Ubuntu update for netty

Published: 2024-09-09 | Updated: 2024-09-20

Risk	High
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2023-34462 CVE-2023-44487
CWE-ID	CWE-400
Exploitation vector	Network
Public exploit	Vulnerability #2 is being exploited in the wild.
Vulnerable software Subscribe	Ubuntu Operating systems & Components / Operating system libnetty-java (Ubuntu package) Operating systems & Components / Operating system package or component
Vendor	Canonical Ltd.

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Resource exhaustion

EUVDB-ID: #VU77573

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-34462

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to application does not properly control consumption of internal resources if no idle timeout handler was configured. A remote attacker can send a client hello packet, which leads the server to buffer up to 16MB of data per connection and results in a denial of service condition.

Mitigation

Update the affected package netty to the latest version.

Vulnerable software versions

Ubuntu: 22.04

libnetty-java (Ubuntu package): before 1:4.1.48-4+deb11u2build0.22.04.1

CPE2.3

cpe:2.3:o:canonical:ubuntu:22.04:*:*:*:*:*:*:

External links

http://ubuntu.com/security/notices/USN-6994-1

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Resource exhaustion

EUVDB-ID: #VU81728

Risk: High

CVSSv3.1: 5.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:H/RL:O/RC:C]

CVE-ID: CVE-2023-44487