Integer overflow in Libarchive
CVE-2015-8933
Integer overflow in the archive_read_format_tar_skip function in archive_read_support_format_tar.c in libarchive before 3.2.0 allows remote attackers to cause a denial of service (crash) via a crafted tar file.
Vulnerability class: Integer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.020 (80.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 80.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.020 · newest: 0.020 · change: 0.000
Affected products
- Libarchive
- Canonical Ubuntu Linux — versions 12.04, 14.04, 15.10
- 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.securityfocus.com/bid/91421 (vdb-entry)
- www.ubuntu.com/usn/USN-3033-1 (vendor-advisory, Third Party Advisory)
- blog.fuzzing-project.org/47-Many-invalid-memory-access-issues-in-libarchive.html (Third Party Advisory)
- github.com/libarchive/libarchive/issues/548 (Exploit, Patch, Third Party Advisory, Issue Tracking)
- lists.opensuse.org/opensuse-security-announce/2016-07/msg00025.html (vendor-advisory, Third Party Advisory)
- 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)
- www.openwall.com/lists/oss-security/2016/06/17/5 (mailing-list, Mailing List, Third Party Advisory)
- www.debian.org/security/2016/dsa-3657 (vendor-advisory)
Frequently asked questions
- What is CVE-2015-8933?
- CVE-2015-8933 is a medium-severity vulnerability in Libarchive, classified under Integer Overflow or Wraparound. CVSS score: 5.5/10. Published 2016-09-20.
- How severe is CVE-2015-8933?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2015-8933 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.