#VU65759 Out-of-bounds read in GNU SASL - CVE-2022-2469

Vulnerability identifier: #VU65759

Vulnerability risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-2469

CWE-ID: CWE-125

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
GNU SASL
Universal components / Libraries / Libraries used by multiple products

Vendor: GNU

Description

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

The vulnerability exists due to a boundary condition in the "lib/gssapi/server.c". A remote authenticated GSS-API client can send specially crafted request to the GNU SASL server, trigger an out-of-bounds read error and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

GNU SASL: 0.0.0 - 2.0.0

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External links
https://gitlab.com/gitlab-org/cves/-/blob/master/2022/CVE-2022-2469.json
https://gitlab.com/gsasl/gsasl/-/commit/796e4197f696261c1f872d7576371232330bcc30

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.