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| author | Greg Hudson <ghudson@mit.edu> | 2010-03-05 17:45:46 +0000 |
|---|---|---|
| committer | Greg Hudson <ghudson@mit.edu> | 2010-03-05 17:45:46 +0000 |
| commit | f58cc5a2589e1589ff17c0057ff5da97cac834d7 (patch) | |
| tree | 004d56ab1c80e3df5f1bb226573b0e0f79d31fd3 /src/kdc | |
| parent | 892ad7d0d8eaa73a22d01f4c07dfe3a8df4da02a (diff) | |
| download | krb5-f58cc5a2589e1589ff17c0057ff5da97cac834d7.tar.gz krb5-f58cc5a2589e1589ff17c0057ff5da97cac834d7.tar.xz krb5-f58cc5a2589e1589ff17c0057ff5da97cac834d7.zip | |
Ignore improperly encoded signedpath AD elements
We have some reason to believe Microsoft and Heimdal are both using
the authdata value 142 for different purposes, leading to failures in
verify_ad_signedpath(). For better interoperability, treat such
tickets as unsigned, rather than invalid.
ticket: 6676
target_version: 1.8.1
tags: pullup
git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@23766 dc483132-0cff-0310-8789-dd5450dbe970
Diffstat (limited to 'src/kdc')
| -rw-r--r-- | src/kdc/kdc_authdata.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/kdc/kdc_authdata.c b/src/kdc/kdc_authdata.c index 50975580c..b5de64de2 100644 --- a/src/kdc/kdc_authdata.c +++ b/src/kdc/kdc_authdata.c @@ -934,8 +934,12 @@ verify_ad_signedpath(krb5_context context, enc_sp.length = sp_authdata[0]->length; code = decode_krb5_ad_signedpath(&enc_sp, &sp); - if (code != 0) + if (code != 0) { + /* Treat an invalid signedpath authdata element as a missing one, since + * we believe MS is using the same number for something else. */ + code = 0; goto cleanup; + } code = verify_ad_signedpath_checksum(context, krbtgt, |