dproxy UDP packet buffer overflow

dproxy-udp-packet-bo (33171)

High Risk

Description:

dproxy is vulnerable to a stack-based buffer overflow, caused by improper bounds checking by the dproxy.c. By sending a specially-crafted UDP packet containing an overly long string, a remote attacker could overflow a buffer and execute arbitrary code on the system with root privileges.

*CVSS:

Base Score:	10
Access Vector:	Remote
Access Complexity:	Low
Authentication:	Not Required
Confidentiality Impact:	Complete
Integrity Impact:	Complete
Availability Impact:	Complete
Temporal Score:	8.6
Exploitability:	Proof-Of-Concept
Remediation Level:	Unavailable
Report Confidence:	Uncorroborated

Consequences:

Gain Access

Remedy:

No remedy available as of December 2007.

References:

• Full-Disclosure Mailing List, Fri Mar 23 2007 - 08:43:31 CDT: dproxy - arbitrary code execution through stack buffer overflow vulnerability.
• SourceForge.net: dproxy - caching DNS proxy.
• BID-23112: DProxy Stack-Based Buffer-Overflow Vulnerability
• CVE-2007-1465: Stack-based buffer overflow in dproxy.c for dproxy 0.1 through 0.5 allows remote attackers to execute arbitrary code via a long DNS query packet to UDP port 53.
• SA24623: dproxy UDP Packet Buffer Overflow Vulnerability
• VUPEN/ADV-2007-1091: dproxy dproxy.c UDP Packet Handling Buffer Overflow and Code Execution Vulnerability

Platforms Affected:

• dproxy dproxy 0.1 - 0.5

Reported:

Mar 23, 2007

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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

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