CVE-2016-4809

high-risk
Published 2016-09-21

The archive_read_format_cpio_read_header function in archive_read_support_format_cpio.c in libarchive before 3.2.1 allows remote attackers to cause a denial of service (application crash) via a CPIO archive with a large symlink.

Do I need to act?

~
2.5% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / LOW complexity

Affected Products (14)

Affected Vendors

Oracle Redhat Libarchive

References (18)

Third Party Advisory http://rhn.redhat.com/errata/RHSA-2016-1844.html
Third Party Advisory http://rhn.redhat.com/errata/RHSA-2016-1850.html
http://www.debian.org/security/2016/dsa-3657
Third Party Advisory http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.h...
Third Party Advisory http://www.securityfocus.com/bid/91813
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1347084
Issue Tracking https://github.com/libarchive/libarchive/commit/fd7e0c02
Issue Tracking https://github.com/libarchive/libarchive/issues/705
https://security.gentoo.org/glsa/201701-03
Third Party Advisory http://rhn.redhat.com/errata/RHSA-2016-1844.html
Third Party Advisory http://rhn.redhat.com/errata/RHSA-2016-1850.html
http://www.debian.org/security/2016/dsa-3657
Third Party Advisory http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.h...
Third Party Advisory http://www.securityfocus.com/bid/91813
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1347084
Issue Tracking https://github.com/libarchive/libarchive/commit/fd7e0c02
Issue Tracking https://github.com/libarchive/libarchive/issues/705
https://security.gentoo.org/glsa/201701-03
50
/ 100
high-risk
Severity 26/34 · High
Exploitability 6/34 · Minimal
Exposure 18/34 · Moderate