Linux Kernel rw_verify_area integer overflow

CVSS Meta Temp Score
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CTI Interest Score
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8.2$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Linux Kernel. Impacted is the function rw_verify_area. Such manipulation leads to integer overflow. This vulnerability is uniquely identified as CVE-2012-6701. The attack can be launched remotely. No exploit exists. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability was found in Linux Kernel (Operating System) (affected version unknown). 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 integer overflow vulnerability. Using CWE to declare the problem leads to CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Integer overflow in fs/aio.c in the Linux kernel before 3.4.1 allows local users to cause a denial of service or possibly have unspecified other impact via a large AIO iovec.

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 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 l. 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 VDB-81153 and VDB-90526 are pretty similar. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.8
VulDB Meta Temp Score: 8.2

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

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Integer overflow
CWE: CWE-190 / CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

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 Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Patch: git.kernel.org

Timelineinfo

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 🔍
07/09/2022 +1478 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: RHSA-2018:1854
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2012-6701 (🔍)
GCVE (CVE): GCVE-0-2012-6701
GCVE (VulDB): GCVE-100-81152
X-Force: 111185 - Linux Kernel rw_verify_area() area helpers integer overflow

See also: 🔍

Entryinfo

Created: 03/03/2016 10:53
Updated: 07/09/2022 06:09
Changes: 03/03/2016 10:53 (55), 08/19/2018 07:35 (25), 07/09/2022 06:09 (3)
Complete: 🔍
Cache ID: 216:17E:103

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