Integer overflow in Libarchive
CVE-2015-8931
Multiple integer overflows in the (1) get_time_t_max and (2) get_time_t_min functions in archive_read_support_format_mtree.c in libarchive before 3.2.0 allow remote attackers to have unspecified impact via a crafted mtree file, which triggers undefined behavior.
Vulnerability class: Integer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.021 (81.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 81st percentile — 81.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.021 · newest: 0.021 · change: 0.000
Affected products
- Libarchive
- Canonical Ubuntu Linux — versions 12.04, 14.04, 15.10
- Debian Linux — versions 7.0, 8.0
- SUSE Linux Enterprise Desktop — versions 12
- SUSE Linux Enterprise Server — versions 12
- SUSE Linux Enterprise Software Development Kit — versions 12
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.ubuntu.com/usn/USN-3033-1 (vendor-advisory, Third Party Advisory)
- rhn.redhat.com/errata/RHSA-2016-1844.html (vendor-advisory)
- blog.fuzzing-project.org/47-Many-invalid-memory-access-issues-in-libarchive.html (Third Party Advisory)
- www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
- lists.opensuse.org/opensuse-security-announce/2016-07/msg00025.html (vendor-advisory, Third Party Advisory)
- github.com/libarchive/libarchive/issues/539 (Exploit, Third Party Advisory, Issue Tracking)
- www.openwall.com/lists/oss-security/2016/06/17/2 (mailing-list, Mailing List, Third Party Advisory)
- security.gentoo.org/glsa/201701-03 (vendor-advisory)
- security-tracker.debian.org/tracker/CVE-2015-8931 (Third Party Advisory, Issue Tracking)
- www.openwall.com/lists/oss-security/2016/06/17/5 (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2015-8931?
- CVE-2015-8931 is a high-severity vulnerability in Libarchive, classified under Integer Overflow or Wraparound. CVSS score: 7.8/10. Published 2016-09-20.
- How severe is CVE-2015-8931?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2015-8931 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.