secretos de la memoria de proceso si la directiva Limit se puede establecer en un archivo .htaccess del usuario o si existen ciertos errores de configuraci\u00f3n en httpd.conf. Esto tambi\u00e9n se conoce como Optionsbleed. Esta vulnerabilidad afecta a Apache HTTP Server hasta la versi\u00f3n 2.2.34 y a las versiones 2.4.x hasta la 2.4.27. El atacante env\u00eda una petici\u00f3n HTTP OPTIONS sin autenticar cuando intenta leer datos secretos. Este es un problema de uso de memoria previamente liberada y, por lo tanto, los datos secretos no siempre se env\u00edan y los datos espec\u00edficos dependen de muchos factores, entre los que se encuentra la configuraci\u00f3n. La explotaci\u00f3n con .htaccess puede bloquearse con un parche en la funci\u00f3n ap_limit_section en server/core.c."}], "id": "CVE-2017-9798", "lastModified": "2025-11-04T16:15:41.470", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 5.0, "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2017-09-18T15:29:00.307", "references": [{"source": "security@apache.org", "tags": ["Mailing List", "VDB Entry"], "url": "http://openwall.com/lists/oss-security/2017/09/18/2"}, {"source": "security@apache.org", "tags": ["Third Party Advisory"], "url": "http://www.debian.org/security/2017/dsa-3980"}, {"source": "security@apache.org", "tags": ["Patch", "Third Party Advisory"], "url": "http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html"}, {"source": "security@apache.org", "tags": ["Patch", "Third Party Advisory"], "url": "http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html"}, {"source": "security@apache.org", "tags": ["Patch", "Third Party Advisory"], "url": 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{"acknowledgement": "Red Hat would like to thank Hanno B\u00f6ck for reporting this issue.", "affected_release": [{"advisory": "RHSA-2017:3477", "cpe": "cpe:/a:redhat:jboss_core_services:1::el6", "package": "jbcs-httpd24-httpd-0:2.4.23-125.jbcs.el6", "product_name": "JBoss Core Services on RHEL 6", "release_date": "2017-12-15T00:00:00Z"}, {"advisory": "RHSA-2017:3477", "cpe": "cpe:/a:redhat:jboss_core_services:1::el6", "package": "jbcs-httpd24-mod_bmx-0:0.9.6-15.GA.jbcs.el6", "product_name": "JBoss Core Services on RHEL 6", "release_date": "2017-12-15T00:00:00Z"}, {"advisory": "RHSA-2017:3477", "cpe": "cpe:/a:redhat:jboss_core_services:1::el6", "package": "jbcs-httpd24-mod_cluster-native-0:1.3.8-1.Final_redhat_1.jbcs.el6", "product_name": "JBoss Core Services on RHEL 6", "release_date": "2017-12-15T00:00:00Z"}, {"advisory": "RHSA-2017:3476", "cpe": "cpe:/a:redhat:jboss_core_services:1::el7", "package": "jbcs-httpd24-httpd-0:2.4.23-125.jbcs.el7", "product_name": "JBoss Core Services on RHEL 7", "release_date": "2017-12-15T00:00:00Z"}, {"advisory": "RHSA-2017:3476", "cpe": "cpe:/a:redhat:jboss_core_services:1::el7", "package": "jbcs-httpd24-mod_bmx-0:0.9.6-15.GA.jbcs.el7", "product_name": "JBoss Core Services on RHEL 7", "release_date": "2017-12-15T00:00:00Z"}, {"advisory": "RHSA-2017:3476", "cpe": "cpe:/a:redhat:jboss_core_services:1::el7", "package": "jbcs-httpd24-mod_cluster-native-0:1.3.8-1.Final_redhat_1.jbcs.el7", "product_name": "JBoss Core Services on RHEL 7", "release_date": "2017-12-15T00:00:00Z"}, {"advisory": "RHSA-2017:2972", "cpe": "cpe:/o:redhat:enterprise_linux:6", "package": "httpd-0:2.2.15-60.el6_9.6", "product_name": "Red Hat Enterprise Linux 6", "release_date": "2017-10-19T00:00:00Z"}, {"advisory": "RHSA-2017:3195", "cpe": "cpe:/o:redhat:rhel_eus:6.7", "package": "httpd-0:2.2.15-47.el6_7.5", "product_name": "Red Hat Enterprise Linux 6.7 Extended Update Support", "release_date": "2017-11-13T00:00:00Z"}, {"advisory": "RHSA-2017:2882", "cpe": 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"2017-10-24T00:00:00Z"}, {"advisory": "RHSA-2017:3018", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el6", "package": "httpd24-httpd-0:2.4.27-8.el6", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUS", "release_date": "2017-10-24T00:00:00Z"}, {"advisory": "RHSA-2017:3018", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "httpd24-0:1.1-18.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7", "release_date": "2017-10-24T00:00:00Z"}, {"advisory": "RHSA-2017:3018", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "httpd24-curl-0:7.47.1-4.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7", "release_date": "2017-10-24T00:00:00Z"}, {"advisory": "RHSA-2017:3018", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "httpd24-httpd-0:2.4.27-8.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7", "release_date": "2017-10-24T00:00:00Z"}, {"advisory": "RHSA-2017:3018", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "httpd24-mod_auth_kerb-0:5.4-33.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7", "release_date": "2017-10-24T00:00:00Z"}, {"advisory": "RHSA-2017:3018", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "httpd24-nghttp2-0:1.7.1-6.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7", "release_date": "2017-10-24T00:00:00Z"}, {"advisory": "RHSA-2017:3018", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "httpd24-0:1.1-18.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUS", "release_date": "2017-10-24T00:00:00Z"}, {"advisory": "RHSA-2017:3018", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "httpd24-curl-0:7.47.1-4.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUS", "release_date": "2017-10-24T00:00:00Z"}, {"advisory": "RHSA-2017:3018", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "httpd24-httpd-0:2.4.27-8.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUS", "release_date": "2017-10-24T00:00:00Z"}, {"advisory": "RHSA-2017:3018", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "httpd24-mod_auth_kerb-0:5.4-33.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUS", "release_date": "2017-10-24T00:00:00Z"}, {"advisory": "RHSA-2017:3018", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "httpd24-nghttp2-0:1.7.1-6.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUS", "release_date": "2017-10-24T00:00:00Z"}, {"advisory": "RHSA-2017:3018", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "httpd24-0:1.1-18.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUS", "release_date": "2017-10-24T00:00:00Z"}, {"advisory": "RHSA-2017:3018", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "httpd24-curl-0:7.47.1-4.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUS", "release_date": "2017-10-24T00:00:00Z"}, {"advisory": "RHSA-2017:3018", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "httpd24-httpd-0:2.4.27-8.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUS", "release_date": "2017-10-24T00:00:00Z"}, {"advisory": "RHSA-2017:3018", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "httpd24-mod_auth_kerb-0:5.4-33.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUS", "release_date": "2017-10-24T00:00:00Z"}, {"advisory": "RHSA-2017:3018", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "httpd24-nghttp2-0:1.7.1-6.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUS", "release_date": "2017-10-24T00:00:00Z"}, {"advisory": "RHSA-2017:3475", "cpe": "cpe:/a:redhat:jboss_core_services:1", "package": "httpd", "product_name": "Text-Only JBCS", "release_date": "2017-12-15T00:00:00Z"}], "bugzilla": {"description": "httpd: Use-after-free by limiting unregistered HTTP method (Optionsbleed)", "id": "1490344", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1490344"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.9", "cvss3_scoring_vector": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N", "status": "verified"}, "cwe": "CWE-416", "details": ["Apache httpd allows remote attackers to read secret data from process memory if the Limit directive can be set in a user's .htaccess file, or if httpd.conf has certain misconfigurations, aka Optionsbleed. This affects the Apache HTTP Server through 2.2.34 and 2.4.x through 2.4.27. The attacker sends an unauthenticated OPTIONS HTTP request when attempting to read secret data. This is a use-after-free issue and thus secret data is not always sent, and the specific data depends on many factors including configuration. Exploitation with .htaccess can be blocked with a patch to the ap_limit_section function in server/core.c.", "A use-after-free flaw was found in the way httpd handled invalid and previously unregistered HTTP methods specified in the Limit directive used in an .htaccess file. A remote attacker could possibly use this flaw to disclose portions of the server memory, or cause httpd child process to crash."], "mitigation": {"lang": "en:us", "value": "This issue can be mitigated by configuring httpd to disallow the use of the \"Limit\" configuration directive in .htaccess files. The set of directives that can be used in .htaccess files is configured using the \"AllowOverride\" directive. Refer to Red Hat Bugzilla bug 1490344 for further details:\nhttps://bugzilla.redhat.com/show_bug.cgi?id=1490344#c18"}, "name": "CVE-2017-9798", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Will not fix", "package_name": "httpd", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_application_platform:5", "fix_state": "Not affected", "package_name": "httpd", "product_name": "Red Hat JBoss Enterprise Application Platform 5"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_web_server:1", "fix_state": "Under investigation", "package_name": "httpd", "product_name": "Red Hat JBoss Enterprise Web Server 1"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_web_server:3", "fix_state": "Will not fix", "package_name": "httpd", "product_name": "Red Hat JBoss Web Server 3"}, {"cpe": "cpe:/a:redhat:rhel_software_collections:2", "fix_state": "Affected", "package_name": "httpd24-httpd", "product_name": "Red Hat Software Collections"}], "public_date": "2017-09-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2017-9798\nhttps://nvd.nist.gov/vuln/detail/CVE-2017-9798\nhttps://blog.fuzzing-project.org/60-Optionsbleed-HTTP-OPTIONS-method-can-leak-Apaches-server-memory.html"], "statement": "This issue affects the versions of httpd as shipped with Red Hat Enterprise Linux 5, 6, and 7. This issue affects the versions of httpd24-httpd as shipped with Red Hat Software Collections. Product Security has rated this issue as having Moderate security impact.\nIn order to be vulnerable, .htaccess files need to contain an invalid or not globally registered HTTP method in a \"Limit\" directive.", "threat_severity": "Moderate"}

{}