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."
NOTE: The following CVSS v3.0 metrics and score provided are preliminary and subject to review.
|Base Score:||8.8||Base Metrics:||AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H|
|Access Vector:||Network||Attack Complexity:||Low|
|Privileges Required:||Low||User Interaction:||None|
|Integrity Impact:||High||Availability Impact:||High|
|Oracle Linux version 6 (krb5)||ELSA-2023-12104||2023-02-09|
|Oracle Linux version 7 (krb5)||ELSA-2022-8640||2022-11-29|
|Oracle Linux version 8 (krb5)||ELSA-2022-8638||2022-11-28|
|Oracle Linux version 9 (krb5)||ELSA-2022-8637||2022-11-29|
|Oracle VM version 3 (krb5)||OVMSA-2023-0008||2023-05-04|
This page is generated automatically and has not been checked for errors or omissions. For clarification or corrections please contact the Oracle Linux ULN team