Denial of service in GD Graphics Library

1) Out-of-bounds read

EUVDB-ID: #VU56412

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-38115

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary condition in the "ead_header_tga" in gd_tga.c. A remote attacker can send a specially crafted TGA file, trigger out-of-bounds read error and cause a denial of service condition on the system.

Mitigation

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

GD Graphics Library: 2.0.1 - 2.3.2

CPE2.3

• cpe:2.3:a:boutell_com:gd_graphics_library:2.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:boutell_com:gd_graphics_library:2.0.15:*:*:*:*:*:*:*
• cpe:2.3:a:boutell_com:gd_graphics_library:2.0.20:*:*:*:*:*:*:*

External links

https://github.com/libgd/libgd/pull/711/commits/8b111b2b4a4842179be66db68d84dda91a246032
https://github.com/libgd/libgd/issues/697

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.