CVE-2020-25725

State: Published
Severity: 5.0 Medium
Published: Nov 21, 2020
Updated: Aug 4, 2024
Reserved: Sep 16, 2020

Description

In Xpdf 4.02, SplashOutputDev::endType3Char(GfxState *state) SplashOutputDev.cc:3079 is trying to use the freed `t3GlyphStack->cache`, which causes an `heap-use-after-free` problem. The codes of a previous fix for nested Type 3 characters wasn't correctly handling the case where a Type 3 char referred to another char in the same Type 3 font.

Scores

CVSS	Score	Vector	Source
3.1	5.0 Medium	CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H	redhat

Weaknesses

CWE-416

Affected Products

Product	Versions
xpdfGlyph & Cog	4.02Affected

References

https://forum.xpdfreader.com/viewtopic.php?f=3&t=41915
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-25725
FEDORA-2021-4a437fe032vendor-advisory
FEDORA-2021-013d9a30e0vendor-advisory

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