Out-of-bounds Read in Libarchive
CVE-2017-14166
libarchive 3.3.2 allows remote attackers to cause a denial of service (xml_data heap-based buffer over-read and application crash) via a crafted xar archive, related to the mishandling of empty strings in the atol8 function in archive_read_support_format_xar.c.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.028 (85.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 85.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.028 · newest: 0.028 · change: 0.000
Affected products
- Libarchive — versions 3.3.2
- Canonical Ubuntu Linux — versions 14.04, 16.04
- Debian Linux — versions 8.0, 9.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- blogs.gentoo.org/ago/2017/09/06/libarchive-heap-based-buffer-overflow-in-xml_da… (Patch, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2018/11/msg00037.html (mailing-list, Mailing List, Third Party Advisory)
- www.debian.org/security/2018/dsa-4360 (vendor-advisory, Third Party Advisory)
- github.com/libarchive/libarchive/commit/fa7438a0ff4033e4741c807394a9af6207940d71 (Patch, Third Party Advisory)
- usn.ubuntu.com/3736-1/ (vendor-advisory, Third Party Advisory)
- security.gentoo.org/glsa/201908-11 (vendor-advisory)
Frequently asked questions
- What is CVE-2017-14166?
- CVE-2017-14166 is a medium-severity vulnerability in Libarchive, classified under Out-of-bounds Read. CVSS score: 6.5/10. Published 2017-09-06.
- How severe is CVE-2017-14166?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2017-14166 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.