Red Hat Bugzilla – Bug 435087
CVE-2008-0948 krb5: incorrect handling of high-numbered file descriptors in RPC library
Last modified: 2016-06-17 17:07:40 EDT
While investigating issue CVE-2008-0947 reported by MIT Kerboros security team
for krb5 version 1.4 and newer, it was discovered that RPC library as shipped
with krb5 versions prior to 1.3 (i.e. as shipped with Red Hat Enterprise Linux
2.1 and 3) is affected by similar problem. Unauthenticated remote attacker
could cause application using RPC library (e.g. kadmind) to exit under certain
Problem exists in RPC library connection handling code that did not properly
handle situations when too many connections were opened.
Red Hat would like to thank MIT for reporting this issue.
This issue was addressed upstream long ago via following patch:
This issue only affected krb5 package in Red Hat Enterprise Linux 2.1 and 3.
However, default configuration did not affect default configuration. This issue
only affected systems configured to use higher resource limit than default 1024
for 'open files'.
This issue was addressed in:
Red Hat Enterprise Linux: