PT-2022-6888 · Libtiff+8 · Libtiff+8

Published 2022-05-22 · Updated 2025-06-03 · CVE-2022-2521

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions libtiff version 4.4.0rc1

Description The issue is related to an invalid pointer free operation in the TIFFClose() function at tif close.c:131, called by tiffcrop.c:2522. This can cause a program crash and denial of service when processing crafted input. The vulnerability is associated with incorrect handling of hard links, which can be exploited by a remote attacker to cause a denial of service.

Recommendations For libtiff version 4.4.0rc1, consider disabling the TIFFClose() function as a temporary workaround until a patch is available. Restrict access to the tiffcrop module to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

DoS

Weakness Enumeration

CWE-763

Related Identifiers

ALSA-2023:0095

ALSA-2023:0302

ALT-PU-2022-3360

ALT-PU-2022-3428

ALT-PU-2025-7532

BDU:2023-05411

CESA-2023_0095

CVE-2022-2521

DSA-5333-1

MGASA-2022-0410

OESA-2022-1917

OPENSUSE-SU-2022_3690-1

OPENSUSE-SU-2024:12420-1

RHSA-2023:0095

RHSA-2023:0302

RHSA-2023_0095

RHSA-2023_0302

RLSA-2023:0095

RLSA-2023:0302

SUSE-SU-2022:3679-1

SUSE-SU-2022:3690-1

USN-5714-1

Affected Products

Alt Linux

Almalinux

Centos

Linuxmint

Red Hat

Rocky Linux

Suse

Ubuntu

Libtiff

References · 102

• 🔥 https://gitlab.com/libtiff/libtiff/-/merge_requests/378 · Exploit
• 🔥 https://gitlab.com/libtiff/libtiff/-/issues/422 · Exploit
• https://osv.dev/vulnerability/ALPINE-CVE-2022-2521 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-3597 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-3627 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2022-2521 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-2953 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-2868 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-5705-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-3570 · Vendor Advisory
• https://osv.dev/vulnerability/ALSA-2023:0095 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-5714-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-2521 · Security Note
• https://debian.org/security/2023/dsa-5333 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2022-2521 · Security Note