[16227] in Kerberos-V5-bugs
[krbdev.mit.edu #8767] git commit
daemon@ATHENA.MIT.EDU (Greg Hudson via RT)
Mon Jan 7 01:58:14 2019
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From: Greg Hudson via RT <rt-comment@KRBDEV-PROD-APP-1.mit.edu>
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To: "'AdminCc of krbdev.mit.edu Ticket #8767'":;
Date: Mon, 7 Jan 2019 01:58:08 -0500
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Remove incorrect KDC assertion
The assertion in return_enc_padata() is reachable because
kdc_make_s4u2self_rep() may have previously added encrypted padata.
It is no longer necessary because the code uses add_pa_data_element()
instead of allocating a new list.
CVE-2018-20217:
In MIT krb5 1.8 or later, an authenticated user who can obtain a TGT
using an older encryption type (DES, DES3, or RC4) can cause an
assertion failure in the KDC by sending an S4U2Self request.
[ghudson@mit.edu: rewrote commit message with CVE description]
(cherry picked from commit 94e5eda5bb94d1d44733a49c3d9b6d1e42c74def)
https://github.com/krb5/krb5/commit/17cc01779e8e40cc414b39bc2a99fd48bb064124
Author: Isaac Boukris <iboukris@gmail.com>
Committer: Greg Hudson <ghudson@mit.edu>
Commit: 17cc01779e8e40cc414b39bc2a99fd48bb064124
Branch: krb5-1.15
src/kdc/kdc_preauth.c | 1 -
src/tests/gssapi/t_s4u.py | 7 +++++++
2 files changed, 7 insertions(+), 1 deletions(-)
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