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Ubuntu 10.10 LTS USN-1155-1 Critical NBD Denial Of Service Issue

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Calendar Grey June 21, 2011
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Ubuntu Security Announcement USN-1256-2 addresses a vulnerability in the WPA component impacting multiple versions, outlining corrective actions and potential threats.
An attacker could send crafted input to NBD and cause it to crash or to run arbitrary programs.

Summary

An attacker could send crafted input to NBD and cause it to crash or to run

arbitrary programs.

Software Description:

- nbd: Network Block Device protocol

Details:

It was discovered that NBD incorrectly handled certain long requests. A

remote attacker could use this flaw to cause NBD to crash, resulting in

a denial of service, or possibly execute arbitrary code.

Topics%20covered

Topics Covered

security advisory denial of service critical Ubuntu network protocol NBD

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 10.10:
  nbd-server                      1:2.9.14-2ubuntu1.10.10.1

Ubuntu 10.04 LTS:
  nbd-server                      1:2.9.14-2ubuntu1.10.04.1

Ubuntu 8.04 LTS:
  nbd-server                      1:2.9.9-1ubuntu1.1

After a standard system update you need to restart NBD to make all the
necessary changes.

References

CVE-2011-0530

Severity
critical
Lowest
Low
Medium
High
Critical

June 21, 2011

Topics%20covered

Topics Covered

security advisory denial of service critical Ubuntu network protocol NBD

Package Information

https://launchpad.net/ubuntu/+source/nbd/1:2.9.14-2ubuntu1.10.10.1
https://launchpad.net/ubuntu/+source/nbd/1:2.9.14-2ubuntu1.10.04.1
https://launchpad.net/ubuntu/+source/nbd/1:2.9.9-1ubuntu1.1

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