#VU8605 Buffer overflow in UnRar - CVE-2017-12942

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Main Vulnerability Database Vulnerabilities #VU8605

#VU8605 Buffer overflow in UnRar - CVE-2017-12942

Published: September 25, 2017 / Updated: September 26, 2017


Vulnerability identifier: #VU8605
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2017-12942
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
UnRar
Software vendor:
RARLAB

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to boundary error when processing archives in in the Unpack::LongLZ function in libunrar.a in UnRAR before 5.5.7. A remote unauthenticated attacker can create a specially crafted archive, trick the victim into opening it an execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


Remediation

Update to version 5.5.7.

External links