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CVE-2017-18344 (GCVE-0-2017-18344)

Vulnerability from cvelistv5 – Published: 2018-07-26 19:00 – Updated: 2024-08-05 21:20
VLAI
Summary
The timer_create syscall implementation in kernel/time/posix-timers.c in the Linux kernel before 4.14.8 doesn't properly validate the sigevent->sigev_notify field, which leads to out-of-bounds access in the show_timer function (called when /proc/$PID/timers is read). This allows userspace applications to read arbitrary kernel memory (on a kernel built with CONFIG_POSIX_TIMERS and CONFIG_CHECKPOINT_RESTORE).
Severity
5.5 (Medium)
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CWE
  • n/a
Assigner
References
URL Tags
https://access.redhat.com/errata/RHSA-2018:3540 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2018:3083 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2018:3591 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2018:3459 vendor-advisoryx_refsource_REDHAT
http://www.securitytracker.com/id/1041414 vdb-entryx_refsource_SECTRACK
https://cdn.kernel.org/pub/linux/kernel/v4.x/Chan… x_refsource_MISC
https://access.redhat.com/errata/RHSA-2018:3590 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2018:2948 vendor-advisoryx_refsource_REDHAT
https://github.com/torvalds/linux/commit/cef31d9a… x_refsource_MISC
https://usn.ubuntu.com/3742-2/ vendor-advisoryx_refsource_UBUNTU
http://www.securityfocus.com/bid/104909 vdb-entryx_refsource_BID
https://usn.ubuntu.com/3742-1/ vendor-advisoryx_refsource_UBUNTU
https://access.redhat.com/errata/RHSA-2018:3586 vendor-advisoryx_refsource_REDHAT
https://www.exploit-db.com/exploits/45175/ exploitx_refsource_EXPLOIT-DB
https://access.redhat.com/errata/RHSA-2018:3096 vendor-advisoryx_refsource_REDHAT
Date Public
2018-07-26 00:00
Show details on NVD website
To clipboard 

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}



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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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.