CVE-2021-44758
published 2022-12-26CVE-2021-44758: 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…
PriorityP434high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
1.22%
65.4th percentile
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.
Affected
16 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | heimdal | < heimdal 7.8.git20221115.a6cf945+dfsg-1 (bookworm) | heimdal 7.8.git20221115.a6cf945+dfsg-1 (bookworm) |
| heimdal_project | heimdal | < 7.7.1 | 7.7.1 |
| heimdal_project | heimdal | >= 0 < 7.7.0+dfsg-2+deb11u2 | 7.7.0+dfsg-2+deb11u2 |
| heimdal_project | heimdal | >= 0 < 7.8.git20221115.a6cf945+dfsg-1 | 7.8.git20221115.a6cf945+dfsg-1 |
| heimdal_project | heimdal | >= 0 < 7.8.git20221115.a6cf945+dfsg-1 | 7.8.git20221115.a6cf945+dfsg-1 |
| heimdal_project | heimdal | >= 0 < 7.8.git20221115.a6cf945+dfsg-1 | 7.8.git20221115.a6cf945+dfsg-1 |
| heimdal_project | heimdal | >= 0 < 7.5.0+dfsg-1ubuntu0.3 | 7.5.0+dfsg-1ubuntu0.3 |
| heimdal_project | heimdal | >= 0 < 7.7.0+dfsg-1ubuntu1.3 | 7.7.0+dfsg-1ubuntu1.3 |
| heimdal_project | heimdal | >= 0 < 1.6~git20131207+dfsg-1ubuntu1.2+esm3 | 1.6~git20131207+dfsg-1ubuntu1.2+esm3 |
| heimdal_project | heimdal | >= 0 < 1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm3 | 1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm3 |
| msrc | azl3_samba_4.18.3-1_on_azure_linux_3.0 | — | — |
| msrc | azure_linux_3.0_arm | — | — |
| msrc | azure_linux_3.0_x64 | — | — |
| msrc | cbl_mariner_1.0_arm | — | — |
| msrc | cbl_mariner_1.0_x64 | — | — |
| msrc | cm1_heimdal_7.7.1-1_on_cbl_mariner_1.0 | — | — |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
osv7.5HIGH
vendor_debian7.5HIGH
vendor_msrc7.5HIGH
vendor_ubuntu7.5HIGH
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
Ubuntu
Heimdal vulnerabilities
vendor_ubuntu·2023-01-12·CVSS 7.5
CVE-2022-42898 [HIGH] Heimdal vulnerabilities
Title: Heimdal vulnerabilities
Summary: Several security issues were fixed in Heimdal.
It was discovered that Heimdal incorrectly handled certain SPNEGO tokens. A
remote attacker could possibly use this issue to cause a denial of service.
(CVE-2021-44758)
Evgeny Legerov discovered that Heimdal incorrectly handled memory when
performing certain DES decryption operations. A remote attacker could use
this issue to cause a denial of service, or possibly execute arbitrary
code. (CVE-2022-3437)
Greg Hudson discovered that Kerberos PAC implementation used in Heimdal
incorrectly handled certain parsing operations. A remote attacker could use
this issue to cause a denial of service, or possibly execute arbitrary
code. (CVE-2022-42898)
It was discovered that Heimdal's KDC did not properly handl
Microsoft
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.
vendor_msrc·2022-12-13·CVSS 7.5
CVE-2021-44758 [HIGH] CWE-476 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.
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.
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to ref
BSD
FreeBSD-SA-22:14.heimdal: Multiple vulnerabilities in Heimdal [REVISED]
bsd_advisories·2022-11-15·CVSS 5.4
CVE-2019-14870 [MEDIUM] FreeBSD-SA-22:14.heimdal: Multiple vulnerabilities in Heimdal [REVISED]
FreeBSD-SA-22:14.heimdal Security Advisory
The FreeBSD Project
Topic: Multiple vulnerabilities in Heimdal [REVISED]
Category: contrib
Module: heimdal
Announced: 2022-11-15
Revised: 2022-11-29
Affects: All supported versions of FreeBSD.
Corrected: 2022-11-15 21:15:35 UTC (stable/13, 13.1-STABLE)
2022-11-16 01:50:27 UTC (releng/13.1, 13.1-RELEASE-p4)
2022-11-15 21:16:56 UTC (stable/12, 12.4-STABLE)
2022-11-16 01:47:57 UTC (releng/12.4, 12.4-RC2-p1)
2022-11-16 01:40:21 UTC (releng/12.3, 12.3-RELEASE-p9)
CVE Name: CVE-2019-14870, CVE-2022-3437, CVE-2022-42898,
CVE-2022-44640, CVE-2021-44758
0. Revision history
v1.0 2022-11-15 Initial release.
v1.1 2022-11-29 Updated with reference to FreeBSD-EN-22:28.heimdal.
For general information regarding FreeBSD Security Advisories,
including descrip
Debian
CVE-2021-44758: heimdal - Heimdal before 7.7.1 allows attackers to cause a NULL pointer dereference in a S...
vendor_debian·2021·CVSS 7.5
CVE-2021-44758 [HIGH] CVE-2021-44758: heimdal - Heimdal before 7.7.1 allows attackers to cause a NULL pointer dereference in a S...
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.
Scope: local
bookworm: resolved (fixed in 7.8.git20221115.a6cf945+dfsg-1)
bullseye: resolved (fixed in 7.7.0+dfsg-2+deb11u2)
forky: resolved (fixed in 7.8.git20221115.a6cf945+dfsg-1)
sid: resolved (fixed in 7.8.git20221115.a6cf945+dfsg-1)
trixie: resolved (fixed in 7.8.git20221115.a6cf945+dfsg-1)
OSV
heimdal vulnerabilities
osv·2023-01-12·CVSS 7.5
CVE-2021-44758 [HIGH] heimdal vulnerabilities
heimdal vulnerabilities
It was discovered that Heimdal incorrectly handled certain SPNEGO tokens. A
remote attacker could possibly use this issue to cause a denial of service.
(CVE-2021-44758)
Evgeny Legerov discovered that Heimdal incorrectly handled memory when
performing certain DES decryption operations. A remote attacker could use
this issue to cause a denial of service, or possibly execute arbitrary
code. (CVE-2022-3437)
Greg Hudson discovered that Kerberos PAC implementation used in Heimdal
incorrectly handled certain parsing operations. A remote attacker could use
this issue to cause a denial of service, or possibly execute arbitrary
code. (CVE-2022-42898)
It was discovered that Heimdal's KDC did not properly handle certain error
conditions. A remote attacker could use this iss
OSV
CVE-2021-44758: Heimdal before 7
osv·2022-12-26·CVSS 7.5
CVE-2021-44758 [HIGH] CVE-2021-44758: Heimdal before 7
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.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://github.com/heimdal/heimdal/commit/f9ec7002cdd526ae84fbacbf153162e118f22580https://github.com/heimdal/heimdal/security/advisories/GHSA-69h9-669w-88xvhttps://security.gentoo.org/glsa/202310-06https://github.com/heimdal/heimdal/commit/f9ec7002cdd526ae84fbacbf153162e118f22580https://github.com/heimdal/heimdal/security/advisories/GHSA-69h9-669w-88xvhttps://security.gentoo.org/glsa/202310-06
2022-12-26
Published