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ubuntucveUbuntu.comUB:CVE-2023-46239
HistoryOct 31, 2023 - 12:00 a.m.

CVE-2023-46239

2023-10-3100:00:00
ubuntu.com
ubuntu.com
5
quic-go
vulnerability
remote attackers
nil pointer
handshake
panic
patch

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

AI Score

6.3

Confidence

High

EPSS

0.001

Percentile

27.9%

quic-go is an implementation of the QUIC protocol in Go. Starting in
version 0.37.0 and prior to version 0.37.3, by serializing an ACK frame
after the CRYTPO that allows a node to complete the handshake, a remote
node could trigger a nil pointer dereference (leading to a panic) when the
node attempted to drop the Handshake packet number space. An attacker can
bring down a quic-go node with very minimal effort. Completing the QUIC
handshake only requires sending and receiving a few packets. Version 0.37.3
contains a patch. Versions before 0.37.0 are not affected.

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

AI Score

6.3

Confidence

High

EPSS

0.001

Percentile

27.9%