Discover Government News

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory                           GLSA 200409-09
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
                                            https://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

  Severity: High
     Title: MIT krb5: Multiple vulnerabilities
      Date: September 06, 2004
      Bugs: #62417
        ID: 200409-09

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Synopsis
=======
MIT krb5 contains several double-free vulnerabilities, potentially
allowing the execution of arbitrary code, as well as a denial of
service vulnerability.

Background
=========
MIT krb5 is the free implementation of the Kerberos network
authentication protocol by the Massachusetts Institute of Technology.

Affected packages
================
    -------------------------------------------------------------------
     Package             /  Vulnerable  /                   Unaffected
    -------------------------------------------------------------------
  1  app-crypt/mit-krb5       < 1.3.4                         >= 1.3.4

Description
==========
The implementation of the Key Distribution Center (KDC) and the MIT
krb5 library contain double-free vulnerabilities, making client
programs as well as application servers vulnerable.

The ASN.1 decoder library is vulnerable to a denial of service attack,
including the KDC.

Impact
=====
The double-free vulnerabilities could allow an attacker to execute
arbitrary code on a KDC host and hosts running krb524d or vulnerable
services. In the case of a KDC host, this can lead to a compromise of
the entire Kerberos realm. Furthermore, an attacker impersonating a
legitimate KDC or application server can potentially execute arbitrary
code on authenticating clients.

An attacker can cause a denial of service for a KDC or application
server and clients, the latter if impersonating a legitimate KDC or
application server.

Workaround
=========
There is no known workaround at this time.

Resolution
=========
All mit-krb5 users should upgrade to the latest stable version:

    # emerge sync

    # emerge -pv ">=app-crypt/mit-krb5-1.3.4"
    # emerge ">=app-crypt/mit-krb5-1.3.4"

References
=========
  [ 1 ] MIT krb5 Security Advisory 2004-002

http://web.mit.edu/kerberos/www/advisories/MITKRB5-SA-2004-002-dblfree.txt
  [ 2 ] MIT krb5 Security Advisory 2004-003

http://web.mit.edu/kerberos/www/advisories/MITKRB5-SA-2004-003-asn1.txt
  [ 3 ] CAN-2004-0642
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0642
  [ 4 ] CAN-2004-0643
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0643
  [ 5 ] CAN-2004-0644
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0644
  [ 6 ] CAN-2004-0772
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0772

Availability
===========
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

  https://security.gentoo.org/glsa/200409-09

Concerns?
========
Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
https://bugs.gentoo.org/.

License
======
Copyright 2004 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

https://creativecommons.org/licenses/by-sa/1.0/

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.4 (GNU/Linux)
Comment: Using GnuPG with Thunderbird - 
iD8DBQFBPCJbvcL1obalX08RAiGSAKCYME7MmffM2RlxVja0Dfj8tpcdtQCeJXfe
fuMJECEIhF8vkGnYuHZVusA=IHAg
-----END PGP SIGNATURE-----

Gentoo: GLSA-200409-09: MIT krb5: Multiple vulnerabilities

MIT krb5 contains several double-free vulnerabilities, potentially allowing the execution of arbitrary code, as well as a denial of service vulnerability

Summary

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Gentoo Linux Security Advisory                           GLSA 200409-09
                                            https://security.gentoo.org/

Severity: High Title: MIT krb5: Multiple vulnerabilities Date: September 06, 2004 Bugs: #62417 ID: 200409-09

Synopsis ======= MIT krb5 contains several double-free vulnerabilities, potentially allowing the execution of arbitrary code, as well as a denial of service vulnerability.
Background ========= MIT krb5 is the free implementation of the Kerberos network authentication protocol by the Massachusetts Institute of Technology.
Affected packages ================ ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 app-crypt/mit-krb5 < 1.3.4 >= 1.3.4
========== The implementation of the Key Distribution Center (KDC) and the MIT krb5 library contain double-free vulnerabilities, making client programs as well as application servers vulnerable.
The ASN.1 decoder library is vulnerable to a denial of service attack, including the KDC.
Impact ===== The double-free vulnerabilities could allow an attacker to execute arbitrary code on a KDC host and hosts running krb524d or vulnerable services. In the case of a KDC host, this can lead to a compromise of the entire Kerberos realm. Furthermore, an attacker impersonating a legitimate KDC or application server can potentially execute arbitrary code on authenticating clients.
An attacker can cause a denial of service for a KDC or application server and clients, the latter if impersonating a legitimate KDC or application server.
Workaround ========= There is no known workaround at this time.
Resolution ========= All mit-krb5 users should upgrade to the latest stable version:
# emerge sync
# emerge -pv ">=app-crypt/mit-krb5-1.3.4" # emerge ">=app-crypt/mit-krb5-1.3.4"
References ========= [ 1 ] MIT krb5 Security Advisory 2004-002
http://web.mit.edu/kerberos/www/advisories/MITKRB5-SA-2004-002-dblfree.txt [ 2 ] MIT krb5 Security Advisory 2004-003
http://web.mit.edu/kerberos/www/advisories/MITKRB5-SA-2004-003-asn1.txt [ 3 ] CAN-2004-0642 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0642 [ 4 ] CAN-2004-0643 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0643 [ 5 ] CAN-2004-0644 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0644 [ 6 ] CAN-2004-0772 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0772
Availability =========== This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
https://security.gentoo.org/glsa/200409-09
Concerns? ======== Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org/.
License ====== Copyright 2004 Gentoo Foundation, Inc; referenced text belongs to its owner(s).
The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license.
https://creativecommons.org/licenses/by-sa/1.0/
-----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (GNU/Linux) Comment: Using GnuPG with Thunderbird - iD8DBQFBPCJbvcL1obalX08RAiGSAKCYME7MmffM2RlxVja0Dfj8tpcdtQCeJXfe fuMJECEIhF8vkGnYuHZVusA=IHAg -----END PGP SIGNATURE-----

Resolution

References

Availability

Concerns

Severity

Synopsis

Background

Affected Packages

Impact

Workaround

Related News