Debian update for maradns



Risk Medium
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2022-30256
CVE-2023-31137
CWE-ID CWE-399
CWE-191
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Debian Linux
Operating systems & Components / Operating system

maradns (Debian package)
Operating systems & Components / Operating system package or component

Vendor Debian

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Resource management error

EUVDB-ID: #VU77839

Risk: Medium

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

CVE-ID: CVE-2022-30256

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass expected security restrictions.

The vulnerability exists due to the way MaraDNS handles cached domain names. A revoked domain name can still be resolvable for a long time, including expired domains and taken-down malicious domains.

Mitigation

Update maradns package to version 2.0.13-1.4+deb11u1.

Vulnerable software versions

Debian Linux: All versions

maradns (Debian package): before 2.0.13-1.4+deb11u1

CPE2.3 External links

https://www.debian.org/security/2023/dsa-5441


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) Integer underflow

EUVDB-ID: #VU76669

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-2023-31137

CWE-ID: CWE-191 - Integer underflow

Exploit availability: No

Description

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

The vulnerability exists due to integer underflow when handling a DNS packet with an Answer RR of qtype 16 (TXT record) and any qclass. A remote attacker can send a specially crafted request to the server, trigger an integer underflow and perform a denial of service (DoS) attack.

Mitigation

Update maradns package to version 2.0.13-1.4+deb11u1.

Vulnerable software versions

Debian Linux: All versions

maradns (Debian package): before 2.0.13-1.4+deb11u1

CPE2.3 External links

https://www.debian.org/security/2023/dsa-5441


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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