CVE-2023-39322

Memory exhaustion in QUIC connection handling in crypto/tls

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

QUIC connections do not set an upper bound on the amount of data buffered when reading post-handshake messages, allowing a malicious QUIC connection to cause unbounded memory growth. With fix, connections now consistently reject messages larger than 65KiB in size.

Las conexiones QUIC no establecen un límite superior en la cantidad de datos almacenados en el búfer al leer mensajes post-handshake, lo que permite que una conexión QUIC maliciosa provoque un crecimiento ilimitado de la memoria. Con la solución aplicada, las conexiones ahora rechazan sistemáticamente los mensajes de más de 65 KiB de tamaño.

A flaw was found in Golang. QUIC connections do not set an upper bound on the amount of data buffered when reading post-handshake messages, allowing a malicious QUIC connection to cause unbounded memory growth. With the fix, connections now consistently reject messages larger than 65KiB in size.

*Credits: Marten Seemann

CVSS Scores

NISTv3.1 7.5

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2023-07-27 CVE Reserved
2023-09-08 CVE Published
2024-08-02 CVE Updated
2024-09-14 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-770: Allocation of Resources Without Limits or Throttling

CAPEC

References (8)

URL	Tag	Source
https://go.dev/issue/62266	Issue Tracking
https://groups.google.com/g/golang-dev/c/2C5vbR-UNkI/m/L1hdrPhfBAAJ	Mailing List
https://security.gentoo.org/glsa/202311-09
https://security.netapp.com/advisory/ntap-20231020-0004	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://go.dev/cl/523039	2023-11-25

URL	Date	SRC
https://pkg.go.dev/vuln/GO-2023-2045	2023-11-25
https://access.redhat.com/security/cve/CVE-2023-39322	2024-05-29
https://bugzilla.redhat.com/show_bug.cgi?id=2237778	2024-05-29

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Golang Search vendor "Golang"		Go Search vendor "Golang" for product "Go"				>= 1.21.0 < 1.21.1 Search vendor "Golang" for product "Go" and version " >= 1.21.0 < 1.21.1"		-		Affected