Out-of-bounds read in UnRar - CVE-2017-12941

 

Out-of-bounds read in UnRar - CVE-2017-12941

Published: September 26, 2017


Vulnerability identifier: #VU8604
CSH Severity: Low
CVSS v4.0: 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:Clear
CVE-ID: CVE-2017-12941
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: RARLAB
Affected software:
UnRar

Detailed vulnerability description

The vulnerability allows a remote attacker to crash the affected application.

The vulnerability exists due to out-of-bounds read in libunrar.a in UnRAR before 5.5.7 in the Unpack::Unpack20 function. A remote attacker can create a specially crafted archive and crash the affected application.


How to mitigate CVE-2017-12941

Update to version 5.5.7.

Sources