Integer overflow in Artifex jbig2dec - CVE-2017-7885

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Main Vulnerability Database Vulnerabilities #VU6702

Integer overflow in Artifex jbig2dec - CVE-2017-7885

Published: May 24, 2017 / Updated: August 30, 2017


Vulnerability identifier: #VU6702
CSH Severity: Low
CVSS v4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2017-7885
CWE-ID: CWE-190
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to obtain potentially sensitive information or cause DoS condition.

The weakness exists due to integer overflow in the jbig2_decode_symbol_dict function in jbig2_symbol_dict.c in libjbig2dec.a during operation on a crafted .jb2 file. A remote attacker can send a specially crafted .jb2 file, trigger heap-based buffer over-read and access arbitrary files from process memory or cause the application to crash.

Successful exploitation of the vulnerability may result in information disclosure or denial of service.

Affected software

Artifex jbig2dec
Gentoo Linux
Debian Linux
Fedora
Ubuntu
jbig2dec
mupdf
ghostscript

How to mitigate CVE-2017-7885

Install update from vendor's website.

jbig2dec - addressed in versions 0.12-4.el7, 0.12-4.fc25, 0.13-3.fc26
mupdf - addressed in versions 1.10a-6.fc25, 1.10a-6.fc26, 1.10a-7.fc25
ghostscript - addressed in versions 9.20-9.fc24, 9.20-9.fc25, 9.20-10.fc26

External References

Related Security Bulletins