Denial of service in libjpeg-turbo

1) Out-of-bounds read

EUVDB-ID: #VU80613

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-29390

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 heap-based buffer over-read within the decompress_smooth_data() function in jdcoefct.c. A remote attacker can pass specially crafted image to the application and perform a denial of service attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

libjpeg-turbo: 2.0.90

External links

http://bugzilla.redhat.com/show_bug.cgi?id=1943797
http://github.com/libjpeg-turbo/libjpeg-turbo/blob/4e52b66f342a803d3b8099b79607e3158d3a241c/jdcoefct.c#L595
http://github.com/libjpeg-turbo/libjpeg-turbo/commits/main/jdcoefct.c

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.