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Sicherheit: Zwei Probleme in krb5
Aktuelle Meldungen Distributionen
Name: Zwei Probleme in krb5
ID: FEDORA-2013-3147
Distribution: Fedora
Plattformen: Fedora 18
Datum: Fr, 22. März 2013, 23:44
Referenzen: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-1016
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-1415
Applikationen: MIT Kerberos

Originalnachricht

Name        : krb5
Product : Fedora 18
Version : 1.10.3
Release : 14.fc18
URL : http://web.mit.edu/kerberos/www/
Summary : The Kerberos network authentication system
Description :
Kerberos V5 is a trusted-third-party network authentication system,
which can improve your network's security by eliminating the insecure
practice of sending passwords over the network in unencrypted form.

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Update Information:

This update incorporates the upstream fix for possible NULL-pointer
dereferences which could occur if a client sent a malformed PKINIT request to a KDC (CVE-2013-1415), or if a client sent a draft9 PKINIT request to a KDC (CVE-2012-1016).
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ChangeLog:

* Tue Mar 5 2013 Nalin Dahyabhai <nalin@redhat.com> 1.10.3-14
- add patch to avoid dereferencing a NULL pointer in the KDC when handling a
draft9 PKINIT request (#917841, CVE-2012-1016)
* Thu Feb 28 2013 Nalin Dahyabhai <nalin@redhat.com> 1.10.3-13
- fix a memory leak when acquiring credentials using a keytab (RT#7586,
#911110)
* Mon Feb 25 2013 Nalin Dahyabhai <nalin@redhat.com> 1.10.3-12
- incorporate upstream patch to fix a NULL pointer dereference when the client
supplies an otherwise-normal-looking PKINIT request (CVE-2013-1415, #914756)
* Mon Jan 7 2013 Nalin Dahyabhai <nalin@redhat.com> 1.10.3-11
- make -server conflict with older versions of SELinux policy that didn't
allow us to use eventfds, which libverto's backend may depend on in order
to properly shut down a multi-worker KDC (#871524)
* Thu Dec 13 2012 Nalin Dahyabhai <nalin@redhat.com> 1.10.3-10
- libkdb_ldap: add a workaround to keep the KDC from attempting to write to an
entry's krbLastAdminUnlock attribute on every AS request (#860759,
RT#7502)
* Tue Dec 11 2012 Nalin Dahyabhai <nalin@redhat.com> 1.10.3-9
- when building with our bundled copy of libverto, package it in with -libs
rather than with -server (#886049)
* Mon Dec 10 2012 Nalin Dahyabhai <nalin@redhat.com> 1.10.3-8
- untag a couple of other patches which don't strictly need to apply during
%{?_rawbuild} builds (more of #874177)
* Wed Oct 17 2012 Nalin Dahyabhai <nalin@redhat.com> 1.10.3-7
- tag a couple of other patches which we still need to be applied during
%{?_rawbuild} builds (zmraz, #874177)
* Tue Sep 25 2012 Nalin Dahyabhai <nalin@redhat.com> 1.10.3-6
- actually pull up the patch for RT#7063, and not some other ticket (#773496)
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References:

[ 1 ] Bug #914749 - CVE-2013-1415 krb5: PKINIT null pointer deref leads to
DoS (pkinit_check_kdc_pkid())
https://bugzilla.redhat.com/show_bug.cgi?id=914749
[ 2 ] Bug #917840 - CVE-2012-1016 krb5: PKINIT null pointer deref leads to
DoS
https://bugzilla.redhat.com/show_bug.cgi?id=917840
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This update can be installed with the "yum" update program. Use
su -c 'yum update krb5' at the command line.
For more information, refer to "Managing Software with yum",
available at http://docs.fedoraproject.org/yum/.

All packages are signed with the Fedora Project GPG key. More details on the
GPG keys used by the Fedora Project can be found at
https://fedoraproject.org/keys
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