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March 2013

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Subject:
Security ERRATA Moderate: krb5 on SL6.x i386/x86_64
From:
Pat Riehecky <[log in to unmask]>
Reply To:
Pat Riehecky <[log in to unmask]>
Date:
Mon, 18 Mar 2013 14:55:21 -0500
Content-Type:
text/plain
Parts/Attachments:
text/plain (50 lines) 
Synopsis:          Moderate: krb5 security update
Issue Date:        2013-03-18
CVE Numbers:       CVE-2013-1415
                    CVE-2012-1016
--

When a client attempts to use PKINIT to obtain credentials from the KDC,
the client can specify, using an issuer and serial number, which of the
KDC's possibly-many certificates the client has in its possession, as a
hint to the KDC that it should use the corresponding key to sign its
response. If that specification was malformed, the KDC could attempt to
dereference a NULL pointer and crash. (CVE-2013-1415)

When a client attempts to use PKINIT to obtain credentials from the KDC,
the client will typically format its request to conform to the
specification published in RFC 4556. For interoperability reasons, clients
and servers also provide support for an older, draft version of that
specification. If a client formatted its request to conform to this older
version of the specification, with a non-default key agreement option, it
could cause the KDC to attempt to dereference a NULL pointer and crash.
(CVE-2012-1016)

After installing the updated packages, the krb5kdc daemon will be
restarted automatically.
--

SL6
   x86_64
     krb5-debuginfo-1.10.3-10.el6_4.1.i686.rpm
     krb5-debuginfo-1.10.3-10.el6_4.1.x86_64.rpm
     krb5-libs-1.10.3-10.el6_4.1.i686.rpm
     krb5-libs-1.10.3-10.el6_4.1.x86_64.rpm
     krb5-pkinit-openssl-1.10.3-10.el6_4.1.x86_64.rpm
     krb5-workstation-1.10.3-10.el6_4.1.x86_64.rpm
     krb5-devel-1.10.3-10.el6_4.1.i686.rpm
     krb5-devel-1.10.3-10.el6_4.1.x86_64.rpm
     krb5-server-1.10.3-10.el6_4.1.x86_64.rpm
     krb5-server-ldap-1.10.3-10.el6_4.1.i686.rpm
     krb5-server-ldap-1.10.3-10.el6_4.1.x86_64.rpm
   i386
     krb5-debuginfo-1.10.3-10.el6_4.1.i686.rpm
     krb5-libs-1.10.3-10.el6_4.1.i686.rpm
     krb5-pkinit-openssl-1.10.3-10.el6_4.1.i686.rpm
     krb5-workstation-1.10.3-10.el6_4.1.i686.rpm
     krb5-devel-1.10.3-10.el6_4.1.i686.rpm
     krb5-server-1.10.3-10.el6_4.1.i686.rpm
     krb5-server-ldap-1.10.3-10.el6_4.1.i686.rpm

- Scientific Linux Development Team

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