Linux Kernel 2.6.28.2 cryptographic issue

CVSS Meta Temp Score
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CTI Interest Score
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7.5$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in Linux Kernel 2.6.28.2. This impacts an unknown function. Executing a manipulation can lead to cryptographic issue. This vulnerability is tracked as CVE-2009-3238. No exploit exists.

Detailsinfo

A vulnerability was found in Linux Kernel 2.6.28.2 (Operating System). It has been declared as critical. This vulnerability affects an unknown function. The manipulation with an unknown input leads to a cryptographic issue vulnerability. The CWE definition for the vulnerability is CWE-310. As an impact it is known to affect confidentiality. CVE summarizes:

The get_random_int function in drivers/char/random.c in the Linux kernel before 2.6.30 produces insufficiently random numbers, which allows attackers to predict the return value, and possibly defeat protection mechanisms based on randomization, via vectors that leverage the function s tendency to "return the same value over and over again for long stretches of time."

The issue has been introduced in 12/25/2008. The weakness was disclosed 09/18/2009 (Website). The advisory is shared for download at patchwork.kernel.org. This vulnerability was named CVE-2009-3238. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1600.

The vulnerability was handled as a non-public zero-day exploit for at least 267 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 43757 (CentOS 5 : kernel (CESA-2009:1106)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CentOS Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 165661 (SUSE Enterprise Linux Security Update Linux Kernel (SUSE-SA:2009:054)).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (43757), SecurityFocus (BID 36788†) and Vulnerability Center (SBV-23874†). The entries VDB-48336, VDB-48273, VDB-47913 and VDB-50693 are pretty similar. Once again VulDB remains the best source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.5

VulDB Base Score: 7.5
VulDB Temp Score: 7.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Cryptographic issue
CWE: CWE-310
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 43757
Nessus Name: CentOS 5 : kernel (CESA-2009:1106)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 66207
OpenVAS Name: Debian Security Advisory DSA 1927-1 (linux-2.6)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/25/2008 🔍
09/18/2009 +266 days 🔍
09/18/2009 +0 days 🔍
09/18/2009 +0 days 🔍
09/18/2009 +0 days 🔍
09/18/2009 +0 days 🔍
10/27/2009 +39 days 🔍
03/18/2015 +1968 days 🔍
08/22/2021 +2349 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: patchwork.kernel.org
Status: Not defined
Confirmation: 🔍

CVE: CVE-2009-3238 (🔍)
GCVE (CVE): GCVE-0-2009-3238
GCVE (VulDB): GCVE-100-50092

OVAL: 🔍

SecurityFocus: 36788 - Linux Kernel 'get_random_int' Random Number Generation Weakness
Vulnerability Center: 23874 - Linux kernel < 2.6.30 get_random_int Insufficiently Random Numbers Vulnerability, Medium

See also: 🔍

Entryinfo

Created: 03/18/2015 15:15
Updated: 08/22/2021 20:09
Changes: 03/18/2015 15:15 (59), 02/16/2017 10:04 (10), 08/22/2021 20:02 (4), 08/22/2021 20:09 (1)
Complete: 🔍
Cache ID: 216::103

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