Bug 1471851 - (CVE-2017-10115) CVE-2017-10115 OpenJDK: DSA implementation timing attack (JCE, 8175106)
CVE-2017-10115 OpenJDK: DSA implementation timing attack (JCE, 8175106)
Status: NEW
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
impact=moderate,public=20170718,repor...
: Security
Depends On:
Blocks: 1466515
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Reported: 2017-07-17 10:32 EDT by Tomas Hoger
Modified: 2017-08-15 16:00 EDT (History)
4 users (show)

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A covert timing channel flaw was found in the DSA implementation in the JCE 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.
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Description Tomas Hoger 2017-07-17 10:32:04 EDT
A covert timing channel flaw was found in the DSA implementation in the JCE 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.

Note that the fix for this issue reverts the fix for CVE-2016-5548 (see bug 1413920) and uses different approach to implement blinding of the DSA operations.
Comment 1 Tomas Hoger 2017-07-18 15:54:08 EDT
Public now via Oracle CPU July 2017:

http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html#AppendixJAVA

The issue was fixed in Oracle JDK 8u141, 7u151, and 6u161.
Comment 2 Tomas Hoger 2017-07-19 10:21:29 EDT
OpenJDK-8 upstream commit:

http://hg.openjdk.java.net/jdk8u/jdk8u/jdk/rev/3c8ea47635b6
Comment 3 errata-xmlrpc 2017-07-20 12:01:15 EDT
This issue has been addressed in the following products:

  Oracle Java for Red Hat Enterprise Linux 6
  Oracle Java for Red Hat Enterprise Linux 7

Via RHSA-2017:1792 https://access.redhat.com/errata/RHSA-2017:1792
Comment 4 errata-xmlrpc 2017-07-20 12:03:30 EDT
This issue has been addressed in the following products:

  Oracle Java for Red Hat Enterprise Linux 7
  Oracle Java for Red Hat Enterprise Linux 6

Via RHSA-2017:1791 https://access.redhat.com/errata/RHSA-2017:1791
Comment 5 errata-xmlrpc 2017-07-20 12:19:22 EDT
This issue has been addressed in the following products:

  Oracle Java for Red Hat Enterprise Linux 7
  Oracle Java for Red Hat Enterprise Linux 6

Via RHSA-2017:1790 https://access.redhat.com/errata/RHSA-2017:1790
Comment 6 errata-xmlrpc 2017-07-20 13:51:11 EDT
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6
  Red Hat Enterprise Linux 7

Via RHSA-2017:1789 https://access.redhat.com/errata/RHSA-2017:1789
Comment 7 errata-xmlrpc 2017-08-07 11:07:41 EDT
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6
  Red Hat Enterprise Linux 7

Via RHSA-2017:2424 https://access.redhat.com/errata/RHSA-2017:2424
Comment 8 errata-xmlrpc 2017-08-14 05:50:06 EDT
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6 Supplementary
  Red Hat Enterprise Linux 7 Supplementary

Via RHSA-2017:2469 https://access.redhat.com/errata/RHSA-2017:2469
Comment 9 errata-xmlrpc 2017-08-15 16:00:02 EDT
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6 Supplementary
  Red Hat Enterprise Linux 7 Supplementary

Via RHSA-2017:2481 https://access.redhat.com/errata/RHSA-2017:2481

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