Ubuntu/Debian Linux aufs vfsub_dentry_open reference count

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

A vulnerability was found in Ubuntu/Debian Linux (Operating System) (the affected version unknown). It has been declared as problematic. This vulnerability affects the function vfsub_dentry_open of the component aufs. The manipulation with an unknown input leads to a reference count vulnerability. The CWE definition for the vulnerability is CWE-911. The product uses a reference count to manage a resource, but it does not update or incorrectly updates the reference count. As an impact it is known to affect availability. CVE summarizes:

It was discovered that aufs improperly managed inode reference counts in the vfsub_dentry_open() method. A local attacker could use this vulnerability to cause a denial of service attack.

The weakness was shared 04/07/2023. The advisory is available at bugs.launchpad.net. This vulnerability was named CVE-2020-11935 since 04/20/2020. Technical details are known, but there is no available exploit.

Upgrading eliminates this vulnerability.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

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

CVSSv3info

VulDB Meta Base Score: 5.1
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CNA Base Score: 4.4
CNA Vector (Canonical Ltd.): 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Reference count
CWE: CWE-911
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: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

04/20/2020 🔍
04/07/2023 +1082 days 🔍
04/07/2023 +0 days 🔍
04/24/2023 +17 days 🔍

Sourcesinfo

Advisory: bugs.launchpad.net
Status: Confirmed

CVE: CVE-2020-11935 (🔍)

Entryinfo

Created: 04/07/2023 08:51
Updated: 04/24/2023 09:22
Changes: 04/07/2023 08:51 (49), 04/19/2023 16:13 (1), 04/24/2023 09:22 (11)
Complete: 🔍

Discussion

Anonymous User 👤 (+0)
1 Year ago
Good morning
Could You explain why the cpe2.3: o: ubuntu: linux:*:*:*:*:*:*:* was used for the CVE-2020-11935 instead of the following officers adopted by NIST:
Canonical: Ubuntu_linux
Debian: Debian_linux
Linux: Linux_kernel

Could you eventually update?
Thanks.

Greetings
VulDB Community Team 👨‍💻1 Year ago
Thank you for your remark. We have just updated the entry to reflect both Ubuntu and Debian correctly.

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