Infinite loop in MuPDF - CVE-2018-5686

Vulnerability identifier: #VU12557

CSH Severity: Low

CVSS v4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

CVE-ID: CVE-2018-5686

CWE-ID: CWE-835

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to cause DoS condition on the traget system.

The weakness exists in the pdf_parse_array function in pdf/pdf-parse.c due to infinite loop because EOF is not considered. A remote attacker can trick the victim into opening a specially crafted pdf file and cause the service to crash.

MuPDF
Arch Linux
Debian Linux
Fedora
mupdf (Alpine package)
mupdf

Install update from vendor's website.

mupdf (Alpine package) - update to 1.13.0-r0
mupdf - addressed in versions 1.12.0-2.fc26, 1.12.0-2.fc27

• https://bugs.ghostscript.com/show_bug.cgi?id=698860

• Arch Linux update for mupdf
• Arch Linux update for mupdf-gl
• Arch Linux update for libmupdf
• Arch Linux update for mupdf-tools
• Arch Linux update for llpp
• Arch Linux update for zathura-pdf-mupdf
• Debian update for mupdf
• Infinite loop in mupdf (Alpine package)
• Fedora 27 update for mupdf
• Fedora 26 update for mupdf