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Linux 7.5 EUS", "release_date": "2019-02-05T00:00:00Z"}, {"advisory": "RHSA-2019:0275", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-haproxy18-haproxy-0:1.8.4-4.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS", "release_date": "2019-02-05T00:00:00Z"}], "bugzilla": {"description": "haproxy: Mishandling of priority flag in short HEADERS frame by HTTP/2 decoder allows for crash", "id": "1663060", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1663060"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "verified"}, "cwe": "CWE-125", "details": ["An out-of-bounds read issue was discovered in the HTTP/2 protocol decoder in HAProxy 1.8.x and 1.9.x through 1.9.0 which can result in a crash. The processing of the PRIORITY flag in a HEADERS frame requires 5 extra bytes, and while these bytes are skipped, the total frame length was not re-checked to make sure they were present in the frame.", "A flaw was found in HAProxy, versions before 1.8.17 and 1.9.1. Mishandling occurs when a priority flag is set on too short HEADERS frame in the HTTP/2 decoder, allowing an out-of-bounds read and a subsequent crash to occur. A remote attacker can exploit this flaw to cause a denial of service. Those who do not use HTTP/2 are unaffected."], "mitigation": {"lang": "en:us", "value": "HTTP/2 support is disabled by default on OpenShift Container Platform 3.11. To mitigate this vulnerability keep it disabled. You can verify if HTTP/2 support is enabled by following the instructions in the upstream pull request, [1].\n[1] https://github.com/openshift/origin/pull/19968"}, "name": "CVE-2018-20615", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "haproxy", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "haproxy", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "haproxy", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/a:redhat:openshift:3.7", "fix_state": "Not affected", "package_name": "haproxy", "product_name": "Red Hat OpenShift Container Platform 3.7"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "haproxy", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openstack:12", "fix_state": "Out of support scope", "impact": "moderate", "package_name": "rhosp12/openstack-haproxy", "product_name": "Red Hat OpenStack Platform 12 (Pike)"}, {"cpe": "cpe:/a:redhat:openstack:13", "fix_state": "Not affected", "impact": "moderate", "package_name": "rhosp13/openstack-haproxy", "product_name": "Red Hat OpenStack Platform 13 (Queens)"}, {"cpe": "cpe:/a:redhat:openstack:14", "fix_state": "Not affected", "impact": "moderate", "package_name": "openstack-haproxy-container", "product_name": "Red Hat OpenStack Platform 14 (Rocky)"}], "public_date": "2019-01-08T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2018-20615\nhttps://nvd.nist.gov/vuln/detail/CVE-2018-20615"], "statement": "HTTP/2 support was added to haproxy in version 1.8, therefore OpenShift Container Platform (OCP) 3.7 and earlier are unaffected by this flaw, see [1]. OCP 3.11 added a configuration option to ose-haproxy-router that made enabling HTTP/2 support easy, [2]. Prior to that, in versions OCP 3.9 and 3.10, an administrator had to customize the haproxy router configuration to add HTTP/2 support, [3]. OCP 3.9, and 3.10 are rated as moderate because HTTP/2 support was not a standard configuration option, and therefore unlikely to be enabled.\nVersions of haproxy included in Red Hat Enterprise Linux 6 and 7, excluding rh-haproxy18-haproxy in Red Hat Software Collections, are unaffected as they package versions of haproxy before 1.7.\n[1] http://www.haproxy.org/news.html\n[2] https://github.com/openshift/origin/pull/19968\n[3] https://docs.openshift.com/container-platform/3.10/install_config/router/customized_haproxy_router.html", "threat_severity": "Important", "upstream_fix": "haproxy 1.8.17, haproxy 1.9.1"}