Out-of-bounds write in MuPDF

1) Out-of-bounds write

EUVDB-ID: #VU47952

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-26519

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

Artifex MuPDF before 1.18.0 has a heap based buffer over-write when parsing JBIG2 files allowing attackers to cause a denial of service.

Mitigation

Install update from vendor's website.

Vulnerable software versions

MuPDF: 1.0 - 1.17.0 rc1

External links

http://git.ghostscript.com/?p=mupdf.git;a=commit;h=af1e390a2c7abceb32676ec684cd1dbb92907ce8
http://bugs.ghostscript.com/show_bug.cgi?id=702937
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SOF4PX2A5TGKKPMXINADSOJJ4H5UUMKK/
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WJMBKWVY7ZBIQV3EU5YHEFH5XWV4PABG/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.