Vulnerabilities
Misconfiguration
Compliance
CVE Vulnerabilities

CVE-2021-44758

NULL Pointer Dereference

Published: Dec 26, 2022 | Modified: Apr 14, 2025
CVSS 3.x
7.5
HIGH
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
RedHat/V2
RedHat/V3
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2021-44758
CWEhttps://cwe.mitre.org/data/definitions/476.html

Heimdal before 7.7.1 allows attackers to cause a NULL pointer dereference in a SPNEGO acceptor via a preferred_mech_type of GSS_C_NO_OID and a nonzero initial_response value to send_accept.

Weakness

The product dereferences a pointer that it expects to be valid but is NULL.

Affected Software

NameVendorStart VersionEnd Version
HeimdalHeimdal_project*7.7.1 (excluding)
HeimdalUbuntubionic*
HeimdalUbuntudevel*
HeimdalUbuntuesm-apps/jammy*
HeimdalUbuntuesm-apps/noble*
HeimdalUbuntuesm-infra-legacy/trusty*
HeimdalUbuntuesm-infra/bionic*
HeimdalUbuntuesm-infra/focal*
HeimdalUbuntuesm-infra/xenial*
HeimdalUbuntufocal*
HeimdalUbuntujammy*
HeimdalUbuntukinetic*
HeimdalUbuntulunar*
HeimdalUbuntumantic*
HeimdalUbuntunoble*
HeimdalUbuntuoracular*
HeimdalUbuntuplucky*
HeimdalUbuntuquesting*
HeimdalUbuntutrusty*
HeimdalUbuntutrusty/esm*
HeimdalUbuntuupstream*
HeimdalUbuntuxenial*

Potential Mitigations

References

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