Ticket History #8341: Verify decoded kadmin C strings [CVE-2015-8629]

# Wed Jan 27 15:59:25 2016 ghudson@mit.edu (Greg Hudson) - Ticket created

From:	ghudson@mit.edu
Subject:	git commit

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Verify decoded kadmin C strings [CVE-2015-8629]

In xdr_nullstring(), check that the decoded string is terminated with
a zero byte and does not contain any internal zero bytes.

CVE-2015-8629:

In all versions of MIT krb5, an authenticated attacker can cause
kadmind to read beyond the end of allocated memory by sending a string
without a terminating zero byte. Information leakage may be possible
for an attacker with permission to modify the database.

CVSSv2 Vector: AV:N/AC:H/Au:S/C:P/I:N/A:N/E:POC/RL:OF/RC:C

https://github.com/krb5/krb5/commit/df17a1224a3406f57477bcd372c61e04c0e5a5bb
Author: Greg Hudson <ghudson@mit.edu>
Commit: df17a1224a3406f57477bcd372c61e04c0e5a5bb
Branch: master
src/lib/kadm5/kadm_rpc_xdr.c | 9 ++++++++-
1 files changed, 8 insertions(+), 1 deletions(-)

# Wed Jan 27 15:59:25 2016 ghudson@mit.edu (Greg Hudson) - Requestor ghudson@mit.edu (Greg Hudson) added

# Wed Jan 27 15:59:25 2016 ghudson@mit.edu (Greg Hudson) - Status changed from 'new' to 'review'

# Wed Jan 27 15:59:26 2016 ghudson@mit.edu (Greg Hudson) - Tags pullup added

# Wed Jan 27 15:59:26 2016 ghudson@mit.edu (Greg Hudson) - Target_Version 1.13-next added

# Wed Jan 27 16:00:28 2016 ghudson@mit.edu (Greg Hudson) - Target_Version 1.14-next added

# Mon Feb 08 17:44:22 2016 tlyu (Taylor Yu) - Version_Fixed 1.14.1 added

# Mon Feb 08 17:44:22 2016 tlyu (Taylor Yu) - Correspondence added

From:	tlyu@mit.edu
Subject:	git commit

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Verify decoded kadmin C strings [CVE-2015-8629]

In xdr_nullstring(), check that the decoded string is terminated with
a zero byte and does not contain any internal zero bytes.

CVE-2015-8629:

In all versions of MIT krb5, an authenticated attacker can cause
kadmind to read beyond the end of allocated memory by sending a string
without a terminating zero byte. Information leakage may be possible
for an attacker with permission to modify the database.

CVSSv2 Vector: AV:N/AC:H/Au:S/C:P/I:N/A:N/E:POC/RL:OF/RC:C

(cherry picked from commit df17a1224a3406f57477bcd372c61e04c0e5a5bb)

https://github.com/krb5/krb5/commit/54a9a01c6a923d604cd06f321b8381ebc5cb42d8
Author: Greg Hudson <ghudson@mit.edu>
Committer: Tom Yu <tlyu@mit.edu>
Commit: 54a9a01c6a923d604cd06f321b8381ebc5cb42d8
Branch: krb5-1.14
src/lib/kadm5/kadm_rpc_xdr.c | 9 ++++++++-
1 files changed, 8 insertions(+), 1 deletions(-)

# Mon Feb 08 18:38:08 2016 tlyu (Taylor Yu) - Status changed from 'review' to 'resolved'

# Mon Feb 08 18:38:08 2016 tlyu (Taylor Yu) - Version_Fixed 1.13.4 added

# Mon Feb 08 18:38:08 2016 tlyu (Taylor Yu) - CustomField pullup deleted

# Mon Feb 08 18:38:08 2016 tlyu (Taylor Yu) - Correspondence added

From:	tlyu@mit.edu
Subject:	git commit

Download (untitled) / with headers
text/plain 904B

Verify decoded kadmin C strings [CVE-2015-8629]

In xdr_nullstring(), check that the decoded string is terminated with
a zero byte and does not contain any internal zero bytes.

CVE-2015-8629:

In all versions of MIT krb5, an authenticated attacker can cause
kadmind to read beyond the end of allocated memory by sending a string
without a terminating zero byte. Information leakage may be possible
for an attacker with permission to modify the database.

CVSSv2 Vector: AV:N/AC:H/Au:S/C:P/I:N/A:N/E:POC/RL:OF/RC:C

(cherry picked from commit df17a1224a3406f57477bcd372c61e04c0e5a5bb)

https://github.com/krb5/krb5/commit/6e84bedf362f1d7f36d850774bbac6f3dee21ecd
Author: Greg Hudson <ghudson@mit.edu>
Committer: Tom Yu <tlyu@mit.edu>
Commit: 6e84bedf362f1d7f36d850774bbac6f3dee21ecd
Branch: krb5-1.13
src/lib/kadm5/kadm_rpc_xdr.c | 9 ++++++++-
1 files changed, 8 insertions(+), 1 deletions(-)