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Kerberos kadmind xprt->xp_auth Code Execution Vulnerability
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Secunia Advisory:
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SA23696
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Release Date:
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2007-01-10
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Popularity:
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8,936 views
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Critical:
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Highly critical
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Impact:
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DoS
System access
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| Software: | Kerberos 5.x
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| CVE reference: | CVE-2006-6143
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Description:
A vulnerability has been reported in Kerberos, which can potentially be exploited by malicious people to cause a DoS (Denial of Service) or to compromise a vulnerable system.
The vulnerability is caused due to an error in the handling of xprt->xp_auth pointers when freeing structures in memory. This can be exploited to crash the daemon or execute arbitrary code via a specially crafted kerberos packet.
The vulnerability is reported in the following versions:
* krb5-1.4 through krb5-1.4.4
* krb5-1.5 through krb5-1.5.1
Other versions may also be affected.
Solution:
Apply patch.
http://web.mit.edu/kerberos/advisories/2006-002-patch.txt
Provided and/or discovered by:
The vendor credits Andrew Korty from Indiana University.
Original Advisory:
http://web.mit.edu/kerberos/www/advisories/MITKRB5-SA-2006-002-rpc.txt
Other References:
US-CERT VU#481564:
http://www.kb.cert.org/vuls/id/481564
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About this Secunia Advisory
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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