5.8
MEDIUM
CVE-2013-4345
Linux Kernel CPRNG Off-by-One Error Cryptographic Vulnerability
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.

INFO

Published Date :

Oct. 10, 2013, 10:55 a.m.

Last Modified :

Feb. 13, 2023, 12:28 a.m.

Remotely Exploitable :

Yes !

Impact Score :

4.9

Exploitability Score :

8.6
Affected Products

The following products are affected by CVE-2013-4345 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Redhat enterprise_linux
2 Redhat enterprise_mrg
1 Linux linux_kernel
1 Fedoraproject fedora

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2013-4345 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2013-4345 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Feb. 13, 2023

    Action Type Old Value New Value
    Changed Description CVE-2013-4345 kernel: ansi_cprng: off by one error in non-block size request 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.
    Removed CVSS V2 Red Hat, Inc. (AV:L/AC:H/Au:N/C:P/I:P/A:N)
    Removed Reference https://access.redhat.com/errata/RHSA-2013:1449 [No Types Assigned]
    Removed Reference https://access.redhat.com/errata/RHSA-2013:1490 [No Types Assigned]
    Removed Reference https://access.redhat.com/errata/RHSA-2013:1645 [No Types Assigned]
    Removed Reference https://access.redhat.com/security/cve/CVE-2013-4345 [No Types Assigned]
  • CVE Modified by [email protected]

    Feb. 02, 2023

    Action Type Old Value New Value
    Changed 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. CVE-2013-4345 kernel: ansi_cprng: off by one error in non-block size request
    Added CVSS V2 Red Hat, Inc. (AV:L/AC:H/Au:N/C:P/I:P/A:N)
    Added Reference https://access.redhat.com/errata/RHSA-2013:1490 [No Types Assigned]
    Added Reference https://access.redhat.com/security/cve/CVE-2013-4345 [No Types Assigned]
    Added Reference https://access.redhat.com/errata/RHSA-2013:1645 [No Types Assigned]
    Added Reference https://access.redhat.com/errata/RHSA-2013:1449 [No Types Assigned]
  • CPE Deprecation Remap by [email protected]

    Jul. 15, 2021

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:redhat:enterprise_mrg:2.0:*:*:*:*:*:*:* OR *cpe:2.3:o:redhat:enterprise_mrg:2.0:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Jul. 15, 2021

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:redhat:enterprise_mrg:2.1:*:*:*:*:*:*:* OR *cpe:2.3:o:redhat:enterprise_mrg:2.1:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Jul. 15, 2021

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:redhat:enterprise_mrg:2.2:*:*:*:*:*:*:* OR *cpe:2.3:o:redhat:enterprise_mrg:2.2:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Jul. 15, 2021

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:redhat:enterprise_mrg:2.3:*:*:*:*:*:*:* OR *cpe:2.3:o:redhat:enterprise_mrg:2.3:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Jul. 15, 2021

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:redhat:enterprise_mrg:2.4:*:*:*:*:*:*:* OR *cpe:2.3:o:redhat:enterprise_mrg:2.4:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Apr. 22, 2019

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:o:redhat:enterprise_linux:6:*:*:*:*:*:*:* OR *cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    May. 21, 2015

    Action Type Old Value New Value
    Added Reference http://www.securityfocus.com/bid/62740
  • Initial Analysis by [email protected]

    Oct. 09, 2013

    Action Type Old Value New Value
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2013-4345 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2013-4345 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.59 }} 0.02%

score

0.75065

percentile

CVSS2 - Vulnerability Scoring System
Access Vector
Access Complexity
Authentication
Confidentiality
Integrity
Availability