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MIT Kerberos Telnet Client Buffer Overflow Vulnerabilities
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Secunia Advisory:
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SA14745
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Release Date:
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2005-03-29
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Last Update:
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2005-04-04
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Popularity:
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20,427 views
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Critical:
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Moderately critical
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Impact:
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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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Secunia CVSS-2 Score:
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| Advisory Content (Page 1 of 3) | [ 1 ] [ 2 ] [ 3 ] | |
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Description:
Gaël Delalleau has reported two vulnerabilities in Kerberos V5, which can be exploited by malicious people to compromise a vulnerable system.
1) A boundary error in the "slc_add_reply()" function in the included telnet client when handling LINEMODE suboptions can be exploited to cause buffer overflow via a specially crafted reply containing a large number of SLC (Set Local Character) commands.
2) A boundary error in the "env_opt_add()" function in the included telnet client when handling NEW-ENVIRON suboptions can be exploited to cause a heap-based buffer overflow via a specially crafted reply containing a large number of characters that need escaping.
Successful exploitation allows execution of arbitrary code, but requires that a user connects to a malicious server with the vulnerable telnet client.
The vulnerabilities affect versions up to and including release krb5-1.4.
Change Page:
[ 1 ] [ 2 ] [ 3 ]
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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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