CVE-2011-1585

kernel: cifs session reuse

Severity Score

6.3

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The cifs_find_smb_ses function in fs/cifs/connect.c in the Linux kernel before 2.6.36 does not properly determine the associations between users and sessions, which allows local users to bypass CIFS share authentication by leveraging a mount of a share by a different user.

La función cifs_find_smb_ses en fs/cifs/connect.c en el Linux kernel anterior a v2.6.36 no determina correctamente las asociaciones entre usuarios y sesiones, lo que permite a usuarios locales eludir la autenticación CIFS mediante el aprovechamiento de un punto de montaje compartido por un usuario diferente.

It was discovered that CIFS incorrectly handled authentication. When a user had a CIFS share mounted that required authentication, a local user could mount the same share without knowing the correct password. Andrea Righi discovered a race condition in the KSM memory merging support. If KSM was being used, a local attacker could exploit this to crash the system, leading to a denial of service. Vasily Averin discovered that the NFS Lock Manager (NLM) incorrectly handled unlock requests. A local attacker could exploit this to cause a denial of service. Various other issues were also addressed.

*Credits: N/A

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2011-04-05 CVE Reserved
2011-05-25 CVE Published
2024-08-06 CVE Updated
2024-08-06 First Exploit
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-264: Permissions, Privileges, and Access Controls

CAPEC

References (7)

URL	Tag	Source
http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.36	Release Notes
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=4ff67b720c02c36e54d55b88c2931879b7db1cd2	X_refsource_confirm
http://www.openwall.com/lists/oss-security/2011/04/15/8	Mailing List

URL	Date	SRC
https://github.com/torvalds/linux/commit/4ff67b720c02c36e54d55b88c2931879b7db1cd2	2024-08-06

URL	Date	SRC
https://bugzilla.redhat.com/show_bug.cgi?id=697394	2011-10-20

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00020.html	2023-02-13
https://access.redhat.com/security/cve/CVE-2011-1585	2011-10-20

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"				< 2.6.36 Search vendor "Linux" for product "Linux Kernel" and version " < 2.6.36"		-		Affected
Suse Search vendor "Suse"		Suse Linux Enterprise Server Search vendor "Suse" for product "Suse Linux Enterprise Server"				10 Search vendor "Suse" for product "Suse Linux Enterprise Server" and version "10"		sp4		Affected