1391818 – (CVE-2016-8635) CVE-2016-8635 nss: small-subgroups attack flaw

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
Sub Component:
Version:	unspecified
Hardware:	All
OS:	Linux
Priority:	medium
Severity:	medium
Target Milestone:	---
Assignee:	Red Hat Product Security
QA Contact:
Docs 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)
CC List:	7 users (show)
Fixed In Version:
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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