Quantum Secular Labs / Blog / Advisories

CVE-2002-2250: Sybase Adaptive Server: Buffer overflow

CVE-2002-2250 has a CVSS v2 base score of 10.0 (the maximum on that scale) and affects Sybase Adaptive Server. 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 Sybase Adaptive Server 12.0 and 12.5 allow remote attackers to execute arbitrary code via (1) a long parameter to the xp_freedll extended stored procedure or (2) a long database name argument to the DBCC CHECKVERIFY function.

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

Sybase Adaptive Server: 12.0; 12.5