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CVE-2002-2368: Nec Socks 5: Buffer overflow

CVE-2002-2368 has a CVSS v2 base score of 10.0 (the maximum on that scale) and affects Nec Socks 5. Per its scoring, it can be exploited over the network, without authentication. The scored impact on confidentiality, integrity and availability is the highest available.

Vulnerability description

Multiple buffer overflows in NEC SOCKS5 1.0 r11 and earlier allow remote attackers to cause a denial of service and possibly execute arbitrary code via a long username to (1) the GetString function in proxy.c for the SOCKS5 module or (2) the HandleS4Connection function in proxy.c for the SOCKS4 module.

Severity breakdown

CVSS v2.0 10.0: AV:N/AC:L/Au:N/C:C/I:C/A:C

• Access vector: Network. Exploitable remotely over the network.
• Access complexity: Low. No special conditions are required.
• Authentication: None. No authentication is needed.
• Confidentiality impact: Complete. Total information disclosure.
• Integrity impact: Complete. Total loss of integrity.
• Availability impact: Complete. Total shutdown of the component.

Underlying weakness

CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary.

Affected products

• Nec Socks 5: up to and including 1.0r11

References

• http://archives.neohapsis.com/archives/bugtraq/2002-07/0033.html
• http://www.iss.net/security_center/static/9485.php
• http://www.securityfocus.com/bid/5145
• http://www.securityfocus.com/bid/5147