CVE-2018-10963 — The TIFFWriteDirectorySec() function in tif_dirwrite

The TIFFWriteDirectorySec() function in tif_dirwrite.c in LibTIFF through 4.0.9 allows remote attackers to cause a denial of service (assertion failure and application crash) via a crafted file, a different vulnerability than CVE-2017-13726.

01What is this vulnerability?

The TIFFWriteDirectorySec() function in tif_dirwrite.c in LibTIFF through 4.0.9 allows remote attackers to cause a denial of service (assertion failure and application crash) via a crafted file, a different vulnerability than CVE-2017-13726.

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

08Timeline

• Published: 2018-05-10T02:00:00.000Z
• Last modified: 2024-08-05T07:54:36.220Z

09References

• bugzilla.maptools.org — http://bugzilla.maptools.org/show_bug.cgi?id=2795
• usn.ubuntu.com — https://usn.ubuntu.com/3864-1/
• www.debian.org — https://www.debian.org/security/2018/dsa-4349
• lists.debian.org — https://lists.debian.org/debian-lts-announce/2018/07/msg00002.html
• access.redhat.com — https://access.redhat.com/errata/RHSA-2019:2053