Samba 3.6 mount.cifs/umount.cifs race condition

CVSS Meta Temp Score
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CTI Interest Score
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3.5$0-$5k0.00

A vulnerability was found in Samba 3.6 (File Transfer Software). It has been rated as problematic. Affected by this issue is an unknown part of the file mount.cifs/umount.cifs. The manipulation with an unknown input leads to a race condition vulnerability. Using CWE to declare the problem leads to CWE-362. The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. Impacted is availability. CVE summarizes:

Multiple race conditions in the (1) mount.cifs and (2) umount.cifs programs in Samba 3.6 allow local users to cause a denial of service (mounting outage) via a SIGKILL signal during a time window when the /etc/mtab~ file exists.

The weakness was disclosed 04/22/2023. The advisory is shared for download at bugzilla.redhat.com. This vulnerability is handled as CVE-2011-3585 since 09/21/2011. The exploitation is known to be difficult. The attack needs to be approached locally. No form of authentication is required for exploitation. There are known technical details, but no exploit is available.

Applying the patch 810f7e4e0f2dbcbee0294d9b371071cb08268200 is able to eliminate this problem.

The entries VDB-235090, VDB-235091, VDB-235092 and VDB-235093 are pretty similar.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
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CVSSv3info

VulDB Meta Base Score: 3.6
VulDB Meta Temp Score: 3.5

VulDB Base Score: 2.5
VulDB Temp Score: 2.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.7
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Race condition
CWE: CWE-362
CAPEC: 🔍
ATT&CK: 🔍

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 810f7e4e0f2dbcbee0294d9b371071cb08268200

Timelineinfo

09/21/2011 🔍
04/22/2023 +4231 days 🔍
04/22/2023 +0 days 🔍
04/22/2023 +0 days 🔍

Sourcesinfo

Product: samba.org

Advisory: bugzilla.redhat.com
Status: Confirmed

CVE: CVE-2011-3585 (🔍)
See also: 🔍

Entryinfo

Created: 04/22/2023 08:44 AM
Changes: 04/22/2023 08:44 AM (55)
Complete: 🔍
Cache ID: 44:646:40

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