Ubuntu update for bind9



Risk Low
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2024-11187
CVE-2024-12705
CWE-ID CWE-400
CWE-399
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Ubuntu
Operating systems & Components / Operating system

bind9 (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: #VU103436

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-2024-11187

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 DNS zones with numerous records in the Additional section. A remote attacker can trigger resource exhaustion by sending multiple queries to he affected server and perform a denial of service (DoS) attack.

Mitigation

Update the affected package bind9 to the latest version.

Vulnerable software versions

Ubuntu: 20.04 - 24.10

bind9 (Ubuntu package): before 1:9.18.30-0ubuntu0.20.04.2

CPE2.3 External links

https://ubuntu.com/security/notices/USN-7241-1


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 management error

EUVDB-ID: #VU103437

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:]

CVE-ID: CVE-2024-12705

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: No

Description

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

The vulnerability exists due to improper management of internal resources within the application within the DNS-over-HTTPS feature. A remote attacker can send multiple HTTP/2 requests to the server and perform a denial of service (DoS) attack. The vulnerability affects both authoritative servers and resolvers.

Mitigation

Update the affected package bind9 to the latest version.

Vulnerable software versions

Ubuntu: 20.04 - 24.10

bind9 (Ubuntu package): before 1:9.18.30-0ubuntu0.20.04.2

CPE2.3 External links

https://ubuntu.com/security/notices/USN-7241-1


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.



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