[16890] in Kerberos-V5-bugs
[krbdev.mit.edu #9099] git commit
daemon@ATHENA.MIT.EDU (Greg Hudson via RT)
Tue Jul 11 18:57:10 2023
From: "Greg Hudson via RT" <rt@krbdev.mit.edu>
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<URL: https://krbdev.mit.edu/rt/Ticket/Display.html?id=9099 >
Ensure array count consistency in kadm5 RPC
In _xdr_kadm5_principal_ent_rec(), ensure that n_key_data matches the
key_data array count when decoding. Otherwise when the structure is
later freed, xdr_array() could iterate over the wrong number of
elements, either leaking some memory or freeing uninitialized
pointers. Reported by Robert Morris.
CVE-2023-36054:
An authenticated attacker can cause a kadmind process to crash by
freeing uninitialized pointers. Remote code execution is unlikely.
An attacker with control of a kadmin server can cause a kadmin client
to crash by freeing uninitialized pointers.
(cherry picked from commit ef08b09c9459551aabbe7924fb176f1583053cdd)
https://github.com/krb5/krb5/commit/c81ffb6c8578a9b55c9d0a10342b5bc1bc6ec4df
Author: Greg Hudson <ghudson@mit.edu>
Commit: c81ffb6c8578a9b55c9d0a10342b5bc1bc6ec4df
Branch: krb5-1.20
src/lib/kadm5/kadm_rpc_xdr.c | 11 ++++++++---
1 file changed, 8 insertions(+), 3 deletions(-)
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