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Alerts This Week
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Alerts This Week
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Ubuntu 2014: 2165-1 Critical: OpenSSL Network Exposure Threat

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Calendar Grey April 7, 2014
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OpenSSL flaws in Ubuntu may leak confidential keys. Perform an update immediately to protect your system.
OpenSSL could be made to expose sensitive information over the network, possibly including private keys.

Summary

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

possibly including private keys.

Software Description:

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

Details:

Neel Mehta discovered that OpenSSL incorrectly handled memory in the TLS

heartbeat extension. An attacker could use this issue to obtain up to 64k

of memory contents from the client or server, possibly leading to the

disclosure of private keys and other sensitive information. (CVE-2014-0160)

Yuval Yarom and Naomi Benger discovered that OpenSSL incorrectly handled

timing during swap operations in the Montgomery ladder implementation. An

attacker could use this issue to perform side-channel attacks and possibly

recover ECDSA nonces. (CVE-2014-0076)

Topics%20covered

Topics Covered

security advisory critical private key memory issue ubuntu openssl network exposure

Update Instructions

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

Ubuntu 13.10:
  libssl1.0.0                     1.0.1e-3ubuntu1.2

Ubuntu 12.10:
  libssl1.0.0                     1.0.1c-3ubuntu2.7

Ubuntu 12.04 LTS:
  libssl1.0.0                     1.0.1-4ubuntu5.12

After a standard system update you need to reboot your computer to make all
the necessary changes. Since this issue may have resulted in compromised
private keys, it is recommended to regenerate them.

References

https://ubuntu.com/security/notices/USN-2165-1

CVE-2014-0076, CVE-2014-0160

Severity
critical
Lowest
Low
Medium
High
Critical

April 07, 2014

Topics%20covered

Topics Covered

security advisory critical private key memory issue ubuntu openssl network exposure

Package Information

https://launchpad.net/ubuntu/+source/openssl/1.0.1e-3ubuntu1.2
https://launchpad.net/ubuntu/+source/openssl/1.0.1c-3ubuntu2.7
https://launchpad.net/ubuntu/+source/openssl/1.0.1-4ubuntu5.12

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