// For flags

CVE-2024-31080

Xorg-x11-server: heap buffer overread/data leakage in procxigetselectedevents

Severity Score

7.3
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track*
*SSVC
Descriptions

A heap-based buffer over-read vulnerability was found in the X.org server's ProcXIGetSelectedEvents() function. This issue occurs when byte-swapped length values are used in replies, potentially leading to memory leakage and segmentation faults, particularly when triggered by a client with a different endianness. This vulnerability could be exploited by an attacker to cause the X server to read heap memory values and then transmit them back to the client until encountering an unmapped page, resulting in a crash. Despite the attacker's inability to control the specific memory copied into the replies, the small length values typically stored in a 32-bit integer can result in significant attempted out-of-bounds reads.

Se encontró una vulnerabilidad de sobrelectura del búfer basado en montón en la función ProcXIGetSelectedEvents() del servidor X.org. Este problema se produce cuando se utilizan valores de longitud de bytes intercambiados en las respuestas, lo que puede provocar pérdidas de memoria y errores de segmentación, especialmente cuando lo activa un cliente con una endianidad diferente. Un atacante podría aprovechar esta vulnerabilidad para hacer que el servidor X lea los valores de la memoria dinámica y luego los transmita de vuelta al cliente hasta encontrar una página no asignada, lo que provocaría un bloqueo. A pesar de la incapacidad del atacante para controlar la memoria específica copiada en las respuestas, los pequeños valores de longitud que normalmente se almacenan en un entero de 32 bits pueden dar como resultado importantes intentos de lecturas fuera de los límites.

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
Low
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
Single
Confidentiality
Partial
Integrity
Partial
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:Track*
Exploitation
None
Automatable
No
Tech. Impact
Total
* Organization's Worst-case Scenario
Timeline
  • 2024-03-28 CVE Reserved
  • 2024-04-04 CVE Published
  • 2024-04-26 EPSS Updated
  • 2024-11-24 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-126: Buffer Over-read
CAPEC
References (23)
URL Date SRC
URL Date SRC
Affected Vendors, Products, and Versions
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Centos
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Centos
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Oracle
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Linux
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Redhat
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Enterprise Linux
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Redhat
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Rhel Aus
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Redhat
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Rhel E4s
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Redhat
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Rhel Eus
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Redhat
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Rhel Tus
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Alma
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Linux
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Amazon
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Linux
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Canonical
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Ubuntu Linux
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Centos
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Centos
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Debian
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Debian Linux
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Fedoraproject
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Fedora
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Freebsd
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Freebsd
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Huawei
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Euleros
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Opensuse
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Leap
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Oracle
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Linux
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Redhat
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Enterprise Linux
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Redhat
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Rhel Aus
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Redhat
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Rhel E4s
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Redhat
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Rhel Eus
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Redhat
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Rhel Tus
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Rocky
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Linux
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Slackware
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Slackware Linux
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Suse
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Sle-module-basesystem
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Suse
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Sle-module-development-tools
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Suse
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Sle-sdk
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Suse
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Sle-we
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Suse
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Sle Hpc-espos
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Suse
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Sle Hpc-ltss
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Suse
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Sle Hpc
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Suse
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Sled
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Suse
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Sles-ltss
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Suse
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Sles
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Suse
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Sles Sap
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Suse
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Suse-manager-proxy
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Suse
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Suse-manager-server
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