Linux Kernel 2.6.16.9 task_show_regs information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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4.0$0-$5k0.00

A vulnerability has been found in Linux Kernel 2.6.16.9 (Operating System) and classified as problematic. This vulnerability affects the function task_show_regs. The manipulation with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality. CVE summarizes:

The task_show_regs function in arch/s390/kernel/traps.c in the Linux kernel before 2.6.38-rc4-next-20110216 on the s390 platform allows local users to obtain the values of the registers of an arbitrary process by reading a status file under /proc/.

The issue has been introduced in 03/20/2006. The weakness was disclosed 02/18/2011 by Al Viro as Bug 677850 as not defined bug report (Bugzilla). The advisory is available at bugzilla.redhat.com. This vulnerability was named CVE-2011-0710 since 01/31/2011. The exploitation appears to be easy. 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. This vulnerability is assigned to T1592 by the MITRE ATT&CK project.

The vulnerability was handled as a non-public zero-day exploit for at least 1796 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 53432 (CentOS 5 : kernel (CESA-2011:0429)), 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 155411 (Oracle Enterprise Linux Update for kernel (ELSA-2011-0421)).

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 X-Force (65464) and Tenable (53432). The entries 55628, 56087, 56654 and 61061 are pretty similar.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 4.0
VulDB Meta Temp Score: 4.0

VulDB Base Score: 4.0
VulDB Temp Score: 4.0
VulDB Vector: 🔍
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CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
ATT&CK: T1592

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 53432
Nessus Name: CentOS 5 : kernel (CESA-2011:0429)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 69970
OpenVAS Name: Debian Security Advisory DSA 2264-1 (linux-2.6)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Patch: 261cd298a8c363d7985e3482946edb4bfedacf98

Timelineinfo

03/20/2006 🔍
01/31/2011 +1778 days 🔍
02/16/2011 +16 days 🔍
02/16/2011 +0 days 🔍
02/18/2011 +2 days 🔍
02/18/2011 +0 days 🔍
03/23/2011 +33 days 🔍
10/13/2011 +204 days 🔍
03/20/2015 +1254 days 🔍
10/17/2021 +2403 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: Bug 677850
Researcher: Al Viro
Status: Not defined
Confirmation: 🔍

CVE: CVE-2011-0710 (🔍)
OVAL: 🔍
IAVM: 🔍

X-Force: 65464
Vulnerability Center: 30640 - Linux Kernel before 2.6.38-rc4-next-20110216 Local Information Disclosure Vulnerability, Medium
SecurityFocus: 46421 - Linux Kernel 'task_show_regs()' Local Information Disclosure Vulnerability
Secunia: 46397 - VMware ESX / ESXi Server Multiple Vulnerabilities, Moderately Critical

See also: 🔍

Entryinfo

Created: 03/20/2015 16:16
Updated: 10/17/2021 13:37
Changes: 03/20/2015 16:16 (67), 03/19/2017 20:39 (16), 10/17/2021 13:32 (4), 10/17/2021 13:37 (1)
Complete: 🔍

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