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.
References
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-25725
ExploitIssue TrackingThird Party Advisory
https://forum.xpdfreader.com/viewtopic.php?f=3&t=41915
ExploitVendor Advisory
CVSS impact metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
5.5 · Medium
CVSS V3.1
CVSS V3.0
CVSS V2.0
Information
Source identifier
Vulnerability status
Analyzed
Published
2020-11-21T06:15:12.240
4 years agoLast modified
2023-12-13T21:27:39.883
1 year ago