medium
6.5
Advisory Published
CVE Published
Updated

CVE-2016-5548

First published: Tue Jan 17 2017(Updated: )

A covert timing channel flaw was found in the DSA implementation in the Libraries component of OpenJDK. A remote attacker able to make a Java application generate DSA signatures on demand could possibly use this flaw to extract certain information about the used key via a timing side channel.

Credit: secalert_us@oracle.com

Affected SoftwareAffected VersionHow to fix
Oracle JDK 6=1.6-update_131
Oracle JDK 6=1.7-update_121
Oracle JDK 6=1.8-update_111
Oracle JDK 6=1.8-update_112
Oracle Java Runtime Environment (JRE)=1.6-update_131
Oracle Java Runtime Environment (JRE)=1.7-update_121
Oracle Java Runtime Environment (JRE)=1.8-update_111
Oracle Java Runtime Environment (JRE)=1.8-update_112
debian/openjdk-8
8u442-ga-2

Remedy

http://www.oracle.com/technetwork/security-advisory/cpujan2017-2881727.html

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2016-5548?

    CVE-2016-5548 is classified as a medium-severity vulnerability due to the risk of information disclosure via timing attacks.

  • How do I fix CVE-2016-5548?

    To fix CVE-2016-5548, update to the latest patched version of OpenJDK or Oracle JDK/JRE as specified in the vendor advisories.

  • Which versions are affected by CVE-2016-5548?

    CVE-2016-5548 affects OpenJDK 8u432-b06-2 and several specific versions of Oracle JDK and JRE including 1.6-update_131, 1.7-update_121, and 1.8-update_111 and 1.8-update_112.

  • Can CVE-2016-5548 be exploited remotely?

    Yes, CVE-2016-5548 can be exploited remotely if an attacker can induce a Java application to generate DSA signatures.

  • What impact does CVE-2016-5548 have on security?

    CVE-2016-5548 poses a risk of exposure of sensitive cryptographic key information through a covert timing channel.

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