#VU105995 Input validation error in smartdns - CVE-2024-24199

Vulnerability identifier: #VU105995

Vulnerability risk: Medium

CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-24199

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
smartdns
Server applications / DNS servers

Vendor: Nick Peng

Description

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

The vulnerability exists due to insufficient validation of user-supplied input in src/dns.c. A remote attacker can pass specially crafted DNS response to the server and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

smartdns: 18 - 43

---

External links
https://github.com/pymumu/smartdns/issues/1628

---

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.