sudo up to 1.9.4 sudoedit personality sudo_edit.c race condition

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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2.4$0-$5k0.00

Summaryinfo

A vulnerability has been found in sudo up to 1.9.4 and classified as problematic. The impacted element is an unknown function of the file sudo_edit.c of the component sudoedit personality. Performing a manipulation results in race condition. This vulnerability is known as CVE-2021-23239. Attacking locally is a requirement. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as problematic has been found in sudo up to 1.9.4 (Operating System Utility Software). This affects an unknown part of the file sudo_edit.c of the component sudoedit personality. The manipulation with an unknown input leads to a race condition vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality.

The weakness was published 01/12/2021. The advisory is shared at bugzilla.suse.com. This vulnerability is uniquely identified as CVE-2021-23239. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 236710 (Alibaba Cloud Linux 3 : 0113: sudo (ALINUX3-SA-2022:0113)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 1.9.5 eliminates this vulnerability. The upgrade is hosted for download at sudo.ws.

The vulnerability is also documented in the vulnerability database at Tenable (236710). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 2.5
VulDB Meta Temp Score: 2.4

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

NVD Base Score: 2.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Race condition
CWE: CWE-362
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: 236710
Nessus Name: Alibaba Cloud Linux 3 : 0113: sudo (ALINUX3-SA-2022:0113)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: sudo 1.9.5

Timelineinfo

01/07/2021 🔍
01/12/2021 +5 days 🔍
01/12/2021 +0 days 🔍
05/16/2025 +1585 days 🔍

Sourcesinfo

Advisory: bugzilla.suse.com
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-23239 (🔍)
GCVE (CVE): GCVE-0-2021-23239
GCVE (VulDB): GCVE-100-167625

Entryinfo

Created: 01/12/2021 14:00
Updated: 05/16/2025 20:27
Changes: 01/12/2021 14:00 (39), 02/11/2021 18:10 (6), 02/11/2021 18:15 (16), 05/16/2025 20:27 (16)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion

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