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CVE Database

CVE-2013-4345

Impact: Moderate
Public: 2013-09-17
Bugzilla: 1007690: CVE-2013-4345 kernel: ansi_cprng: off by one error in non-block size request

Details

The MITRE CVE dictionary describes this issue as:

Off-by-one error in the get_prng_bytes function in crypto/ansi_cprng.c in the Linux kernel through 3.11.4 makes it easier for context-dependent attackers to defeat cryptographic protection mechanisms via multiple requests for small amounts of data, leading to improper management of the state of the consumed data.

Find out more about CVE-2013-4345 from the MITRE CVE dictionary and NIST NVD.

Statement

This issue affects the versions of Linux kernel as shipped with Red Hat Enterprise Linux 5, 6 and Red Hat Enterprise MRG 2. Future kernel updates for Red Hat Enterprise Linux 5, 6 and Red Hat Enterprise MRG 2 may address this issue.

CVSS v2 metrics

Base Score: 2.6
Base Metrics: AV:L/AC:H/Au:N/C:P/I:P/A:N
Access Vector: Local
Access Complexity: High
Authentication: None
Confidentiality Impact: Partial
Integrity Impact: Partial
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
MRG Grid for RHEL 6 Server v.2 (kernel-rt) RHSA-2013:1490 October 31, 2013
Red Hat Enterprise Linux version 5 (kernel) RHSA-2013:1449 October 22, 2013
Red Hat Enterprise Linux version 6 (kernel) RHSA-2013:1645 November 20, 2013

External References

Acknowledgements

Red Hat would like to thank Stephan Mueller for reporting this issue.

This page is generated automatically and has not been checked for errors or omissions.

For clarification or corrections please contact the Red Hat Security Response Team.