ZDI-09-067: Novell NetWare NFS Portmapper and RPC Module Stack Overflow Vulnerability

Type securityvulns
Reporter Securityvulns
Modified 2009-10-04T00:00:00


ZDI-09-067: Novell NetWare NFS Portmapper and RPC Module Stack Overflow Vulnerability http://www.zerodayinitiative.com/advisories/ZDI-09-067 September 30, 2009

-- Affected Vendors: Novell

-- Affected Products: Novell Netware

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-- Vulnerability Details: This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Novell Netware NFS Portmapper daemon. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the processing of CALLIT RPC calls. The vulnerable daemon explicitly trusts a length field when receiving data which is later copied into a stack buffer, potentially resulting in a stack overflow. Successful exploitation of this vulnerability can lead to remote code execution under the context of the daemon.

-- Vendor Response: Novell has issued an update to correct this vulnerability. More details can be found at:


-- Disclosure Timeline: 2009-06-23 - Vulnerability reported to vendor 2009-09-30 - Coordinated public release of advisory

-- Credit: This vulnerability was discovered by: * Nick DeBaggis

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