Debian update for bind9



Published: 2024-07-11 | Updated: 2024-08-23
Risk Medium
Patch available YES
Number of vulnerabilities 6
CVE-ID CVE-2023-4408
CVE-2023-5517
CVE-2023-5679
CVE-2023-6516
CVE-2023-50387
CVE-2023-50868
CWE-ID CWE-400
CWE-617
Exploitation vector Network
Public exploit Public exploit code for vulnerability #5 is available.
Public exploit code for vulnerability #6 is available.
Vulnerable software
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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 6 vulnerabilities.

1) Resource exhaustion

EUVDB-ID: #VU86383

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-2023-4408

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 parsing DNS 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: 1:9.16.48-1, 1:9.18.24-1.

Vulnerable software versions

Debian Linux: All versions

bind9 (Debian package): before 1:9.18.24-1

External links

http://lists.debian.org/debian-security-announce/2024/msg00028.html


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) Reachable Assertion

EUVDB-ID: #VU86382

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-2023-5517

CWE-ID: CWE-617 - Reachable Assertion

Exploit availability: No

Description

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

The vulnerability exists due to a reachable assertion when querying RFC 1918 reverse zones. A remote attacker can send a specially crafted DNS query and perform a denial of service attack.

Mitigation

Update bind9 package to one of the following versions: 1:9.16.48-1, 1:9.18.24-1.

Vulnerable software versions

Debian Linux: All versions

bind9 (Debian package): before 1:9.18.24-1

External links

http://lists.debian.org/debian-security-announce/2024/msg00028.html


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.

3) Reachable Assertion

EUVDB-ID: #VU86381

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-2023-5679

CWE-ID: CWE-617 - Reachable Assertion

Exploit availability: No

Description

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

The vulnerability exists due to a reachable assertion caused by a bad interaction between DNS64 and serve-stale. A remote attacker can query a DNS64-enabled resolver for domain names triggering serve-stale.

Mitigation

Update bind9 package to one of the following versions: 1:9.16.48-1, 1:9.18.24-1.

Vulnerable software versions

Debian Linux: All versions

bind9 (Debian package): before 1:9.18.24-1

External links

http://lists.debian.org/debian-security-announce/2024/msg00028.html


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.

4) Resource exhaustion

EUVDB-ID: #VU86379

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-2023-6516

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 processing specific recursive patterns. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack against the DNS resolver.

Mitigation

Update bind9 package to one of the following versions: 1:9.16.48-1, 1:9.18.24-1.

Vulnerable software versions

Debian Linux: All versions

bind9 (Debian package): before 1:9.18.24-1

External links

http://lists.debian.org/debian-security-announce/2024/msg00028.html


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.

5) Resource exhaustion

EUVDB-ID: #VU86377

Risk: Medium

CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2023-50387

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: Yes

Description

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

The vulnerability exists due to improper input validation when processing DNSSEC related records. A remote attacker can trigger resource exhaustion by forcing the DNS server to query a specially crafted DNSSEC zone and perform a denial of service (DoS) attack.

Mitigation

Update bind9 package to one of the following versions: 1:9.16.48-1, 1:9.18.24-1.

Vulnerable software versions

Debian Linux: All versions

bind9 (Debian package): before 1:9.18.24-1

External links

http://lists.debian.org/debian-security-announce/2024/msg00028.html


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. However, proof of concept for this vulnerability is available.

6) Resource exhaustion

EUVDB-ID: #VU86378

Risk: Medium

CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2023-50868

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: Yes

Description

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

The vulnerability exists due to improper input validation when processing DNSSEC related records. A remote attacker can trigger resource exhaustion by forcing the DNS server to query a specially crafted DNSSEC zone and perform a denial of service (DoS) attack.

Mitigation

Update bind9 package to one of the following versions: 1:9.16.48-1, 1:9.18.24-1.

Vulnerable software versions

Debian Linux: All versions

bind9 (Debian package): before 1:9.18.24-1

External links

http://lists.debian.org/debian-security-announce/2024/msg00028.html


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. However, proof of concept for this vulnerability is available.



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