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USN-5800-1: Heimdal vulnerabilities

12 January 2023

Several security issues were fixed in Heimdal.

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Releases

Packages

  • heimdal - Heimdal Kerberos Network Authentication Protocol

Details

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)

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Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 20.04
Ubuntu 18.04
Ubuntu 16.04
Ubuntu 14.04

After a standard system update you need to restart any application
using Heimdal libraries to make all the necessary changes.

References

Related notices

  • USN-5822-1: ctdb, libnss-winbind, libwbclient0, samba-libs, python3-ldb, libpam-winbind, samba-common, libldb-dev, samba-vfs-modules, libsmbclient-dev, python3-ldb-dev, smbclient, samba-common-bin, samba-dsdb-modules, libldb2, ldb-tools, samba-testsuite, winbind, samba-dev, python3-samba, libsmbclient, libwbclient-dev, samba, registry-tools
  • USN-5828-1: krb5-k5tls, krb5-locales, libkrb5support0, libkadm5srv-mit9, libkdb5-8, libk5crypto3, libkrad-dev, libkdb5-10, libkdb5-7, krb5-doc, krb5-user, libkdb5-9, libgssapi-krb5-2, krb5-otp, libkrb5-3, krb5-multidev, krb5-gss-samples, libkadm5srv-mit12, libkadm5clnt-mit12, krb5-admin-server, krb5-kdc, libkrad0, krb5-kdc-ldap, krb5, libgssrpc4, libkadm5srv-mit8, libkadm5srv-mit11, krb5-kpropd, libkadm5clnt-mit11, libkadm5clnt-mit9, libkrb5-dev, krb5-pkinit
  • USN-5936-1: ctdb, libnss-winbind, libwbclient0, samba-libs, libpam-winbind, samba-common, samba-vfs-modules, libsmbclient-dev, smbclient, samba-common-bin, samba-dsdb-modules, samba-testsuite, winbind, samba-dev, python3-samba, libsmbclient, libwbclient-dev, samba, registry-tools

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Further reading