Debian update for netty

Published: 2023-11-18 | Updated: 2024-12-06

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	Debian Linux Operating systems & Components / Operating system netty (Debian package) Operating systems & Components / Operating system package or component
Vendor	Debian

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Resource exhaustion

EUVDB-ID: #VU77573

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

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 netty package to one of the following versions: 1:4.1.48-4+deb11u2, 1:4.1.48-7+deb12u1.

Vulnerable software versions

Debian Linux: All versions

netty (Debian package): before 1:4.1.48-4+deb11u2

CPE2.3

External links

https://www.debian.org/security/2023/dsa-5558

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

CVSSv4.0: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:A/U:Amber]

CVE-ID: CVE-2023-44487