Debian update for bind9

Published: 2023-09-23

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2023-3341 CVE-2023-4236
CWE-ID	CWE-400
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	Debian Linux Operating systems & Components / Operating system bind9 (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: #VU80931

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-2023-3341

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 when handling control channel messages . A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation

Update bind9 package to one of the following versions: 1:9.16.44-1~deb11u1, 1:9.18.19-1~deb12u1.

Vulnerable software versions

Debian Linux: All versions

bind9 (Debian package): before 1:9.18.19-1~deb12u1

External links

http://www.debian.org/security/2023/dsa-5504

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: #VU80930