CVE-2016-8635

Impact:
Moderate
Public Date:
2016-11-16
Bugzilla:
1391818: CVE-2016-8635 nss: small-subgroups attack flaw
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.

Find out more about CVE-2016-8635 from the MITRE CVE dictionary dictionary and NIST NVD.

CVSS v2 metrics

Base Score 4.3
Base Metrics AV:N/AC:M/Au:N/C:P/I:N/A:N
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact Partial
Integrity Impact None
Availability Impact None

CVSS v3 metrics

CVSS3 Base Score 5.3
CVSS3 Base Metrics CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity Impact None
Availability Impact None

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat Security Errata

Platform Errata Release Date
Red Hat Enterprise Linux 6 (nss) RHSA-2016:2779 2016-11-16
Red Hat Enterprise Linux 5 (nss) RHSA-2016:2779 2016-11-16
Red Hat Enterprise Linux 7 (nss) RHSA-2016:2779 2016-11-16

Acknowledgements

This issue was discovered by Hubert Kario (Red Hat).

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