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Sicherheit: Mehrere Probleme in krb5
Aktuelle Meldungen Distributionen
Name: Mehrere Probleme in krb5
ID: MDVSA-2015:069
Distribution: Mandriva
Plattformen: Mandriva Business Server 1.0, Mandriva Business Server 2.0
Datum: Fr, 27. März 2015, 18:39
Referenzen: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-5352
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-5355
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-9421
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-9422
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-9423

Originalnachricht

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_______________________________________________________________________

Mandriva Linux Security Advisory MDVSA-2015:069
http://www.mandriva.com/en/support/security/
_______________________________________________________________________

Package : krb5
Date : March 27, 2015
Affected: Business Server 1.0, Business Server 2.0
_______________________________________________________________________

Problem Description:

Multiple vulnerabilities has been discovered and corrected in krb5:

The krb5_gss_process_context_token function in
lib/gssapi/krb5/process_context_token.c in the libgssapi_krb5 library
in MIT Kerberos 5 (aka krb5) through 1.11.5, 1.12.x through 1.12.2,
and 1.13.x before 1.13.1 does not properly maintain security-context
handles, which allows remote authenticated users to cause a denial of
service (use-after-free and double free, and daemon crash) or possibly
execute arbitrary code via crafted GSSAPI traffic, as demonstrated
by traffic to kadmind (CVE-2014-5352).

MIT Kerberos 5 (aka krb5) through 1.13.1 incorrectly expects that
a krb5_read_message data field is represented as a string ending
with a '\0' character, which allows remote attackers to (1)
cause a
denial of service (NULL pointer dereference) via a zero-byte version
string or (2) cause a denial of service (out-of-bounds read) by
omitting the '\0' character, related to
appl/user_user/server.c and
lib/krb5/krb/recvauth.c (CVE-2014-5355).

The auth_gssapi_unwrap_data function in lib/rpc/auth_gssapi_misc.c
in MIT Kerberos 5 (aka krb5) through 1.11.5, 1.12.x through 1.12.2,
and 1.13.x before 1.13.1 does not properly handle partial XDR
deserialization, which allows remote authenticated users to cause
a denial of service (use-after-free and double free, and daemon
crash) or possibly execute arbitrary code via malformed XDR data,
as demonstrated by data sent to kadmind (CVE-2014-9421).

The check_rpcsec_auth function in kadmin/server/kadm_rpc_svc.c in
kadmind in MIT Kerberos 5 (aka krb5) through 1.11.5, 1.12.x through
1.12.2, and 1.13.x before 1.13.1 allows remote authenticated users to
bypass a kadmin/* authorization check and obtain administrative access
by leveraging access to a two-component principal with an initial
kadmind substring, as demonstrated by a ka/x principal (CVE-2014-9422).

The svcauth_gss_accept_sec_context function in lib/rpc/svc_auth_gss.c
in MIT Kerberos 5 (aka krb5) 1.11.x through 1.11.5, 1.12.x through
1.12.2, and 1.13.x before 1.13.1 transmits uninitialized interposer
data to clients, which allows remote attackers to obtain sensitive
information from process heap memory by sniffing the network for data
in a handle field (CVE-2014-9423).

The updated packages provides a solution for these security issues.
_______________________________________________________________________

References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-5352
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-5355
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-9421
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-9422
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-9423
_______________________________________________________________________

Updated Packages:

Mandriva Business Server 1/X86_64:
d16c14ab1f1118f6a45ca8b10946592d mbs1/x86_64/krb5-1.9.2-3.9.mbs1.x86_64.rpm
69550d4ca7209fd770d12f860dc79384
mbs1/x86_64/krb5-pkinit-openssl-1.9.2-3.9.mbs1.x86_64.rpm
9efe0acd6d6c74fa2a909e9a9ffde20d
mbs1/x86_64/krb5-server-1.9.2-3.9.mbs1.x86_64.rpm
11a94275292d6274d1ed4f97a1130f42
mbs1/x86_64/krb5-server-ldap-1.9.2-3.9.mbs1.x86_64.rpm
fcc1186dd10cb14a2dc53f18505692b6
mbs1/x86_64/krb5-workstation-1.9.2-3.9.mbs1.x86_64.rpm
6066de4cc667f3c1131d5aefd9e6d575
mbs1/x86_64/lib64krb53-1.9.2-3.9.mbs1.x86_64.rpm
f2fc9461926ca7002dffbcc799e6050a
mbs1/x86_64/lib64krb53-devel-1.9.2-3.9.mbs1.x86_64.rpm
0d75002a9a47138a816f44dd54f5d988 mbs1/SRPMS/krb5-1.9.2-3.9.mbs1.src.rpm

Mandriva Business Server 2/X86_64:
d1d41c48bba7fc797361b0b0c1dc3cac mbs2/x86_64/krb5-1.12.2-5.2.mbs2.x86_64.rpm
36f8ec3d0e0c417dcfa4a6dd4944511f
mbs2/x86_64/krb5-pkinit-openssl-1.12.2-5.2.mbs2.x86_64.rpm
db5ca7ca6bcd12a84a80e9f9e87989b7
mbs2/x86_64/krb5-server-1.12.2-5.2.mbs2.x86_64.rpm
7733ebaaa61857f6603c3b83e646f840
mbs2/x86_64/krb5-server-ldap-1.12.2-5.2.mbs2.x86_64.rpm
b44248c417e0a7fdd424608fa14d6cb6
mbs2/x86_64/krb5-workstation-1.12.2-5.2.mbs2.x86_64.rpm
35c0bb1be4397c3a0b35e47b0b19ce48
mbs2/x86_64/lib64krb53-1.12.2-5.2.mbs2.x86_64.rpm
1bd6f285438bd3c467ba6a31f9637ad1
mbs2/x86_64/lib64krb53-devel-1.12.2-5.2.mbs2.x86_64.rpm
2cbc3f6dc36592f29d219032fd1c2a5b mbs2/SRPMS/krb5-1.12.2-5.2.mbs2.src.rpm
_______________________________________________________________________

To upgrade automatically use MandrivaUpdate or urpmi. The verification
of md5 checksums and GPG signatures is performed automatically for you.

All packages are signed by Mandriva for security. You can obtain the
GPG public key of the Mandriva Security Team by executing:

gpg --recv-keys --keyserver pgp.mit.edu 0x22458A98

You can view other update advisories for Mandriva Linux at:

http://www.mandriva.com/en/support/security/advisories/

If you want to report vulnerabilities, please contact

security_(at)_mandriva.com
_______________________________________________________________________

Type Bits/KeyID Date User ID
pub 1024D/22458A98 2000-07-10 Mandriva Security Team
<security*mandriva.com>
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_______________________________________________________
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_______________________________________________________


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