X.org X11 Server up to 21.1.9 Request out-of-bounds

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.4$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in X.org X11 Server. The impacted element is an unknown function of the component Request Handler. Performing a manipulation results in out-of-bounds. This vulnerability is identified as CVE-2023-6478. The attack can be initiated remotely. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in X.org X11 Server (Windowing System Software). This affects an unknown code of the component Request Handler. The manipulation with an unknown input leads to a out-of-bounds vulnerability. CWE is classifying the issue as CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality. The summary by CVE is:

A flaw was found in xorg-server. A specially crafted request to RRChangeProviderProperty or RRChangeOutputProperty can trigger an integer overflow which may lead to a disclosure of sensitive information.

The weakness was released 12/13/2023. The advisory is shared at access.redhat.com. This vulnerability is uniquely identified as CVE-2023-6478 since 12/04/2023. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 211567 (Oracle Linux 9 : xorg-x11-server-Xwayland (ELSA-2024-9093)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 21.1.10 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (211567) and EUVD (EUVD-2023-58711). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.4

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CNA Base Score: 7.6
CNA Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 211567
Nessus Name: Oracle Linux 9 : xorg-x11-server-Xwayland (ELSA-2024-9093)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: X11 Server 21.1.10
Patch: gitlab.freedesktop.org

Timelineinfo

12/04/2023 🔍
12/13/2023 +9 days 🔍
12/13/2023 +0 days 🔍
07/09/2025 +574 days 🔍

Sourcesinfo

Vendor: x.org

Advisory: RHSA-2023:7886
Status: Confirmed

CVE: CVE-2023-6478 (🔍)
GCVE (CVE): GCVE-0-2023-6478
GCVE (VulDB): GCVE-100-247881
EUVD: 🔍

Entryinfo

Created: 12/13/2023 08:09
Updated: 07/09/2025 13:09
Changes: 12/13/2023 08:09 (49), 01/07/2024 03:09 (2), 09/17/2024 00:14 (28), 11/19/2024 23:13 (2), 07/09/2025 13:09 (1)
Complete: 🔍
Cache ID: 216::103

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

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