cifs-utils mount.cifs command injection

CVSS Meta Temp Score
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CTI Interest Score
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4.9$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in cifs-utils. The affected element is an unknown function of the file mount.cifs. The manipulation results in command injection. This vulnerability is known as CVE-2020-14342. Attacking locally is a requirement. No exploit is available.

Detailsinfo

A vulnerability was found in cifs-utils (affected version unknown). It has been classified as critical. Affected is an unknown functionality of the file mount.cifs. The manipulation with an unknown input leads to a command injection vulnerability. CWE is classifying the issue as CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

It was found that cifs-utils' mount.cifs was invoking a shell when requesting the Samba password, which could be used to inject arbitrary commands. An attacker able to invoke mount.cifs with special permission, such as via sudo rules, could use this flaw to escalate their privileges.

The weakness was published 09/09/2020 as not defined bug report (Bugzilla). The advisory is shared for download at bugzilla.redhat.com. This vulnerability is traded as CVE-2020-14342 since 06/17/2020. The attack needs to be approached locally. The successful exploitation needs a authentication. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1202.

The vulnerability scanner Nessus provides a plugin with the ID 249258 (Ubuntu 14.04 LTS / 16.04 LTS : cifs-utils vulnerabilities (USN-7688-1)), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (249258). Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.9
VulDB Meta Temp Score: 4.9

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

NVD Base Score: 4.4
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Command injection
CWE: CWE-77 / CWE-74 / CWE-707
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 249258
Nessus Name: Ubuntu 14.04 LTS / 16.04 LTS : cifs-utils vulnerabilities (USN-7688-1)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

06/17/2020 🔍
09/09/2020 +84 days 🔍
09/09/2020 +0 days 🔍
08/15/2025 +1801 days 🔍

Sourcesinfo

Advisory: bugzilla.redhat.com
Status: Not defined

CVE: CVE-2020-14342 (🔍)
GCVE (CVE): GCVE-0-2020-14342
GCVE (VulDB): GCVE-100-160980

Entryinfo

Created: 09/09/2020 21:03
Updated: 08/15/2025 15:17
Changes: 09/09/2020 21:03 (36), 09/09/2020 21:08 (11), 08/15/2025 15:17 (16)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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