Debian update for heimdal

Published: 2023-02-08

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2022-3437 CVE-2022-45142
CWE-ID	CWE-122 CWE-388
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	Debian Linux Operating systems & Components / Operating system heimdal (Debian package) Operating systems & Components / Operating system package or component
Vendor	Debian

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Heap-based buffer overflow

EUVDB-ID: #VU68701

Risk: Low

CVSSv4.0: 0.6 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-3437

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error within the GSSAPI unwrap_des() and unwrap_des3() routines of Heimdal. A remote user can send specially crafted data to the application, trigger a heap-based buffer overflow and perform a denial of service (DoS) attack.

Mitigation

Update heimdal package to version 7.7.0+dfsg-2+deb11u3.

Vulnerable software versions

Debian Linux: All versions

heimdal (Debian package): before 7.7.0+dfsg-2+deb11u3

CPE2.3

External links

https://www.debian.org/security/2023/dsa-5344

Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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

2) Error Handling

EUVDB-ID: #VU72057