Denial of service in Libtiff

Published: 2023-08-16

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2023-2731 CVE-2023-30086
CWE-ID	CWE-476 CWE-787
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	LibTIFF Universal components / Libraries / Libraries used by multiple products
Vendor	LibTIFF

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) NULL pointer dereference

EUVDB-ID: #VU79568

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-2731

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

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

http://github.com/libsdl-org/libtiff/commit/9be22b639ea69e102d3847dca4c53ef025e9527b
http://bugzilla.redhat.com/show_bug.cgi?id=2207635
http://gitlab.com/libtiff/libtiff/-/issues/548
http://access.redhat.com/security/cve/CVE-2023-2731
http://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.

2) Out-of-bounds write

EUVDB-ID: #VU79569