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 1 525
Alerts This Week
Warning Icon 1 525

Ubuntu 15.10: USN-2883-1 Important Security Update for OpenSSL Network Leak

ubuntu
Calendar Grey January 28, 2016
Scroller Ubuntu
A flaw in OpenSSL reveals confidential information across networks; ensure your Ubuntu installation is current to improve protections.
OpenSSL could be made to expose sensitive information over the network.

Summary

OpenSSL could be made to expose sensitive information over the network.

Software Description:

- openssl: Secure Socket Layer (SSL) cryptographic library and tools

Details:

Antonio Sanso discovered that OpenSSL reused the same private DH exponent

for the life of a server process when configured with a X9.42 style

parameter file. This could allow a remote attacker to possibly discover the

server's private DH exponent when being used with non-safe primes.

Topics%20covered

Topics Covered

security advisory information leak ubuntu openssl network exposure

Update Instructions

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

Ubuntu 15.10:
  libssl1.0.0                     1.0.2d-0ubuntu1.3

After a standard system update you need to reboot your computer to make
all the necessary changes.

References

https://ubuntu.com/security/notices/USN-2883-1

CVE-2016-0701

Severity
important
Lowest
Low
Medium
High
Critical

January 28, 2016

Topics%20covered

Topics Covered

security advisory information leak ubuntu openssl network exposure

Package Information

https://launchpad.net/ubuntu/+source/openssl/1.0.2d-0ubuntu1.3

Get the latest News and Insights

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