#VU79568 NULL pointer dereference in LibTIFF - CVE-2023-2731
Vulnerability identifier: #VU79568
Vulnerability risk: Medium
CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2023-2731
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 within the LZWDecode() function in the libtiff/tif_lzw.c. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
LibTIFF: before 4.5.0
External links
https://github.com/libsdl-org/libtiff/commit/9be22b639ea69e102d3847dca4c53ef025e9527b
https://bugzilla.redhat.com/show_bug.cgi?id=2207635
https://gitlab.com/libtiff/libtiff/-/issues/548
https://access.redhat.com/security/cve/CVE-2023-2731
https://security.netapp.com/advisory/ntap-20230703-0009/
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.
