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CVE-2020-25725

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CVE-2020-25725

Published: Nov 21, 2020

Modified: Aug 4, 2024

PUBLISHED

CVSS v3.1

5.0

MEDIUM

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.

VendorProductVersions

Glyph & Cog

xpdf

affected
4.02

Weaknesses (CWE)

CWE-416

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

References

FEDORA-2021-4a437fe032
vendor-advisory
x_refsource_FEDORA
FEDORA-2021-013d9a30e0
vendor-advisory
x_refsource_FEDORA

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