Use After Free Affecting vim-common package, versions *


Severity

Recommended
low

Based on Red Hat Enterprise Linux security rating

    Threat Intelligence

    EPSS
    0.05% (20th percentile)

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  • Snyk ID SNYK-RHEL9-VIMCOMMON-6083364
  • published 23 Nov 2023
  • disclosed 22 Nov 2023

How to fix?

There is no fixed version for RHEL:9 vim-common.

NVD Description

Note: Versions mentioned in the description apply only to the upstream vim-common package and not the vim-common package as distributed by RHEL. See How to fix? for RHEL:9 relevant fixed versions and status.

Vim is a UNIX editor that, prior to version 9.0.2121, has a heap-use-after-free vulnerability. When executing a :s command for the very first time and using a sub-replace-special atom inside the substitution part, it is possible that the recursive :s call causes free-ing of memory which may later then be accessed by the initial :s command. The user must intentionally execute the payload and the whole process is a bit tricky to do since it seems to work only reliably for the very first :s command. It may also cause a crash of Vim. Version 9.0.2121 contains a fix for this issue.

CVSS Scores

version 3.1
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NVD

4.7 medium
  • Attack Vector (AV)
    Local
  • Attack Complexity (AC)
    High
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    Required
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    None
  • Integrity (I)
    None
  • Availability (A)
    High
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Red Hat

4.7 medium
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SUSE

3.6 low