PT-2021-8087 · Heimdal+7 · Heimdal+7

CVE-2022-44640 · Published 2021-12-09 · Updated 2025-07-29

Positive Technologies (AI Summary)

CVSS v2.0

10

Critical

Base vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Heimdal versions prior to 7.7.1

Description The issue is related to an invalid free in the ASN.1 codec used by the Key Distribution Center (KDC), which can be exploited by remote attackers to execute arbitrary code. This can also lead to unauthorized access to confidential data, disruption of data integrity, and denial of service.

Recommendations For Heimdal versions prior to 7.7.1, update to version 7.7.1 or later to resolve the issue. As a temporary workaround, consider restricting access to the Key Distribution Center (KDC) to minimize the risk of exploitation.

Exploit

Fix

RCE

Double Free

Weakness Enumeration

CWE-415

Related Identifiers

ALT-PU-2022-3352

ALT-PU-2023-1371

AZL-44388

BDU:2024-06952

CVE-2022-44640

DLA-3206-1

DSA-5287-1

ECHO-BB12-88EF-D3A9

GHSA-88PM-HFMQ-7VV4

MGASA-2022-0468

OESA-2022-2153

OPENSUSE-SU-2023:0019-1

OPENSUSE-SU-2023:0020-1

OPENSUSE-SU-2024:12580-1

OPENSUSE-SU-2024:12587-1

ROSA-SA-2024-2419

USN-5800-1

Affected Products

Alt Linux

Astra Linux

Debian

Freebsd

Heimdal

Linuxmint

Samba

Ubuntu

References · 57

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/44xxx/CVE-2022-44640.json · Exploit
• https://lists.fedoraproject.org/archives/list/[e-mail]/thread/AYXWFESBZJMBNACFDHWWH7KETGKUXDPO · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2024:12587-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-44640 · Security Note
• https://ubuntu.com/security/CVE-2022-3437 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2023:0019-1 · Vendor Advisory
• https://osv.dev/vulnerability/USN-5800-1 · Vendor Advisory
• https://bdu.fstec.ru/vul/2024-06952 · Security Note
• https://osv.dev/vulnerability/AZL-44388 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-42898 · Vendor Advisory
• https://osv.dev/vulnerability/DLA-3206-1 · Vendor Advisory
• https://osv.dev/vulnerability/OESA-2022-2153 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2022-44640 · Vendor Advisory
• https://security.gentoo.org/glsa/202310-06 · Vendor Advisory
• https://debian.org/lts/security/2022/dla-3206 · Vendor Advisory