CVE-2013-4345

MEDIUM

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.

References

http://marc.info/?l=linux-crypto-vger&m=137942122902845&w=2

http://rhn.redhat.com/errata/RHSA-2013-1449.html

http://rhn.redhat.com/errata/RHSA-2013-1490.html

http://rhn.redhat.com/errata/RHSA-2013-1645.html

http://www.securityfocus.com/bid/62740

http://www.ubuntu.com/usn/USN-2064-1

http://www.ubuntu.com/usn/USN-2065-1

http://www.ubuntu.com/usn/USN-2068-1

http://www.ubuntu.com/usn/USN-2070-1

http://www.ubuntu.com/usn/USN-2071-1

http://www.ubuntu.com/usn/USN-2072-1

http://www.ubuntu.com/usn/USN-2074-1

http://www.ubuntu.com/usn/USN-2075-1

http://www.ubuntu.com/usn/USN-2076-1

http://www.ubuntu.com/usn/USN-2109-1

http://www.ubuntu.com/usn/USN-2110-1

http://www.ubuntu.com/usn/USN-2158-1

https://bugzilla.redhat.com/show_bug.cgi?id=1007690

Details

Source: MITRE

Published: 2013-10-10

Updated: 2019-04-22

Type: CWE-189

Risk Information

CVSS v2.0

Base Score: 5.8

Vector: AV:N/AC:M/Au:N/C:P/I:P/A:N

Impact Score: 4.9

Exploitability Score: 8.6

Severity: MEDIUM