Bug 1391818 (CVE-2016-8635) - CVE-2016-8635 nss: small-subgroups attack flaw
Summary: CVE-2016-8635 nss: small-subgroups attack flaw
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2016-8635
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks: 1380228 1391819
TreeView+ depends on / blocked
 
Reported: 2016-11-04 06:40 UTC by Huzaifa S. Sidhpurwala
Modified: 2021-02-17 03:04 UTC (History)
7 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
It was found that Diffie Hellman Client key exchange handling in NSS was vulnerable to small subgroup confinement attack. An attacker could use this flaw to recover private keys by confining the client DH key to small subgroup of the desired group.
Clone Of:
Environment:
Last Closed: 2016-11-16 06:12:27 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2016:2779 0 normal SHIPPED_LIVE Moderate: nss and nss-util security update 2016-11-22 13:49:09 UTC

Description Huzaifa S. Sidhpurwala 2016-11-04 06:40:23 UTC 
It was found that Diffie Hellman Client key exchange handling in NSS, was vulnerable to small subgroup confinement attack[1]. An attacker could use this flaw to recover private keys by confining the client DH key to small subgroup of the desired group.


[1] https://en.wikipedia.org/wiki/Small_subgroup_confinement_attack
Comment 4 Huzaifa S. Sidhpurwala 2016-11-15 04:31:06 UTC 
Acknowledgments:

Name: Hubert Kario (Red Hat)
Comment 7 errata-xmlrpc 2016-11-16 05:59:43 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6
  Red Hat Enterprise Linux 7
  Red Hat Enterprise Linux 5

Via RHSA-2016:2779 https://rhn.redhat.com/errata/RHSA-2016-2779.html
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