PT-2017-2762 · Rarlab+2 · Unrar+2

Jakub Wilk · Published 2017-08-15 · Updated 2021-08-25 · CVE-2017-12940

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions UnRAR versions prior to 5.5.7

Description The issue is caused by an out-of-bounds read in the EncodeFileName::Decode call within the Archive::ReadHeader15 function of the libunrar.a library in UnRAR. This can be exploited by a remote attacker to cause the application to crash.

Recommendations For versions prior to 5.5.7, update to version 5.5.7 or later to resolve the issue. As a temporary workaround, consider restricting the use of the Archive::ReadHeader15 function until a patch is available.

Exploit

Fix

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

ALT-PU-2017-2147

BDU:2017-02011

CVE-2017-12940

MGASA-2017-0302

MGASA-2017-0304

SUSE-SU-2018:0862-1

SUSE-SU-2021:2834-1

Affected Products

Alt Linux

Suse

Unrar

References · 37

• 🔥 http://seclists.org/oss-sec/2017/q3/290 · Exploit
• https://advisories.mageia.org/MGASA-2017-0302.html · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2017-12940 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2021:2834-1 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2017-0304 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2017-0304.html · Security Note
• https://security.gentoo.org/glsa/201709-24 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2017-12940 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2018:0862-1 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se16-bulletin-20231214SE16 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2017-12940 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2017-0302 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-12940 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2017-12940 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2017-12940 · Vendor Advisory