Patch  oval:com.redhat.rhsa:def:20050567
RHSA-2005:567: krb5 security update (Important)  

Kerberos is a networked authentication system that uses a trusted third party (a KDC) to authenticate clients and servers to each other.
A double-free flaw was found in the krb5_recvauth() routine which may be triggered by a remote unauthenticated attacker. Red Hat Enterprise Linux 4 contains checks within glibc that detect double-free flaws. Therefore, on Red Hat Enterprise Linux 4 successful exploitation of this issue can only lead to a denial of service (KDC crash). The Common Vulnerabilities and Exposures project assigned the name CAN-2005-1689 to this issue.
Daniel Wachdorf discovered a single byte heap overflow in the krb5_unparse_name() function, part of krb5-libs. Sucessful exploitation of this flaw would lead to a denial of service (crash). To trigger this flaw an attacker would need to have control of a kerberos realm that shares a cross-realm key with the target, making exploitation of this flaw unlikely. (CAN-2005-1175).
Daniel Wachdorf also discovered that in error conditions that may occur in response to correctly-formatted client requests, the Kerberos 5 KDC may attempt to free uninitialized memory. This could allow a remote attacker to cause a denial of service (KDC crash) (CAN-2005-1174).
Gaƫl Delalleau discovered an information disclosure issue in the way some telnet clients handle messages from a server. An attacker could construct a malicious telnet server that collects information from the environment of any victim who connects to it using the Kerberos-aware telnet client (CAN-2005-0488).
The rcp protocol allows a server to instruct a client to write to arbitrary files outside of the current directory. This could potentially cause a security issue if a user uses the Kerberos-aware rcp to copy files from a malicious server (CAN-2004-0175).
All users of krb5 should update to these erratum packages, which contain backported patches to correct these issues. Red Hat would like to thank the MIT Kerberos Development Team for their responsible disclosure of these issues.
Create Date: 2005-07-12 Last Update Date: 2007-01-26

Affected Platforms/Products

Affected Products (CPE + CVE references)
Platforms: unix (from OVAL definitions)
  • Red Hat Enterprise Linux 4

References

Criteria

The patch should be installed
IF : All of the following are true
IF : Red Hat Enterprise Linux 4 is installed
Linux : RPM Test :  Red Hat Enterprise Linux 4 is installed 
At least one of the objects listed below must exist on the system (Existence check)
Unknown object oval:com.redhat.rhsa:obj:20030315001 (Object depth limit may be exceeded) !!!
version pattern match ^4[^\d]
linux : rpminfo_state 
IF : Any one of the following are true
IF : All of the following are true
IF : krb5-server is earlier than 0:1.3.4-17
Linux : RPM Test :  krb5-server is earlier than 0:1.3.4-17 
At least one of the objects listed below must exist on the system (Existence check)
Unknown object oval:com.redhat.rhsa:obj:20040236005 (Object depth limit may be exceeded) !!!
RPM Version less than 0:1.3.4-17 (datatype=evr_string)
linux : rpminfo_state 
IF : krb5-server is signed with Red Hat master key
Linux : RPM Test :  krb5-server is signed with Red Hat master key 
At least one of the objects listed below must exist on the system (Existence check)
Unknown object oval:com.redhat.rhsa:obj:20040236005 (Object depth limit may be exceeded) !!!
signature_keyid equals 219180cddb42a60e
linux : rpminfo_state 
IF : All of the following are true
IF : krb5 is earlier than 0:1.3.4-17
Linux : RPM Test :  krb5 is earlier than 0:1.3.4-17 
At least one of the objects listed below must exist on the system (Existence check)
Unknown object oval:com.redhat.rhsa:obj:20040236002 (Object depth limit may be exceeded) !!!
RPM Version less than 0:1.3.4-17 (datatype=evr_string)
linux : rpminfo_state 
IF : krb5 is signed with Red Hat master key
Linux : RPM Test :  krb5 is signed with Red Hat master key 
At least one of the objects listed below must exist on the system (Existence check)
Unknown object oval:com.redhat.rhsa:obj:20040236002 (Object depth limit may be exceeded) !!!
signature_keyid equals 219180cddb42a60e
linux : rpminfo_state 
IF : All of the following are true
IF : krb5-libs is earlier than 0:1.3.4-17
Linux : RPM Test :  krb5-libs is earlier than 0:1.3.4-17 
At least one of the objects listed below must exist on the system (Existence check)
Unknown object oval:com.redhat.rhsa:obj:20040236004 (Object depth limit may be exceeded) !!!
RPM Version less than 0:1.3.4-17 (datatype=evr_string)
linux : rpminfo_state 
IF : krb5-libs is signed with Red Hat master key
Linux : RPM Test :  krb5-libs is signed with Red Hat master key 
At least one of the objects listed below must exist on the system (Existence check)
Unknown object oval:com.redhat.rhsa:obj:20040236004 (Object depth limit may be exceeded) !!!
signature_keyid equals 219180cddb42a60e
linux : rpminfo_state 
IF : All of the following are true
IF : krb5-devel is earlier than 0:1.3.4-17
Linux : RPM Test :  krb5-devel is earlier than 0:1.3.4-17 
At least one of the objects listed below must exist on the system (Existence check)
Unknown object oval:com.redhat.rhsa:obj:20040236003 (Object depth limit may be exceeded) !!!
RPM Version less than 0:1.3.4-17 (datatype=evr_string)
linux : rpminfo_state 
IF : krb5-devel is signed with Red Hat master key
Linux : RPM Test :  krb5-devel is signed with Red Hat master key 
At least one of the objects listed below must exist on the system (Existence check)
Unknown object oval:com.redhat.rhsa:obj:20040236003 (Object depth limit may be exceeded) !!!
signature_keyid equals 219180cddb42a60e
linux : rpminfo_state 
IF : All of the following are true
IF : krb5-workstation is earlier than 0:1.3.4-17
Linux : RPM Test :  krb5-workstation is earlier than 0:1.3.4-17 
At least one of the objects listed below must exist on the system (Existence check)
Unknown object oval:com.redhat.rhsa:obj:20040236006 (Object depth limit may be exceeded) !!!
RPM Version less than 0:1.3.4-17 (datatype=evr_string)
linux : rpminfo_state 
IF : krb5-workstation is signed with Red Hat master key
Linux : RPM Test :  krb5-workstation is signed with Red Hat master key 
At least one of the objects listed below must exist on the system (Existence check)
Unknown object oval:com.redhat.rhsa:obj:20040236006 (Object depth limit may be exceeded) !!!
signature_keyid equals 219180cddb42a60e
linux : rpminfo_state 

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