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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "C3FE348E-5745-49CF-B0F6-52AA3E4F3A42", "versionEndExcluding": "3.10.108", "versionStartIncluding": "2.6.15", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "1B863019-9BE4-4D3F-907A-B5BFDEEE975E", "versionEndExcluding": "3.16.47", "versionStartIncluding": "3.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "15A3222E-681C-4561-B7DF-C1D36FE3773C", "versionEndExcluding": "3.18.65", "versionStartIncluding": "3.17", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "BCC5E165-3BA3-42E8-A9B4-BAC5C9C90365", "versionEndExcluding": "4.4.82", "versionStartIncluding": "3.19", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "FE7B437E-2829-4956-BBB4-79F150CABB0C", "versionEndExcluding": "4.9.43", "versionStartIncluding": "4.5", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "9186C944-947B-4F51-8956-925591EFF822", "versionEndExcluding": "4.12.7", "versionStartIncluding": "4.10", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Linux kernel: Exploitable memory corruption due to UFO to non-UFO path switch. When building a UFO packet with MSG_MORE __ip_append_data() calls ip_ufo_append_data() to append. However in between two send() calls, the append path can be switched from UFO to non-UFO one, which leads to a memory corruption. In case UFO packet lengths exceeds MTU, copy = maxfraglen - skb->len becomes negative on the non-UFO path and the branch to allocate new skb is taken. This triggers fragmentation and computation of fraggap = skb_prev->len - maxfraglen. Fraggap can exceed MTU, causing copy = datalen - transhdrlen - fraggap to become negative. Subsequently skb_copy_and_csum_bits() writes out-of-bounds. A similar issue is present in IPv6 code. The bug was introduced in e89e9cf539a2 (\"[IPv4/IPv6]: UFO Scatter-gather approach\") on Oct 18 2005."}, {"lang": "es", "value": "Linux kernel: Existe una corrupci\u00f3n de memoria explotable debida al cambio de ruta de UFO a no UFO. Al crear un paquete UFO con MSG_MORE, __ip_append_data() llama a ip_ufo_append_data() para que se anexe. Sin embargo, entre dos llamadas send(), la ruta anexa puede cambiarse de UFO a no UFO, lo que lleva a una corrupci\u00f3n de memoria. Si la longitud del paquete UFO sobrepasa el MTU, copy = maxfraglen - skb->len se convierte en negativo en la ruta no UFO y se toma una rama para asignar un nuevo skb. Esto desencadena la fragmentaci\u00f3n y el c\u00e1lculo de fraggap = skb_prev->len - maxfraglen. fraggap puede exceder el MTU, lo que provoca que copy = datalen - transhdrlen - fraggap se vuelva negativo. En consecuencia, skb_copy_and_csum_bits() escribe fuera de l\u00edmites. Existe un problema similar en el c\u00f3digo IPv6. Este error fue introducido en e89e9cf539a2 (\"[IPv4/IPv6]: UFO Scatter-gather approach\") el 18 de octubre de 2005."}], "id": "CVE-2017-1000112", "lastModified": "2023-06-07T12:46:19.047", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 6.9, "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "vectorString": "AV:L/AC:M/Au:N/C:C/I:C/A:C", "version": "2.0"}, "exploitabilityScore": 3.4, "impactScore": 10.0, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.0, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.0, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2017-10-05T01:29:04.477", "references": [{"source": "cve@mitre.org", "tags": ["Mailing List", "Patch", "Third Party Advisory"], "url": "http://seclists.org/oss-sec/2017/q3/277"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "http://www.debian.org/security/2017/dsa-3981"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securityfocus.com/bid/100262"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securitytracker.com/id/1039162"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://access.redhat.com/errata/RHSA-2017:2918"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://access.redhat.com/errata/RHSA-2017:2930"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://access.redhat.com/errata/RHSA-2017:2931"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://access.redhat.com/errata/RHSA-2017:3200"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://access.redhat.com/errata/RHSA-2019:1931"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://access.redhat.com/errata/RHSA-2019:1932"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://access.redhat.com/errata/RHSA-2019:4159"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://github.com/xairy/kernel-exploits/tree/master/CVE-2017-1000112"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://www.exploit-db.com/exploits/45147/"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-362"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"acknowledgement": "Red Hat would like to thank Andrey Konovalov for reporting this issue.", "affected_release": [{"advisory": "RHSA-2019:1932", "cpe": "cpe:/o:redhat:rhel_aus:5.9", "package": "kernel-0:2.6.18-348.44.1.el5", "product_name": "Red Hat Enterprise Linux 5.9 Long Life", "release_date": "2019-07-29T00:00:00Z"}, {"advisory": "RHSA-2019:1931", "cpe": "cpe:/o:redhat:rhel_els:5", "package": "kernel-0:2.6.18-438.el5", "product_name": "Red Hat Enterprise Linux 5 Extended Lifecycle Support", "release_date": "2019-07-29T00:00:00Z"}, {"advisory": "RHSA-2017:3200", "cpe": "cpe:/o:redhat:enterprise_linux:6", "package": "kernel-0:2.6.32-696.16.1.el6", "product_name": "Red Hat Enterprise Linux 6", "release_date": "2017-11-14T00:00:00Z"}, {"advisory": "RHSA-2017:2931", "cpe": "cpe:/a:redhat:rhel_extras_rt:7", "package": "kernel-rt-0:3.10.0-693.5.2.rt56.626.el7", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2017-10-19T00:00:00Z"}, {"advisory": "RHSA-2017:2930", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "kernel-0:3.10.0-693.5.2.el7", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2017-10-19T00:00:00Z"}, {"advisory": "RHSA-2019:4159", "cpe": "cpe:/o:redhat:rhel_aus:7.3", "package": "kernel-0:3.10.0-514.71.1.el7", "product_name": "Red Hat Enterprise Linux 7.3 Advanced Update Support", "release_date": "2019-12-10T00:00:00Z"}, {"advisory": "RHSA-2019:4159", "cpe": "cpe:/o:redhat:rhel_tus:7.3", "package": "kernel-0:3.10.0-514.71.1.el7", "product_name": "Red Hat Enterprise Linux 7.3 Telco Extended Update Support", "release_date": "2019-12-10T00:00:00Z"}, {"advisory": "RHSA-2019:4159", "cpe": "cpe:/o:redhat:rhel_e4s:7.3", "package": "kernel-0:3.10.0-514.71.1.el7", "product_name": "Red Hat Enterprise Linux 7.3 Update Services for SAP Solutions", "release_date": "2019-12-10T00:00:00Z"}, {"advisory": "RHSA-2017:2918", "cpe": "cpe:/a:redhat:enterprise_mrg:2:server:el6", "package": "kernel-rt-1:3.10.0-693.5.2.rt56.592.el6rt", "product_name": "Red Hat Enterprise MRG 2", "release_date": "2017-10-19T00:00:00Z"}], "bugzilla": {"description": "kernel: Exploitable memory corruption due to UFO to non-UFO path switch", "id": "1479307", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1479307"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "verified"}, "cwe": "CWE-122", "details": ["Linux kernel: Exploitable memory corruption due to UFO to non-UFO path switch. When building a UFO packet with MSG_MORE __ip_append_data() calls ip_ufo_append_data() to append. However in between two send() calls, the append path can be switched from UFO to non-UFO one, which leads to a memory corruption. In case UFO packet lengths exceeds MTU, copy = maxfraglen - skb->len becomes negative on the non-UFO path and the branch to allocate new skb is taken. This triggers fragmentation and computation of fraggap = skb_prev->len - maxfraglen. Fraggap can exceed MTU, causing copy = datalen - transhdrlen - fraggap to become negative. Subsequently skb_copy_and_csum_bits() writes out-of-bounds. A similar issue is present in IPv6 code. The bug was introduced in e89e9cf539a2 (\"[IPv4/IPv6]: UFO Scatter-gather approach\") on Oct 18 2005.", "An exploitable memory corruption flaw was found in the Linux kernel. The append path can be erroneously switched from UFO to non-UFO in ip_ufo_append_data() when building an UFO packet with MSG_MORE option. If unprivileged user namespaces are available, this flaw can be exploited to gain root privileges."], "name": "CVE-2017-1000112", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "kernel-alt", "product_name": "Red Hat Enterprise Linux 7"}], "public_date": "2017-08-10T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2017-1000112\nhttps://nvd.nist.gov/vuln/detail/CVE-2017-1000112"], "statement": "This issue affects the Linux kernel packages as shipped with Red Hat\nEnterprise Linux 5,6, 7 and MRG-2.\nFuture Linux kernel updates for the respective releases may address this issue.", "threat_severity": "Important"}