CVE-2013-4345
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,…
Does this matter?
Lower severity and a low EPSS score (3.21%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 2.0
- 5.8 MEDIUMAV:N/AC:M/Au:N/C:P/I:P/A:N
- EPSS
- 3.21% probability · 87th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-189
- Affected
- linux/linux kernel · fedoraproject/fedora · redhat/enterprise linux · redhat/enterprise mrg
- Source
- secalert@redhat.com
References
- http://marc.info/?l=linux-crypto-vger&m=137942122902845&w=2Patch
- 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
- http://marc.info/?l=linux-crypto-vger&m=137942122902845&w=2Patch
- 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.