Linux Kernel 3.11.1 crypto/ansi_cprng.c numeric error

CVSS Meta Temp Score
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CTI Interest Score
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2.8$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel 3.11.1 and classified as problematic. This vulnerability affects unknown code of the file crypto/ansi_cprng.c. Such manipulation leads to numeric error. This vulnerability is traded as CVE-2013-4345. There is no exploit available. It is best practice to apply a patch to resolve this issue.

Detailsinfo

A vulnerability was found in Linux Kernel 3.11.1 (Operating System). It has been rated as problematic. Affected by this issue is an unknown code of the file crypto/ansi_cprng.c. The manipulation with an unknown input leads to a numeric error vulnerability. Using CWE to declare the problem leads to CWE-189. Impacted is confidentiality. CVE summarizes:

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.

The weakness was shared 09/13/2013 by Stephan Mueller as confirmed mailinglist post (Website). The advisory is available at marc.info. The vendor cooperated in the coordination of the public release. This vulnerability is handled as CVE-2013-4345 since 06/12/2013. The exploitation is known to be difficult. Local access is required to approach this attack. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 70282 (Fedora 20 : kernel-3.11.2-301.fc20 (2013-17982)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 195833 (Ubuntu Security Notification for Linux-lts-saucy Vulnerabilities (USN-2070-1)).

Applying a patch is able to eliminate this problem. A possible mitigation has been published 4 days after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (87597), Tenable (70282), SecurityFocus (BID 62740†), OSVDB (98017†) and Vulnerability Center (SBV-41868†). The entries VDB-11315, VDB-11317, VDB-11365 and VDB-11491 are related to this item. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 2.9
VulDB Meta Temp Score: 2.8

VulDB Base Score: 2.9
VulDB Temp Score: 2.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Numeric error
CWE: CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 70282
Nessus Name: Fedora 20 : kernel-3.11.2-301.fc20 (2013-17982)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 881811
OpenVAS Name: CentOS Update for kernel CESA-2013:1449 centos5
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
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Timelineinfo

06/12/2013 🔍
09/13/2013 +92 days 🔍
09/13/2013 +0 days 🔍
09/13/2013 +0 days 🔍
09/17/2013 +4 days 🔍
10/03/2013 +16 days 🔍
10/03/2013 +0 days 🔍
10/10/2013 +7 days 🔍
10/13/2013 +3 days 🔍
05/26/2021 +2782 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: marc.info
Researcher: Stephan Mueller
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2013-4345 (🔍)
GCVE (CVE): GCVE-0-2013-4345
GCVE (VulDB): GCVE-100-10574

OVAL: 🔍

X-Force: 87597
SecurityFocus: 62740
OSVDB: 98017
Vulnerability Center: 41868 - Linux Kernel Through 3.11.4 Remote Improper Data Management (CVE-2013-4345), Medium

See also: 🔍

Entryinfo

Created: 10/03/2013 17:00
Updated: 05/26/2021 09:04
Changes: 10/03/2013 17:00 (79), 05/13/2017 09:47 (1), 05/26/2021 09:04 (5)
Complete: 🔍
Committer:
Cache ID: 216:3D6:103

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