Linux Kernel rds_sysctl_rds_table code

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.8$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel. It has been classified as problematic. The affected element is the function rds_sysctl_rds_table. Performing a manipulation results in information disclosure. This vulnerability is reported as CVE-2015-2042. The attack requires a local approach. No exploit exists. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability was found in Linux Kernel (Operating System) (unknown version). It has been classified as critical. This affects the function rds_sysctl_rds_table. The manipulation with an unknown input leads to a code vulnerability. CWE is classifying the issue as CWE-17. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

net/rds/sysctl.c in the Linux kernel before 3.19 uses an incorrect data type in a sysctl table, which allows local users to obtain potentially sensitive information from kernel memory or possibly have unspecified other impact by accessing a sysctl entry.

The weakness was disclosed 02/20/2015 as confirmed mailinglist post (oss-sec). It is possible to read the advisory at seclists.org. This vulnerability is uniquely identified as CVE-2015-2042 since 02/20/2015. Attacking locally is a requirement. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit. The reason for this vulnerability is this part of code: 

.maxlen         = sizeof(unsigned long),

The vulnerability scanner Nessus provides a plugin with the ID 84252 (Debian DLA-246-2 : linux-2.6 regression update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196067 (Ubuntu Security Notification for Linux-lts-utopic Vulnerabilities (USN-2564-1)).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. A possible mitigation has been published 5 months after the disclosure of the vulnerability. The vulnerability will be addressed with the following lines of code:

.maxlen         = sizeof(int),

The vulnerability is also documented in the databases at X-Force (101027), Tenable (84252), SecurityFocus (BID 72730†) and Vulnerability Center (SBV-49953†). Further details are available at bugzilla.redhat.com. The entries VDB-69190, VDB-69206, VDB-74021 and VDB-74659 are pretty similar. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 6.8

VulDB Base Score: 7.8
VulDB Temp Score: 6.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Code
CWE: CWE-17
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 84252
Nessus Name: Debian DLA-246-2 : linux-2.6 regression update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 800909
OpenVAS Name: Fedora Update for kernel FEDORA-2015-5024
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: db27ebb111e9f69efece08e4cb6a34ff980f8896

Timelineinfo

12/31/2013 🔍
02/19/2015 +415 days 🔍
02/20/2015 +0 days 🔍
02/20/2015 +0 days 🔍
02/25/2015 +5 days 🔍
04/21/2015 +55 days 🔍
05/03/2015 +11 days 🔍
06/17/2015 +45 days 🔍
06/18/2015 +1 days 🔍
03/10/2022 +2457 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: USN-2560-1
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-2042 (🔍)
GCVE (CVE): GCVE-0-2015-2042
GCVE (VulDB): GCVE-100-69207

OVAL: 🔍

X-Force: 101027 - Linux Kernel rds_sysctl_rds_table information disclosure
SecurityFocus: 72730 - Linux Kernel 'rds/sysctl.c' Local Information Disclosure Vulnerability
Vulnerability Center: 49953 - Linux Kernel before 3.19 Local Information Disclosure or Other Impact via a Sysctl Entry - CVE-2015-2042, Medium

Misc.: 🔍
See also: 🔍

Entryinfo

Created: 02/25/2015 10:57
Updated: 03/10/2022 16:06
Changes: 02/25/2015 10:57 (67), 09/24/2018 08:57 (17), 03/10/2022 16:06 (3)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Want to stay up to date on a daily basis?

Enable the mail alert feature now!