#VU63326 NULL pointer dereference in LibTIFF - CVE-2022-0561
Vulnerability identifier: #VU63326
Vulnerability risk: Medium
CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2022-0561
CWE-ID:
CWE-476
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
LibTIFF
Universal components / Libraries /
Libraries used by multiple products
Vendor: LibTIFF
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error in the memcpy() function within TIFFFetchStripThing() in tif_dirread.c. A remote attacker can trick victim to open specially crafted TIFF file and perform a denial of service (DoS) attack.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
LibTIFF: 3.9.0 - 4.3.0
External links
https://gitlab.com/freedesktop-sdk/mirrors/gitlab/libtiff/libtiff/-/commit/eecb0712f4c3a5b449f70c57988260a667ddbdef
https://gitlab.com/libtiff/libtiff/-/issues/362
https://gitlab.com/gitlab-org/cves/-/blob/master/2022/CVE-2022-0561.json
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DZEHZ35XVO2VBZ4HHCMM6J6TQIDSBQOM/
https://lists.debian.org/debian-lts-announce/2022/03/msg00001.html
https://security.netapp.com/advisory/ntap-20220318-0001/
https://www.debian.org/security/2022/dsa-5108
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
