PT-2017-4172 · Rarlab+1 · Unrar+1

Published 2017-11-22 · Updated 2021-08-25 · CVE-2017-20006

Positive Technologies (AI Summary)

CVSS v2.0

9.3

High

Base vector

AV:N/AC:M/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions UnRAR versions 5.6.1.2 through 5.6.1.3

Description The issue is related to a heap-based buffer overflow in the Unpack::CopyString function, which is called from Unpack::Unpack5 and CmdExtract::ExtractCurrentFile. This can be exploited by a remote attacker to access confidential data, compromise data integrity, and cause a denial of service.

Recommendations For UnRAR versions 5.6.1.2 and 5.6.1.3, consider disabling the Unpack::CopyString function as a temporary workaround until a patch is available. Restrict access to the UnRAR unpacking functionality to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

BDU:2022-02058

CVE-2017-20006

SUSE-SU-2021:2834-1

Affected Products

Suse

Unrar

References · 23

• 🔥 https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=4373 · Exploit
• https://github.com/aawc/unrar/commit/0ff832d31470471803b175cfff4e40c1b08ee779 · Patch
• https://osv.dev/vulnerability/CVE-2017-20006 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2017-20006 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2017-20006 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se16-bulletin-20231214SE16 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-20006 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2017-20006 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2017-20006 · Vendor Advisory
• https://bdu.fstec.ru/vul/2022-02058 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2017-20006 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2021:2834-1 · Vendor Advisory
• https://github.com/google/oss-fuzz-vulns/blob/main/vulns/unrar/OSV-2017-104.yaml · Note
• https://suse.com/security/cve/CVE-2017-12942 · Note
• https://bugzilla.suse.com/1046882 · Note