Out-of-bounds read in Libav - CVE-2017-16803

 

Out-of-bounds read in Libav - CVE-2017-16803

Published: February 20, 2018


Vulnerability identifier: #VU10663
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2017-16803
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: Libav
Affected software:
Libav

Detailed vulnerability description

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

The weakness exists in the smacker_decode_tree function in libavcodec/smacker.c due to improper restrictions of tree recursion. A remote attacker can supply specially crafted Smacker stream, trigger bitstream.c:build_table() out-of-bounds read and cause the application to crash.

How to mitigate CVE-2017-16803

Update to the latest version.

Sources