Integer overflow in Libtiff
CVE-2019-14973
_TIFFCheckMalloc and _TIFFCheckRealloc in tif_aux.c in LibTIFF through 4.0.10 mishandle Integer Overflow checks because they rely on compiler behavior that is undefined by the applicable C standards. This can, for example, lead to an application crash.
Vulnerability class: Integer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.042 (90.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 90.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.042 · newest: 0.042 · change: 0.000
Affected products
- Libtiff
- Debian Linux — versions 8.0, 9.0, 10.0
- Fedoraproject Fedora — versions 30, 31
- openSUSE Leap — versions 15.1, 15.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- gitlab.com/libtiff/libtiff/merge_requests/90 (Patch, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2019/08/msg00031.html (mailing-list, Mailing List, Third Party Advisory)
- seclists.org/bugtraq/2019/Nov/5 (mailing-list, Mailing List, Third Party Advisory)
- packetstormsecurity.com/files/155095/Slackware-Security-Advisory-libtiff-Update… (VDB Entry, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- seclists.org/bugtraq/2020/Jan/32 (mailing-list, Mailing List, Third Party Advisory)
- www.debian.org/security/2020/dsa-4608 (vendor-advisory, Third Party Advisory)
- www.debian.org/security/2020/dsa-4670 (vendor-advisory, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2020-09/msg00102.html (vendor-advisory, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-14973?
- CVE-2019-14973 is a medium-severity vulnerability in Libtiff, classified under Integer Overflow or Wraparound. CVSS score: 6.5/10. Published 2019-08-14.
- How severe is CVE-2019-14973?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2019-14973 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.