Denial of service in Facebook Zstandard

1) Buffer overflow

EUVDB-ID: #VU74201

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-2022-4899

CWE-ID: CWE-119 - Memory corruption

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 error in util.c when processing empty arguments in the command line tool. A remote attacker can pass an empty string as an argument, trigger buffer underflow and crash the application.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Zstandard: 1.0.0 - 1.5.2

CPE2.3

• cpe:2.3:a:facebook:zstd:1.0.0:*:*:*:*:*:*:*
• cpe:2.3:a:facebook:zstd:1.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:facebook:zstd:1.1.1:*:*:*:*:*:*:*
• cpe:2.3:a:facebook:zstd:1.1.2:*:*:*:*:*:*:*
• cpe:2.3:a:facebook:zstd:1.1.3:*:*:*:*:*:*:*
• cpe:2.3:a:facebook:zstd:1.1.4:*:*:*:*:*:*:*
• cpe:2.3:a:facebook:zstd:1.2.0:*:*:*:*:*:*:*
• cpe:2.3:a:facebook:zstd:1.3.0:*:*:*:*:*:*:*
• cpe:2.3:a:facebook:zstd:1.3.1:*:*:*:*:*:*:*
• cpe:2.3:a:facebook:zstd:1.3.2:*:*:*:*:*:*:*

External links

https://github.com/facebook/zstd/pull/3220
https://bugzilla.redhat.com/show_bug.cgi?id=2179864
https://bugzilla.suse.com/show_bug.cgi?id=1209533

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.