CVE-2016-6313

Impact:
Moderate
Public Date:
2016-08-17
Bugzilla:
1366105: CVE-2016-6313 libgcrypt: PRNG output is predictable
A design flaw was found in the libgcrypt PRNG (Pseudo-Random Number Generator). An attacker able to obtain the first 580 bytes of the PRNG output could predict the following 20 bytes.

Find out more about CVE-2016-6313 from the MITRE CVE dictionary dictionary and NIST NVD.

CVSS v2 metrics

Base Score 4
Base Metrics AV:N/AC:H/Au:N/C:P/I:P/A:N
Access Vector Network
Access Complexity High
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact None

CVSS v3 metrics

CVSS3 Base Score 4.8
CVSS3 Base Metrics CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity Impact Low
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 7 (libgcrypt) RHSA-2016:2674 2016-11-08
Red Hat Enterprise Linux 6 (libgcrypt) RHSA-2016:2674 2016-11-08

Affected Packages State

Platform Package State
Red Hat Enterprise Linux 5 libgcrypt Will not fix
Unless explicitly stated as not affected, all previous versions of packages in any minor update stream of a product listed here should be assumed vulnerable, although may not have been subject to full analysis.

Acknowledgements

Red Hat would like to thank Felix Dörre and Vladimir Klebanov for reporting this issue.

External References

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