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.

Related CPE's

a

xpdfreader

xpdf

4.02

Vulnerable

o

fedoraproject

fedora

2

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

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4ZUU5QG6SSVRTKZTR3A72LDRVZETEI63/

Mailing ListThird Party Advisory

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VLOYVJSM54IL6I5RY4QTJGRS7PIEG44X/

Mailing ListThird Party Advisory

Weaknesses

[email protected]

Primary
CWE-416

[email protected]

Secondary
CWE-416

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

[email protected]

Vulnerability status

Analyzed

Published

2020-11-21T06:15:12.240

4 years ago

Last modified

2023-12-13T21:27:39.883

1 year ago