Linux Kernel rw_verify_area integer overflow

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CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.7$0-$5k0.00

A vulnerability was found in Linux Kernel (Operating System) (affected version not known). It has been rated as critical. Affected by this issue is the function rw_verify_area. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-190. Impacted is confidentiality, integrity, and availability.

The weakness was disclosed 03/01/2016 as confirmed mailinglist post (oss-sec). The advisory is shared for download at seclists.org. This vulnerability is handled as CVE-2012-6701 since 03/01/2016. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 08/19/2018).

The vulnerability scanner Nessus provides a plugin with the ID 110645 (CentOS 6 : kernel (CESA-2018:1854) (Spectre)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CentOS Local Security Checks and running in the context local. The commercial vulnerability scanner Qualys is able to test this issue with plugin 157748 (Oracle Enterprise Linux Security Update for kernel (ELSA-2018-1854)).

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 3 years after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (111185) and Tenable (110645). The entries 81153 and 90526 are pretty similar.

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VulDB Meta Base Score: 8.8
VulDB Meta Temp Score: 7.7

VulDB Base Score: 9.8
VulDB Temp Score: 8.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2infoedit

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VulDB Base Score: 🔍
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Exploitinginfoedit

Class: Memory corruption
CWE: CWE-190
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 110645
Nessus Name: CentOS 6 : kernel (CESA-2018:1854) (Spectre)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 850584
OpenVAS Name: SuSE Update for kernel openSUSE-SU-2016:2144-1 (kernel)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfoedit

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Countermeasuresinfoedit

Recommended: Patch
Status: 🔍

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0-Day Time: 🔍
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Patch: git.kernel.org

Timelineinfoedit

03/01/2016 🔍
03/01/2016 +0 days 🔍
03/03/2016 +1 days 🔍
05/02/2016 +60 days 🔍
06/21/2018 +779 days 🔍
06/22/2018 +1 days 🔍
08/19/2018 +58 days 🔍

Sourcesinfoedit

Vendor: https://www.kernel.org/

Advisory: seclists.org
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2012-6701 (🔍)
X-Force: 111185 - Linux Kernel rw_verify_area() area helpers integer overflow

See also: 🔍

Entryinfoedit

Created: 03/03/2016 10:53 AM
Updated: 08/19/2018 07:35 AM
Changes: (25) vulnerability_cvss2_nvd_av vulnerability_cvss2_nvd_ac vulnerability_cvss2_nvd_au vulnerability_cvss2_nvd_ci vulnerability_cvss2_nvd_ii vulnerability_cvss2_nvd_ai vulnerability_cvss3_vuldb_av vulnerability_cvss3_vuldb_ac vulnerability_cvss3_vuldb_pr vulnerability_cvss3_vuldb_ui vulnerability_cvss3_vuldb_s vulnerability_cvss3_vuldb_c vulnerability_cvss3_vuldb_i vulnerability_cvss3_vuldb_a advisory_confirm_url countermeasure_date source_cve_assigned source_nessus_id source_nessus_name source_nessus_filename source_nessus_family source_openvas_id source_openvas_filename source_openvas_title source_openvas_family
Complete: 🔍

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