Vulnerability Monitor

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CVE-2011-1020

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.

Published

2011-02-28T16:00:01.930

Last Modified

2025-04-11T00:51:21.963

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 4.6 (MEDIUM)

CVSSv2 Vector

AV:L/AC:L/Au:N/C:P/I:P/A:P

Access Vector: LOCAL
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: PARTIAL

Exploitability Score

3.9

Impact Score

6.4

Weaknesses

Type: Primary
CWE-200

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	linux	linux_kernel	< 2.6.37	Yes

References

http://openwall.com/lists/oss-security/2011/02/24/18 Mailing List, Third Party Advisory ([email protected])
http://openwall.com/lists/oss-security/2011/02/25/2 Mailing List, Third Party Advisory ([email protected])
http://seclists.org/fulldisclosure/2011/Jan/421 Exploit, Mailing List, Third Party Advisory ([email protected])
http://secunia.com/advisories/43496 Third Party Advisory ([email protected])
http://securityreason.com/securityalert/8107 Third Party Advisory ([email protected])
http://www.halfdog.net/Security/2011/SuidBinariesAndProcInterface/ Exploit, Third Party Advisory ([email protected])
http://www.securityfocus.com/bid/46567 Third Party Advisory, VDB Entry ([email protected])
https://exchange.xforce.ibmcloud.com/vulnerabilities/65693 Third Party Advisory, VDB Entry ([email protected])
https://lkml.org/lkml/2011/2/10/21 Mailing List, Third Party Advisory ([email protected])
https://lkml.org/lkml/2011/2/7/368 Exploit, Mailing List, Third Party Advisory ([email protected])
https://lkml.org/lkml/2011/2/7/404 Mailing List, Third Party Advisory ([email protected])
https://lkml.org/lkml/2011/2/7/414 Mailing List, Third Party Advisory ([email protected])
https://lkml.org/lkml/2011/2/7/466 Mailing List, Third Party Advisory ([email protected])
https://lkml.org/lkml/2011/2/7/474 Mailing List, Third Party Advisory ([email protected])
https://lkml.org/lkml/2011/2/9/417 Mailing List, Third Party Advisory ([email protected])
http://openwall.com/lists/oss-security/2011/02/24/18 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://openwall.com/lists/oss-security/2011/02/25/2 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://seclists.org/fulldisclosure/2011/Jan/421 Exploit, Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/43496 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://securityreason.com/securityalert/8107 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.halfdog.net/Security/2011/SuidBinariesAndProcInterface/ Exploit, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/46567 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
https://exchange.xforce.ibmcloud.com/vulnerabilities/65693 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
https://lkml.org/lkml/2011/2/10/21 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lkml.org/lkml/2011/2/7/368 Exploit, Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lkml.org/lkml/2011/2/7/404 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lkml.org/lkml/2011/2/7/414 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lkml.org/lkml/2011/2/7/466 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lkml.org/lkml/2011/2/7/474 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lkml.org/lkml/2011/2/9/417 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)