PT-2020-5166 · Libarchive+2 · Libarchive+2

Antekone · Published 2020-02-01 · Updated 2022-01-01 · CVE-2020-9308

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 libarchive versions prior to 3.4.2

Description The issue is related to errors in input data validation in the archive read support format rar5.c file of the libarchive library. This can lead to a denial of service when handling RAR5 files with invalid or corrupted headers. A remote attacker can exploit this issue by providing specially crafted RAR5 files.

Recommendations For versions prior to 3.4.2, update to version 3.4.2 or later to resolve the issue. As a temporary workaround, consider restricting the handling of RAR5 files until the update is applied.

Fix

Memory Corruption

RCE

Weakness Enumeration

CWE-787

CWE-20

Related Identifiers

ALT-PU-2020-2870

ALT-PU-2020-2874

BDU:2020-05777

CVE-2020-9308

MGASA-2020-0127

USN-4293-1

Affected Products

Alt Linux

Ubuntu

Libarchive

References · 30

• https://github.com/libarchive/libarchive/pull/1326 · Patch
• https://github.com/libarchive/libarchive/pull/1326/commits/94821008d6eea81e315c5881cdf739202961040a · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2020-9308 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2020-9308 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-9308 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/[e-mail]/message/J76F7VU7HC3GBKG5SAKTRBOFOI3RGO6M · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2020-9308 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-19221 · Vendor Advisory
• https://usn.ubuntu.com/4293-1 · Vendor Advisory
• https://osv.dev/vulnerability/USN-4293-1 · Vendor Advisory
• https://osv.dev/vulnerability/ALPINE-CVE-2020-9308 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2020-0127 · Vendor Advisory
• https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=20459 · Patch
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/J76F7VU7HC3GBKG5SAKTRBOFOI3RGO6M · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/[e-mail]/message/6OTE7GWASH2ZOVG5H3HEN5PR6B3KF7JB · Vendor Advisory