[17230] in Kerberos-V5-bugs
[krbdev.mit.edu #9242] git commit
daemon@ATHENA.MIT.EDU (Greg Hudson via RT)
Mon Nov 9 12:02:30 2026
From: "Greg Hudson via RT" <rt@krbdev.mit.edu>
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Date: Mon, 09 Nov 2026 12:02:24 -0500
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<URL: https://krbdev.mit.edu/rt/Ticket/Display.html?id=9242 >
Check TXT lookup results on Windows
In the Windows implementation of k5_try_realm_txt_rr(), iterate
through the received records and pick one that is a non-empty TXT
record. Otherwise the function could dereference an invalid pointer
and crash (depending on the behavior of DnsQuery_UTF8(), which is not
fully known). Discovered by Aisle Research.
(cherry picked from commit adce9735b119b75387e64016280faa1320a71ec6)
https://github.com/krb5/krb5/commit/30b952314aa335db4399227d521a4d2a44207a86
Author: Greg Hudson <ghudson@mit.edu>
Commit: 30b952314aa335db4399227d521a4d2a44207a86
Branch: krb5-1.22
src/lib/krb5/os/dnsglue.c | 18 +++++++++++++-----
1 file changed, 13 insertions(+), 5 deletions(-)
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