CVE-2017-1000112

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "http://www.securitytracker.com/id/1039162", "name": "1039162", "tags": ["Third Party Advisory", "VDB Entry"], "refsource": "SECTRACK"}, {"url": "http://www.securityfocus.com/bid/100262", "name": "100262", "tags": ["Third Party Advisory", "VDB Entry"], "refsource": "BID"}, {"url": "http://seclists.org/oss-sec/2017/q3/277", "name": "[oss-security] 20170810 Linux kernel: CVE-2017-1000112: Exploitable memory corruption due to UFO to non-UFO path switch", "tags": ["Mailing List", "Patch", "Third Party Advisory"], "refsource": "MLIST"}, {"url": "http://www.debian.org/security/2017/dsa-3981", "name": "DSA-3981", "tags": [], "refsource": "DEBIAN"}, {"url": "https://access.redhat.com/errata/RHSA-2017:3200", "name": "RHSA-2017:3200", "tags": [], "refsource": "REDHAT"}, {"url": "https://access.redhat.com/errata/RHSA-2017:2931", "name": "RHSA-2017:2931", "tags": [], "refsource": "REDHAT"}, {"url": "https://access.redhat.com/errata/RHSA-2017:2930", "name": "RHSA-2017:2930", "tags": [], "refsource": "REDHAT"}, {"url": "https://access.redhat.com/errata/RHSA-2017:2918", "name": "RHSA-2017:2918", "tags": [], "refsource": "REDHAT"}, {"url": "https://github.com/xairy/kernel-exploits/tree/master/CVE-2017-1000112", "name": "https://github.com/xairy/kernel-exploits/tree/master/CVE-2017-1000112", "tags": [], "refsource": "MISC"}, {"url": "https://www.exploit-db.com/exploits/45147/", "name": "45147", "tags": [], "refsource": "EXPLOIT-DB"}, {"url": "https://access.redhat.com/errata/RHSA-2019:1931", "name": "RHSA-2019:1931", "tags": [], "refsource": "REDHAT"}, {"url": "https://access.redhat.com/errata/RHSA-2019:1932", "name": "RHSA-2019:1932", "tags": [], "refsource": "REDHAT"}, {"url": "https://access.redhat.com/errata/RHSA-2019:4159", "name": "RHSA-2019:4159", "tags": [], "refsource": "REDHAT"}]}, "data_format": "MITRE", "description": {"description_data": [{"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."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-362"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2017-1000112", "ASSIGNER": "cve@mitre.org"}}, "impact": {"baseMetricV2": {"cvssV2": {"version": "2.0", "baseScore": 6.9, "accessVector": "LOCAL", "vectorString": "AV:L/AC:M/Au:N/C:C/I:C/A:C", "authentication": "NONE", "integrityImpact": "COMPLETE", "accessComplexity": "MEDIUM", "availabilityImpact": "COMPLETE", "confidentialityImpact": "COMPLETE"}, "severity": "MEDIUM", "impactScore": 10.0, "obtainAllPrivilege": false, "exploitabilityScore": 3.4, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}, "baseMetricV3": {"cvssV3": {"scope": "UNCHANGED", "version": "3.0", "baseScore": 7.0, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.0}}, "publishedDate": "2017-10-05T01:29Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndIncluding": "4.13.9"}]}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2018-08-06T01:29Z"}