Overly broad permissions can turn one compromised account into a much larger security problem. Learn how to reduce unnecessary access, review privileges, and apply least privilege across modern Linux systems. Review Linux Privileges×

Alerts This Week
Warning Icon 1 461
Alerts This Week
Warning Icon 1 461

Ubuntu 14.04 LTS USN-2343-1 Critical: NSS Denial of Service

ubuntu
Calendar Grey September 9, 2014
Scroller Ubuntu
A critical vulnerability identified in the NSS library is detailed in Ubuntu Security Notice USN-2343-1, highlighting risks related to possible system crashes and unauthorized code execution.
NSS could be made to crash or run programs as your login if it processed a specially crafted certificate.

Summary

NSS could be made to crash or run programs as your login if it processed a

specially crafted certificate.

Software Description:

- nss: Network Security Service library

Details:

Tyson Smith and Jesse Schwartzentruber discovered that NSS contained a race

condition when performing certificate validation. An attacker could use

this issue to cause NSS to crash, resulting in a denial of service, or

possibly execute arbitrary code.

Topics%20covered

Topics Covered

security advisory denial of service critical ubuntu nss certificate attack

Update Instructions

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

Ubuntu 14.04 LTS:
  libnss3                         2:3.15.4-1ubuntu7.1

Ubuntu 12.04 LTS:
  libnss3                         3.15.4-0ubuntu0.12.04.3

Ubuntu 10.04 LTS:
  libnss3-1d                      3.15.4-0ubuntu0.10.04.3

After a standard system update you need to restart any applications that
use NSS, such as Evolution and Chromium, to make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-2343-1

CVE-2014-1544

Severity
critical
Lowest
Low
Medium
High
Critical

September 09, 2014

Topics%20covered

Topics Covered

security advisory denial of service critical ubuntu nss certificate attack

Package Information

https://launchpad.net/ubuntu/+source/nss/2:3.15.4-1ubuntu7.1
https://launchpad.net/ubuntu/+source/nss/3.15.4-0ubuntu0.12.04.3
https://launchpad.net/ubuntu/+source/nss/3.15.4-0ubuntu0.10.04.3

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.