Network Block Device negotiation denial of service
|networkblock-negotiation-dos (67502)||Medium Risk|
Network Block Device is vulnerable to a denial of service, caused by a NULL pointer dereference in the negotiation phase. A remote attacker could exploit this vulnerability to cause negotiation to fail.
Denial of Service
Upgrade to the latest version of Network Block Device (1:2.9.22-1 or later), available from the Network Block Device Web site. See References.
- Debian Bug report logs - #627042: security flaw in 2.9.21.
- Network Block Device Web site: Network Block Device.
- BID-47884: Network Block Device Server NULL Pointer Dereference Denial of Service Vulnerability
- CVE-2011-1925: nbd-server.c in Network Block Device (nbd-server) 2.9.21 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) by causing a negotiation failure, as demonstrated by specifying a name for a non-existent export.
- OSVDB ID: 73401: Network Block Device ndb-server.c serveloop() Function NULL Dereference Remote DoS
- OSVDB ID: 73402: Network Block Device nbd-server.c negotiate() Function Negotiation Packet Handling Remote DoS
- SA44596: Network Block Device Two Denial of Service Vulnerabilities
- Network Block Device Network Block Device 2.9.21-1
May 17, 2011
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 the author/distributor (IBM Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.
For corrections or additions please email ignore thisxforceignore this@ignore thisus.ignore thisibm.comignore this
* According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.
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.