Infinite loop in Libxml2 - CVE-2018-9251
Published: October 15, 2018
Vulnerability identifier: #VU15364
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2018-9251
CWE-ID: CWE-835
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Gnome Development Team
Affected software:
Libxml2
Libxml2
Detailed vulnerability description
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The vulnerability exists in the xz_decomp() function of the GNOME libxml2 library, as defined in the xzlib.c source code due to an infinite loop condition in the Lempel-Ziv-Markov (LZMA) decompression feature during the processing of XML files. A remote unauthenticated attacker can trick the victim into opening a specially crafted XML file that submits malicious input, trigger an LZMA_MEMLIMIT_ERROR condition and cause the application to crash.
How to mitigate CVE-2018-9251
Install update from vendor's website.