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GNU Radius SNMP String Length Denial of Service Vulnerability
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Secunia Advisory:
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SA12552
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Release Date:
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2004-09-15
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Critical:
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Less critical
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Impact:
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DoS
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Where:
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From local network
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Solution Status:
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Vendor Patch
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| Software: | GNU Radius 1.x
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| | CVE reference: | CVE-2004-0849 (Secunia mirror)
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Description:
A vulnerability has been reported in GNU Radius, which can be exploited by malicious people to cause a DoS (Denial of Service).
The vulnerability is caused due to an input validation error within the "asn_decode_string()" function. This can be exploited to cause an integer overflow and thereby crash the radius daemon by sending a specially crafted SNMP datagram to a vulnerable system.
Successful exploitation requires that radiusd has been compiled with the "--enable-snmp" option (not default setting).
The vulnerability has been reported in versions 1.1 and 1.2.
Solution:
The vulnerability has been fixed in maintenance release 1.2.94.
http://www.gnu.org/software/radius/radius.html#downloading
Disable SNMP support.
Provided and/or discovered by:
Discovered by anonymous person and reported via iDEFENSE.
Original Advisory:
http://www.idefense.com/application/poi/display?id=141&type=vulnerabilities
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
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3 Related Secunia Security Advisories
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1. GNU Radius "sqllog()" Format String Vulnerability
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2. GNU Radius SNMP Invalid OID Denial of Service Vulnerability
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3. GNU Radius Denial of Service Vulnerability
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