#VU36339 NULL pointer dereference in MuPDF - CVE-2018-19882

Vulnerability identifier: #VU36339

Vulnerability risk: Medium

CVSSv4.0: 4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2018-19882

CWE-ID: CWE-476

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
MuPDF
Client/Desktop applications / Multimedia software

Vendor: Artifex Software, Inc.

Description

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

The vulnerability exists due to a NULL pointer dereference error. A remote attacker can trigger denial of service conditions via a crafted svg file, as demonstrated by mupdf-gl.

Mitigation
Install update from vendor's website.

Vulnerable software versions

MuPDF: 1.14.0

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External links
https://bugs.ghostscript.com/show_bug.cgi?id=700342
https://github.com/TeamSeri0us/pocs/tree/master/mupdf/20181203
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CNJNEX5EW6YH5OARXXSSXW4HHC5PIBSY/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SEK2EHVNREJ7XZMFF2MXRWKIF4IBHPNE/

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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