CVE-2018-7456
MEDIUM severity · CVSS 6.5 · CWE-476
6.5CVSS MEDIUM
Summary
A NULL Pointer Dereference occurs in the function TIFFPrintDirectory in tif_print.c in LibTIFF 3.9.3, 3.9.4, 3.9.5, 3.9.6, 3.9.7, 4.0.0alpha4, 4.0.0alpha5, 4.0.0alpha6, 4.0.0beta7, 4.0.0, 4.0.1, 4.0.2, 4.0.3, 4.0.4, 4.0.4beta, 4.0.5, 4.0.6, 4.0.7, 4.0.8 and 4.0.9 when using the tiffinfo tool to print crafted TIFF information, a different vulnerability than CVE-2017-18013. (This affects an earlier part of the TIFFPrintDirectory function that was not addressed by the CVE-2017-18013 patch.)
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionRequired
Confidentiality impactNone
Integrity impactNone
Availability impactHigh
Exploit probability (EPSS)3%
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Official patch: https://gitlab.com/libtiff/libtiff/commit/be4c85b16e8801a16eec25e80eb9f3dd6a96731b ↗
Additional information
- NVD record
- https://gitlab.com/libtiff/libtiff/commit/be4c85b16e8801a16eec25e80eb9f3dd6a96731bPatch
- https://access.redhat.com/errata/RHSA-2019:2051
- https://access.redhat.com/errata/RHSA-2019:2053
- https://lists.debian.org/debian-lts-announce/2018/04/msg00010.htmlAdvisory
- https://lists.debian.org/debian-lts-announce/2018/04/msg00011.htmlAdvisory
- https://lists.debian.org/debian-lts-announce/2018/07/msg00002.htmlAdvisory
- http://bugzilla.maptools.org/show_bug.cgi?id=2778Advisory
- https://github.com/xiaoqx/pocs/tree/master/libtiffAdvisory