CVE-2023-1194

Use-after-free in parse_lease_state()

Severity Score

8.1

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

An out-of-bounds (OOB) memory read flaw was found in parse_lease_state in the KSMBD implementation of the in-kernel samba server and CIFS in the Linux kernel. When an attacker sends the CREATE command with a malformed payload to KSMBD, due to a missing check of `NameOffset` in the `parse_lease_state()` function, the `create_context` object can access invalid memory.

Se encontró una falla de lectura de memoria Out-Of-Bounds (OOB) en parse_lease_state en la implementación KSMBD del servidor samba en el kernel y CIFS en el kernel de Linux. Cuando un atacante envía el comando CREATE con un payload mal formada a KSMBD, debido a una verificación faltante de `NameOffset` en la función `parse_lease_state()`, el objeto `create_context` puede acceder a memoria no válida.

*Credits: Red Hat would like to thank Pumpkin (@u1f383) (DEVCORE Internship Program, and NYCU Software Security LAB) for reporting this issue.

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2023-03-06 CVE Reserved
2023-11-03 CVE Published
2023-12-22 EPSS Updated
2024-08-02 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-125: Out-of-bounds Read
CWE-416: Use After Free

CAPEC

References (4)

URL	Tag	Source
https://access.redhat.com/security/cve/CVE-2023-1194	Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2154176	Issue Tracking
https://security.netapp.com/advisory/ntap-20231221-0006

URL	Date	SRC

URL	Date	SRC
https://www.spinics.net/lists/stable-commits/msg303065.html	2023-12-21

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.4 Search vendor "Linux" for product "Linux Kernel" and version " < 6.4"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				6.4 Search vendor "Linux" for product "Linux Kernel" and version "6.4"		rc1		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				6.4 Search vendor "Linux" for product "Linux Kernel" and version "6.4"		rc2		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				6.4 Search vendor "Linux" for product "Linux Kernel" and version "6.4"		rc3		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				6.4 Search vendor "Linux" for product "Linux Kernel" and version "6.4"		rc4		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				6.4 Search vendor "Linux" for product "Linux Kernel" and version "6.4"		rc5		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				37 Search vendor "Fedoraproject" for product "Fedora" and version "37"		-		Affected