Use After Free Vulnerability in MuPDF Library by Artifex Software
CVE-2020-16600

7.8HIGH

Key Information:

Vendor
Artifex
Status
MuPDF
Vendor
CVE Published:
9 December 2020

Summary

A vulnerability in the MuPDF library causes a Use After Free condition when processing a series of pages with varying pixmap dimensions. Specifically, when a valid page is followed by a page that presents invalid dimensions, the variable 'bander' erroneously points to a previously freed memory block. This can lead to potential exploitation through the manipulation of input files that trigger this flaw, allowing attackers to execute arbitrary code or lead to application instability.

References

https://bugs.ghostscript.com/show_bug.cgi?id=702253
x_refsource_MISC
http://git.ghostscript.com/?p=mupdf.git%3Bh=96751b25462f8...
x_refsource_MISC

CVSS V3.1

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.