Description
A flaw was found in Libtiff. This vulnerability is a "write-what-where" condition, triggered when the library processes a specially crafted TIFF image file. By providing an abnormally large image height value in the file's metadata, an attacker can trick the library into writing attacker-controlled color data to an arbitrary memory location. This memory corruption can be exploited to cause a denial of service (application crash) or to achieve arbitrary code execution with the permissions of the user.
Problem types
Product status
Any version before 4.7.1
0:4.6.0-6.el10_0.1 (rpm) before *
0:3.9.4-12.el7_9.1 (rpm) before *
0:3.9.4-14.el8_10 (rpm) before *
0:4.0.9-35.el8_10 (rpm) before *
0:4.0.9-3.el8_10 (rpm) before *
0:3.9.4-13.el8_2.1 (rpm) before *
0:3.9.4-13.el8_4.1 (rpm) before *
0:3.9.4-13.el8_4.1 (rpm) before *
0:3.9.4-13.el8_6.1 (rpm) before *
0:3.9.4-13.el8_6.1 (rpm) before *
0:3.9.4-13.el8_6.1 (rpm) before *
0:3.9.4-13.el8_8.1 (rpm) before *
0:3.9.4-13.el8_8.1 (rpm) before *
0:4.4.0-13.el9_6.2 (rpm) before *
Timeline
| 2025-09-03: | Reported to Red Hat. |
| 2025-09-22: | Made public. |
Credits
Red Hat would like to thank Gareth C (AnchorSec Ltd.) for reporting this issue.
References
github.com/...Tiff-4.7.0-Write-What-Where?tab=readme-ov-file
lists.debian.org/debian-lts-announce/2025/09/msg00031.html
www.openwall.com/lists/oss-security/2025/09/26/3
access.redhat.com/errata/RHSA-2025:17651 (RHSA-2025:17651)
access.redhat.com/errata/RHSA-2025:17675 (RHSA-2025:17675)
access.redhat.com/errata/RHSA-2025:17710 (RHSA-2025:17710)
access.redhat.com/errata/RHSA-2025:17738 (RHSA-2025:17738)
access.redhat.com/errata/RHSA-2025:17739 (RHSA-2025:17739)
access.redhat.com/errata/RHSA-2025:17740 (RHSA-2025:17740)
access.redhat.com/errata/RHSA-2025:19113 (RHSA-2025:19113)
access.redhat.com/errata/RHSA-2025:19156 (RHSA-2025:19156)
access.redhat.com/errata/RHSA-2025:19276 (RHSA-2025:19276)
access.redhat.com/errata/RHSA-2025:19906 (RHSA-2025:19906)
access.redhat.com/security/cve/CVE-2025-9900
bugzilla.redhat.com/show_bug.cgi?id=2392784 (RHBZ#2392784)
github.com/...Tiff-4.7.0-Write-What-Where?tab=readme-ov-file
gitlab.com/libtiff/libtiff/-/issues/704
gitlab.com/libtiff/libtiff/-/merge_requests/732
libtiff.gitlab.io/libtiff/releases/v4.7.1.html