CVE-2020-25725CWE-416

In Xpdf 4.02, SplashOutputDev::endType3Char(GfxState *state) SplashOutputDev.cc:3079 is trying to use the freed `t3GlyphStack->cache`, which causes an…

Medium · published November 21, 2020

CVSS v3.1
5.0
EPSS
1%
Percentile
62.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.0 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.01005 · 62.6th percentile
Weakness
CWE-416 · Use After Free
Published
2020-11-21T05:29Z
EPSS history
Timeline
  • 21 NOV 05:29Z
    In Xpdf 4.02, SplashOutputDev::endType3Char(GfxState *state) SplashOutputDev.cc:3079 is trying to use the freed `t3GlyphStack->cache`, which causes an…
    cvelistv5