Use After Free Affecting vim-default-editor package, versions <2:9.0.2153-1.amzn2023


Severity

Recommended
low

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.05% (21st percentile)

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  • Snyk IDSNYK-AMZN2023-VIMDEFAULTEDITOR-6147224
  • published9 Jan 2024
  • disclosed22 Nov 2023

Introduced: 22 Nov 2023

CVE-2023-48706  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 vim-default-editor to version 2:9.0.2153-1.amzn2023 or higher.
This issue was patched in ALAS2023-2024-469.

NVD Description

Note: Versions mentioned in the description apply only to the upstream vim-default-editor package and not the vim-default-editor package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 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