X.org X11 Server DisableDevice heap-based overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.3$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in X.org X11 Server. Affected by this issue is the function DisableDevice. Such manipulation leads to heap-based overflow. This vulnerability is referenced as CVE-2024-21886. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in X.org X11 Server (Windowing System Software) (the affected version unknown). It has been rated as critical. Affected by this issue is the function DisableDevice. The manipulation with an unknown input leads to a heap-based overflow vulnerability. Using CWE to declare the problem leads to CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). Impacted is confidentiality, integrity, and availability. CVE summarizes:

A heap buffer overflow flaw was found in the DisableDevice function in the X.Org server. This issue may lead to an application crash or, in some circumstances, remote code execution in SSH X11 forwarding environments.

The weakness was published 01/18/2024. The advisory is available at bugzilla.redhat.com. This vulnerability is handled as CVE-2024-21886 since 01/02/2024. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 08/05/2025).

The vulnerability scanner Nessus provides a plugin with the ID 208617 (CentOS 7 : tigervnc (RHSA-2024:0629)), 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 databases at Tenable (208617) and EUVD (EUVD-2024-19497). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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Vendor

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License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.3
VulDB Meta Temp Score: 8.3

VulDB Base Score: 8.8
VulDB Temp Score: 8.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 7.8
CNA Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Heap-based overflow
CWE: CWE-122 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 208617
Nessus Name: CentOS 7 : tigervnc (RHSA-2024:0629)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/02/2024 🔍
01/18/2024 +16 days 🔍
01/18/2024 +0 days 🔍
08/05/2025 +564 days 🔍

Sourcesinfo

Vendor: x.org

Advisory: bugzilla.redhat.com
Status: Not defined

CVE: CVE-2024-21886 (🔍)
GCVE (CVE): GCVE-0-2024-21886
GCVE (VulDB): GCVE-100-251450
EUVD: 🔍

Entryinfo

Created: 01/18/2024 07:18
Updated: 08/05/2025 00:08
Changes: 01/18/2024 07:18 (37), 10/13/2024 08:50 (17), 07/09/2025 13:09 (1), 08/05/2025 00:08 (13)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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