#VU101681 Predictable Seed in Pseudo-Random Number Generator (PRNG) in Avahi - CVE-2024-52616

Vulnerability identifier: #VU101681

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-52616

CWE-ID: CWE-337

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Avahi
Universal components / Libraries / Libraries used by multiple products

Vendor: avahi.org

Description

The vulnerability allows a remote attacker to perform spoofing attack.

The vulnerability exists due to software initializes DNS transaction IDs randomly only once at startup, incrementing them sequentially after that. A remote attacker can predict subsequent transaction IDs and perform DNS spoofing attack.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

Avahi: 0.1 - 0.8

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External links
https://bugzilla.redhat.com/show_bug.cgi?id=2326429

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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.