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CVE-2016-8635

Status Candidate

Overview

It was found that Diffie Hellman Client key exchange handling in NSS 3.21.x 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.

Related Files

Gentoo Linux Security Advisory 201701-46
Posted Jan 20, 2017
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201701-46 - Multiple vulnerabilities have been found in NSS, the worst of which could allow remote attackers to obtain access to private key information. Versions less than 3.28 are affected.

tags | advisory, remote, vulnerability
systems | linux, gentoo
advisories | CVE-2015-2721, CVE-2015-4000, CVE-2015-7575, CVE-2016-1938, CVE-2016-5285, CVE-2016-8635, CVE-2016-9074
MD5 | 0f6eee195afeafb86e9cd1a3fcd4d929
Ubuntu Security Notice USN-3163-1
Posted Jan 4, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3163-1 - It was discovered that NSS incorrectly handled certain invalid Diffie-Hellman keys. A remote attacker could possibly use this flaw to cause NSS to crash, resulting in a denial of service. This issue only applied to Ubuntu 12.04 LTS, Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. Hubert Kario discovered that NSS incorrectly handled Diffie Hellman client key exchanges. A remote attacker could possibly use this flaw to perform a small subgroup confinement attack and recover private keys. This issue only applied to Ubuntu 12.04 LTS, Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. Various other issues were also addressed.

tags | advisory, remote, denial of service
systems | linux, ubuntu
advisories | CVE-2016-5285, CVE-2016-8635, CVE-2016-9074
MD5 | df53290af5a09c78788e618507be699c
Red Hat Security Advisory 2016-2779-01
Posted Nov 16, 2016
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2016-2779-01 - Network Security Services is a set of libraries designed to support the cross-platform development of security-enabled client and server applications. The nss-util packages provide utilities for use with the Network Security Services libraries. The following packages have been upgraded to a newer upstream version: nss, nss-util. Multiple security issues have been addressed.

tags | advisory
systems | linux, redhat
advisories | CVE-2016-2834, CVE-2016-5285, CVE-2016-8635
MD5 | 8cd3de67f016ea07b1bfbf7a73b94364
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