Out-of-bounds Write Affecting stb package, versions <0_git20231012-r0


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.08% (35th percentile)

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  • Snyk IDSNYK-ALPINE321-STB-8489564
  • published6 Dec 2024
  • disclosed21 Oct 2023

Introduced: 21 Oct 2023

CVE-2023-45675  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Alpine:3.21 stb to version 0_git20231012-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream stb package and not the stb package as distributed by Alpine. See How to fix? for Alpine:3.21 relevant fixed versions and status.

stb_vorbis is a single file MIT licensed library for processing ogg vorbis files. A crafted file may trigger out of bounds write in f-&gt;vendor[len] = (char)&#39;\0&#39;;. The root cause is that if the len read in start_decoder is -1 and len + 1 becomes 0 when passed to setup_malloc. The setup_malloc behaves differently when f-&gt;alloc.alloc_buffer is pre-allocated. Instead of returning NULL as in malloc case it shifts the pre-allocated buffer by zero and returns the currently available memory block. This issue may lead to code execution.

CVSS Scores

version 3.1