CVE-2011-1020

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

Severity Score

7.1

*CVSS v3

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

CVSS Scores

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

High

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
2024-08-06 CVE Updated
2024-12-17 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

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

CAPEC

References (19)

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://packetstorm.news/files/id/141912	2017-04-01
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