CVE-2020-9308

libarchive: attempts to unpack a RAR5 file with an invalid or corrupted header leads to a SIGSEGV

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Severity

Moderate

Red Hat Product Security

8.8

CVSS 3.1

Review impact separately from score.

Published · February 2, 2020

Updated · November 22, 2025

Description

archive_read_support_format_rar5.c in libarchive before 3.4.2 attempts to unpack a RAR5 file with an invalid or corrupted header (such as a header size of zero), leading to a SIGSEGV or possibly unspecified other impact.

Statement

This issue did not affect the versions of libarchive as shipped with Red Hat Enterprise Linux 6, 7, and 8 as they did not include support for RAR 5 archives.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 8.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CWE-20 · Improper Input Validation