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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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\"]}]}}"
  }
}


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Tags
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.