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CVE-2010-1039: HP Nfs/Oncplus: Remote code execution

CVE-2010-1039 has a CVSS v2 base score of 10.0 (the maximum on that scale) and affects HP Nfs/Oncplus. 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

Format string vulnerability in the _msgout function in rpc.pcnfsd in IBM AIX 6.1, 5.3, and earlier; IBM VIOS 2.1, 1.5, and earlier; NFS/ONCplus B.11.31_09 and earlier on HP HP-UX B.11.11, B.11.23, and B.11.31; and SGI IRIX 6.5 allows remote attackers to execute arbitrary code via an RPC request containing format string specifiers in an invalid directory name.

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-134: Use of Externally-Controlled Format String

The product uses a function that accepts a format string as an argument, but the format string originates from an external source.

Affected products

HP Nfs/Oncplus: up to and including b.11.31_09
IBM AIX: up to and including 5.3; 1.2.1; 1.3; 2.2.1; 3.1; 3.2; 3.2.0; 3.2.4; 3.2.5; 4; 4.0; 4.1
IBM Vios: up to and including 1.5; 1.4; 2.1
Sgi Irix: 6.5