RHSA-2016:0007: Moderate: nss security update
Network Security Services (NSS) is a set of libraries designed to supportthe cross-platform development of security-enabled client and serverapplications.A flaw was found in the way TLS 1.2 could use the MD5 hash function forsigning ServerKeyExchange and Client Authentication packets during a TLShandshake. A man-in-the-middle attacker able to force a TLS connection touse the MD5 hash function could use this flaw to conduct collision attacksto impersonate a TLS server or an authenticated TLS client. (CVE-2015-7575)All nss users are advised to upgrade to these updated packages, whichcontain a backported patch to correct this issue. For the update to takeeffect, all services linked to the NSS library must be restarted, or thesystem rebooted.
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of RHSA-2016:0007?
The severity of RHSA-2016:0007 is classified as moderate.
How do I fix RHSA-2016:0007?
To fix RHSA-2016:0007, update your NSS packages to version 3.19.1-19.el7_2 or higher.
Which software is affected by RHSA-2016:0007?
RHSA-2016:0007 affects several packages including nss, nss-debuginfo, nss-devel, and nss-tools.
Is RHSA-2016:0007 related to MD5 vulnerabilities?
Yes, RHSA-2016:0007 is related to a flaw in the way TLS 1.2 uses MD5 for signing.
What versions of NSS are impacted by RHSA-2016:0007?
Versions of NSS below 3.19.1-19.el7_2 are impacted by RHSA-2016:0007.