CVE-2011-1020

Linux Kernel 2.6.32 (Ubuntu 10.04) - '/proc' Handling SUID Privilege Escalation

Severity Score

4.6

*CVSS v2

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The proc filesystem implementation in the Linux kernel 2.6.37 and earlier does not restrict access to the /proc directory tree of a process after this process performs an exec of a setuid program, which allows local users to obtain sensitive information or cause a denial of service via open, lseek, read, and write system calls.

La implementación del sistema de ficheros proc en el Kernel de Linux v2.6.37 y anteriores no restringe el acceso a un proceso del árbol del directorio /proc después de realizar este un proceso exec en un programa setuid, permite a usuarios locales obtener información sensible o provocar una denegación de servicio a través de llamadas open, lseek, read y write al sistema.

Linux kernel version 2.6.32 (Ubuntu 10.04) suffers from a /proc handling setuid privilege escalation vulnerability.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2011-01-17 First Exploit
2011-02-14 CVE Reserved
2011-02-28 CVE Published
2023-03-08 EPSS Updated
2024-08-06 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-200: Exposure of Sensitive Information to an Unauthorized Actor

CAPEC

References (18)

URL	Tag	Source
http://openwall.com/lists/oss-security/2011/02/24/18	Mailing List
http://openwall.com/lists/oss-security/2011/02/25/2	Mailing List
http://secunia.com/advisories/43496	Third Party Advisory
http://securityreason.com/securityalert/8107	Third Party Advisory
http://www.securityfocus.com/bid/46567	Third Party Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/65693	Third Party Advisory
https://lkml.org/lkml/2011/2/10/21	Mailing List
https://lkml.org/lkml/2011/2/7/404	Mailing List
https://lkml.org/lkml/2011/2/7/414	Mailing List
https://lkml.org/lkml/2011/2/7/466	Mailing List
https://lkml.org/lkml/2011/2/7/474	Mailing List
https://lkml.org/lkml/2011/2/9/417	Mailing List

URL	Date	SRC
https://www.exploit-db.com/exploits/41770	2011-01-17
http://seclists.org/fulldisclosure/2011/Jan/421	2024-08-06
http://www.halfdog.net/Security/2011/SuidBinariesAndProcInterface	2024-08-06
https://lkml.org/lkml/2011/2/7/368	2024-08-06

URL	Date	SRC

URL	Date	SRC
https://access.redhat.com/security/cve/CVE-2011-1020	2012-02-15
https://bugzilla.redhat.com/show_bug.cgi?id=680358	2012-02-15

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 2.6.37 Search vendor "Linux" for product "Linux Kernel" and version " < 2.6.37"		-		Affected