CVE-2013-4345

Description

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.

Category

5.8
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 1.02% Top 25%
Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory redhat.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.ubuntu.com/usn/USN-2065-1 vendor advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1007690
http://www.ubuntu.com/usn/USN-2110-1 vendor advisory
http://rhn.redhat.com/errata/RHSA-2013-1490.html vendor advisory
http://rhn.redhat.com/errata/RHSA-2013-1645.html vendor advisory
http://www.ubuntu.com/usn/USN-2076-1 vendor advisory
http://www.ubuntu.com/usn/USN-2158-1 vendor advisory
http://www.ubuntu.com/usn/USN-2070-1 vendor advisory
http://www.ubuntu.com/usn/USN-2071-1 vendor advisory
http://www.ubuntu.com/usn/USN-2109-1 vendor advisory
http://rhn.redhat.com/errata/RHSA-2013-1449.html vendor advisory
http://www.securityfocus.com/bid/62740 vdb entry
http://www.ubuntu.com/usn/USN-2074-1 vendor advisory
http://www.ubuntu.com/usn/USN-2068-1 vendor advisory
http://marc.info/?l=linux-crypto-vger&m=137942122902845&w=2 mailing list patch
http://www.ubuntu.com/usn/USN-2072-1 vendor advisory
http://www.ubuntu.com/usn/USN-2075-1 vendor advisory
http://www.ubuntu.com/usn/USN-2064-1 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2013-4345?
CVE-2013-4345 has been scored as a medium severity vulnerability.
How to fix CVE-2013-4345?
To fix CVE-2013-4345, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2013-4345 being actively exploited in the wild?
It is possible that CVE-2013-4345 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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