X.org X11 Server up to 21.1.8 DestroyWindow use after free

CVSS Meta Temp Score
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CTI Interest Score
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4.6$0-$5k0.00

Summaryinfo

A vulnerability has been found in X.org X11 Server up to 21.1.8 and classified as problematic. This issue affects the function DestroyWindow. This manipulation causes use after free. The identification of this vulnerability is CVE-2023-5380. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as problematic was found in X.org X11 Server up to 21.1.8 (Windowing System Software). Affected by this vulnerability is the function DestroyWindow. The manipulation with an unknown input leads to a use after free vulnerability. The CWE definition for the vulnerability is CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. The impact remains unknown.

The weakness was shared 10/25/2023. It is possible to read the advisory at seclists.org. This vulnerability is known as CVE-2023-5380. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 233579 (Oracle Linux 7 : tigervnc (ELSA-2025-2861)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 21.1.9 eliminates this vulnerability. Applying the patch 564ccf2ce9616620456102727acb8b0256b7bbd7 is able to eliminate this problem. The bugfix is ready for download at gitlab.freedesktop.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (233579) and EUVD (EUVD-2023-57696). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.7
VulDB Meta Temp Score: 4.6

VulDB Base Score: 4.6
VulDB Temp Score: 4.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.7
NVD Vector: 🔍

CNA Base Score: 4.7
CNA Vector (Red Hat, Inc.): 🔍

CVSSv2info

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

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 233579
Nessus Name: Oracle Linux 7 : tigervnc (ELSA-2025-2861)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: X11 Server 21.1.9
Patch: 564ccf2ce9616620456102727acb8b0256b7bbd7

Timelineinfo

10/04/2023 🔍
10/25/2023 +21 days 🔍
10/25/2023 +0 days 🔍
11/06/2025 +743 days 🔍

Sourcesinfo

Vendor: x.org

Advisory: FEDORA-2023-dbacf5d9f6
Status: Confirmed

CVE: CVE-2023-5380 (🔍)
GCVE (CVE): GCVE-0-2023-5380
GCVE (VulDB): GCVE-100-243379
EUVD: 🔍

Entryinfo

Created: 10/25/2023 13:52
Updated: 11/06/2025 23:44
Changes: 10/25/2023 13:52 (38), 10/25/2023 13:55 (2), 11/16/2023 13:28 (3), 11/16/2023 13:34 (11), 09/16/2024 18:50 (27), 04/01/2025 21:59 (2), 11/06/2025 23:44 (1)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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