CVE-2020-9308

HIGH 8.8CVE-2020-9308 · Published 20/02/2020 · updated 17/06/2026

In short

CVE-2020-9308 is a HIGH (CVSS 8.8) vulnerability affecting libarchive (libarchive).
Chance of exploitation in the next 30 days (EPSS): 2.3%, higher than 82.9% of all vulnerabilities.
Fix: update to 3.4.2 or later.

Package	Affected versions	Patched versions
libarchive libarchive	`≥ 3.4.0, < 3.4.2`	`3.4.2`

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.

References

bugs.chromium.org/p/oss-fuzz/issues/detail · Issue Tracking
libarchive/libarchive#1326 · Patch
libarchive/libarchive#1326 · Patch
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6OTE7GWASH2ZOVG5H3HEN5PR6B3KF7JB
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/J76F7VU7HC3GBKG5SAKTRBOFOI3RGO6M
security.gentoo.org/glsa/202003-28 · Third Party Advisory
usn.ubuntu.com/4293-1 · Third Party Advisory

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Package

Affected versions

Patched versions

libarchive

≥ 3.4.0, < 3.4.2

3.4.2

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