#VU51445 Integer overflow in LibTIFF - CVE-2020-35523
Vulnerability identifier: #VU51445
Vulnerability risk: High
CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]
CVE-ID: CVE-2020-35523
CWE-ID:
CWE-190
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 execute arbitrary code on the target system.
The vulnerability exists due to integer overflow within the the tif_getimage.c file in libtiff. A remote attacker can pass specially crafted file to the application, trigger an integer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
LibTIFF: 4.0 - 4.1.0
External links
https://bugzilla.redhat.com/show_bug.cgi?id=1932040
https://gitlab.com/libtiff/libtiff/-/commit/c8d613ef497058fe653c467fc84c70a62a4a71b2
https://gitlab.com/libtiff/libtiff/-/merge_requests/160
https://www.debian.org/security/2021/dsa-4869
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.
