[ GLSA 200707-11 ] MIT Kerberos 5: Arbitrary remote code execution

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  Severity: High
     Title: MIT Kerberos 5: Arbitrary remote code execution
      Date: July 25, 2007
      Bugs: #183338
        ID: 200707-11

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Synopsis

Multiple vulnerabilities in MIT Kerberos 5 could potentially result in remote code execution with root privileges by unauthenticated users.

Background

MIT Kerberos 5 is a suite of applications that implement the Kerberos network protocol.

Affected packages

     Package             /  Vulnerable  /                   Unaffected
    -------------------------------------------------------------------
  1  app-crypt/mit-krb5     < 1.5.2-r3                     >= 1.5.2-r3

Description

kadmind is affected by multiple vulnerabilities in the RPC library shipped with MIT Kerberos 5. It fails to properly handle zero-length RPC credentials (CVE-2007-2442) and the RPC library can write past the end of the stack buffer (CVE-2007-2443). Furthermore kadmind fails to do proper bounds checking (CVE-2007-2798).

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Impact

A remote unauthenticated attacker could exploit these vulnerabilities to execute arbitrary code with root privileges.

Workaround

There is no known workaround at this time.

Resolution

All MIT Kerberos 5 users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=app-crypt/mit-krb5-1.5.2-r3"

References

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  [ 1 ] CVE-2007-2442
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-2442   [ 2 ] CVE-2007-2443
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-2443   [ 3 ] CVE-2007-2798
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-2798

Availability

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

  http://security.gentoo.org/glsa/glsa-200707-11.xml

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 http://bugs.gentoo.org.

License

Copyright 2007 Gentoo Foundation, Inc; referenced text belongs to its owner(s).

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