Summary
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 issue to cause a denial of
service, or possibly execute arbitrary code. (CVE-2022-44640)
Fixed packages 4
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · 18.04 LTS 18.04:LTS | heimdal | 7.5.0+dfsg-1ubuntu0.3 |
| Ubuntu · 20.04 LTS 20.04:LTS | heimdal | 7.7.0+dfsg-1ubuntu1.3 |
| Ubuntu · Pro 14.04 LTS Pro:14.04:LTS | heimdal | 1.6~git20131207+dfsg-1ubuntu1.2+esm3 |
| Ubuntu · Pro 16.04 LTS Pro:16.04:LTS | heimdal | 1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm3 |
Vulnerabilities 4
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Critical 9.8
Heimdal before 7.7.1 allows remote attackers to execute arbitrary code because of an invalid free in the ASN.1 codec us…
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High 8.8
PAC parsing in MIT Kerberos 5 (aka krb5) before 1.19.4 and 1.20.x before 1.20.1 has integer overflows that may lead to …
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High 7.5
Heimdal before 7.7.1 allows attackers to cause a NULL pointer dereference in a SPNEGO acceptor via a preferred_mech_typ…
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Medium 4.3
A heap-based buffer overflow vulnerability was found in Samba within the GSSAPI unwrap_des() and unwrap_des3() routines…