CVE-2017-1000112 (GCVE-0-2017-1000112)

Vulnerability from cvelistv5 – Published: 2017-10-04 01:00 – Updated: 2024-08-05 21:53
VLAI
Summary
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.
Severity
No CVSS data available.
CWE
  • n/a
Assigner
References
URL Tags
http://seclists.org/oss-sec/2017/q3/277 mailing-listx_refsource_MLIST
https://access.redhat.com/errata/RHSA-2017:3200 vendor-advisoryx_refsource_REDHAT
http://www.securityfocus.com/bid/100262 vdb-entryx_refsource_BID
https://access.redhat.com/errata/RHSA-2017:2918 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2017:2931 vendor-advisoryx_refsource_REDHAT
http://www.debian.org/security/2017/dsa-3981 vendor-advisoryx_refsource_DEBIAN
https://github.com/xairy/kernel-exploits/tree/mas… x_refsource_MISC
http://www.securitytracker.com/id/1039162 vdb-entryx_refsource_SECTRACK
https://www.exploit-db.com/exploits/45147/ exploitx_refsource_EXPLOIT-DB
https://access.redhat.com/errata/RHSA-2017:2930 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2019:1932 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2019:1931 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2019:4159 vendor-advisoryx_refsource_REDHAT
Date Public
2017-10-03 00:00
Show details on NVD website
To clipboard 

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      "published": "2017-10-05T01:29:04.477",
      "references": "[{\"url\": \"http://seclists.org/oss-sec/2017/q3/277\", \"source\": \"cve@mitre.org\", \"tags\": [\"Mailing List\", \"Patch\", \"Third Party Advisory\"]}, {\"url\": \"http://www.debian.org/security/2017/dsa-3981\", \"source\": \"cve@mitre.org\", \"tags\": [\"Third Party Advisory\"]}, {\"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\", \"VDB Entry\"]}, {\"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\"]}, {\"url\": \"https://www.exploit-db.com/exploits/45147/\", \"source\": \"cve@mitre.org\", \"tags\": [\"Third Party Advisory\", \"VDB Entry\"]}, {\"url\": \"http://seclists.org/oss-sec/2017/q3/277\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Mailing List\", \"Patch\", \"Third Party Advisory\"]}, {\"url\": \"http://www.debian.org/security/2017/dsa-3981\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"http://www.securityfocus.com/bid/100262\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\", \"VDB Entry\"]}, {\"url\": \"http://www.securitytracker.com/id/1039162\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\", \"VDB Entry\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2017:2918\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2017:2930\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2017:2931\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2017:3200\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2019:1931\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2019:1932\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2019:4159\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://github.com/xairy/kernel-exploits/tree/master/CVE-2017-1000112\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://www.exploit-db.com/exploits/45147/\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\", \"VDB Entry\"]}]",
      "sourceIdentifier": "cve@mitre.org",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-362\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2017-1000112\",\"sourceIdentifier\":\"cve@mitre.org\",\"published\":\"2017-10-05T01:29:04.477\",\"lastModified\":\"2026-05-13T00:24:29.033\",\"vulnStatus\":\"Modified\",\"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-\u003elen 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-\u003elen - 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-\u003elen 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-\u003elen - 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.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.0,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.0,\"impactScore\":5.9}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:L/AC:M/Au:N/C:C/I:C/A:C\",\"baseScore\":6.9,\"accessVector\":\"LOCAL\",\"accessComplexity\":\"MEDIUM\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"COMPLETE\",\"integrityImpact\":\"COMPLETE\",\"availabilityImpact\":\"COMPLETE\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":3.4,\"impactScore\":10.0,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-362\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"2.6.15\",\"versionEndExcluding\":\"3.10.108\",\"matchCriteriaId\":\"C3FE348E-5745-49CF-B0F6-52AA3E4F3A42\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"3.11\",\"versionEndExcluding\":\"3.16.47\",\"matchCriteriaId\":\"1B863019-9BE4-4D3F-907A-B5BFDEEE975E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"3.17\",\"versionEndExcluding\":\"3.18.65\",\"matchCriteriaId\":\"15A3222E-681C-4561-B7DF-C1D36FE3773C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"3.19\",\"versionEndExcluding\":\"4.4.82\",\"matchCriteriaId\":\"BCC5E165-3BA3-42E8-A9B4-BAC5C9C90365\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.5\",\"versionEndExcluding\":\"4.9.43\",\"matchCriteriaId\":\"FE7B437E-2829-4956-BBB4-79F150CABB0C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.10\",\"versionEndExcluding\":\"4.12.7\",\"matchCriteriaId\":\"9186C944-947B-4F51-8956-925591EFF822\"}]}]}],\"references\":[{\"url\":\"http://seclists.org/oss-sec/2017/q3/277\",\"source\":\"cve@mitre.org\",\"tags\":[\"Mailing 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  }
}


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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.