905310 – (CVE-2023-25193) <media-libs/harfbuzz-7.1.0: DoS via excessive algorithmic complexity

Bug 905310 (CVE-2023-25193) - <media-libs/harfbuzz-7.1.0: DoS via excessive algorithmic complexity

Summary: <media-libs/harfbuzz-7.1.0: DoS via excessive algorithmic complexity

Status:	CONFIRMED

Alias:	CVE-2023-25193

Product:	Gentoo Security
Classification:	Unclassified
Component:	Vulnerabilities (show other bugs)
Hardware:	All Linux

Importance:	Normal normal (vote)
Assignee:	Gentoo Security

URL:
Whiteboard:	A3 [stable]
Keywords:

Depends on:	905701 906224
Blocks:
	Show dependency tree

Reported:	2023-04-29 18:47 UTC by John Helmert III
Modified:	2023-05-31 17:51 UTC (History)
CC List:	1 user (show)

See Also:
Package list:
Runtime testing required:	---

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Description John Helmert III archtester

2023-04-29 18:47:36 UTC

CVE-2023-25193:

hb-ot-layout-gsubgpos.hh in HarfBuzz through 6.0.0 allows attackers to trigger O(n^2) growth via consecutive marks during the process of looking back for base glyphs when attaching marks.

Patch: https://github.com/harfbuzz/harfbuzz/commit/8708b9e081192786c027bb7f5f23d76dbe5c19e8