CVE-2022-42898

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 remote code execution (in KDC, kadmind, or a GSS or Kerberos application server) on 32-bit platforms (which have a resultant heap-based buffer overflow), and cause a denial of service on other platforms. This occurs in krb5_pac_parse in lib/krb5/krb/pac.c. Heimdal before 7.7.1 has "a similar bug."

USN-5800-1 — heimdal vulnerabilities

Affected: Ubuntu:Pro:14.04:LTS: heimdal, Ubuntu:Pro:16.04:LTS: heimdal, Ubuntu:18.04:LTS: heimdal, Ubuntu:20.04:LTS: 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 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)

Most recent entries from all

CVE-2022-42898

USN-5800-1 — heimdal vulnerabilities