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8.9	$0-$5k	0.00

A vulnerability was found in Linux Kernel 3.11.6 (Operating System). It has been declared as critical. This vulnerability affects the function uio_mmap_physical of the file drivers/uio/uio.c of the component Size Checker. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

The uio_mmap_physical function in drivers/uio/uio.c in the Linux kernel before 3.12 does not validate the size of a memory block, which allows local users to cause a denial of service (memory corruption) or possibly gain privileges via crafted mmap operations, a different vulnerability than CVE-2013-4511.

The weakness was presented 10/29/2013 by Fabian Yamaguchi and Nico Golde as some unstracked linux kernel security fixes as confirmed mailinglist post (oss-sec). The advisory is available at seclists.org. The public release was coordinated in cooperation with the vendor. This vulnerability was named CVE-2013-6763 since 11/08/2013. The exploitation appears to be difficult. Local access is required to approach this attack. No form of authentication is required for a successful exploitation. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 71511 (Mandriva Linux Security Advisory : kernel (MDVSA-2013:291)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Mandriva Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 195832 (Ubuntu Security Notification for Linux-lts-raring Vulnerabilities (USN-2069-1)).

Applying the patch Fix a few incorrectly checked [io_]remap_pfn_range() calls is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (71511). See 11089, 11090, 11092 and 11093 for similar entries.

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 3.11.6

License

• open-source

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.3
VulDB Meta Temp Score: 8.9

VulDB Base Score: 9.3
VulDB Temp Score: 8.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Nessus ID: 71511
Nessus Name: Mandriva Linux Security Advisory : kernel (MDVSA-2013:291)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 841676
OpenVAS Name: Ubuntu Update for linux USN-2064-1
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: Fix a few incorrectly checked [io_]remap_pfn_range() calls

Timelineinfo

10/29/2013 🔍
10/29/2013 +0 days 🔍
11/08/2013 +10 days 🔍
11/12/2013 +4 days 🔍
11/12/2013 +0 days 🔍
11/15/2013 +3 days 🔍
11/17/2013 +2 days 🔍
06/02/2021 +2754 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: some unstracked linux kernel security fixes
Researcher: Fabian Yamaguchi, Nico Golde
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2013-6763 (🔍)
OVAL: 🔍

Vulnerability Center: 42317 - Linux Kernel Local DoS and Possible Privilege Escalation via Crafted mmap Operations, High
SecurityFocus: 63512
OSVDB: 99673

See also: 🔍

Entryinfo

Created: 11/15/2013 14:48
Updated: 06/02/2021 08:40
Changes: 11/15/2013 14:48 (79), 05/15/2017 11:36 (1), 06/02/2021 08:40 (3)
Complete: 🔍

Discussion

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