Vulnerability identifier: #VU72145

Vulnerability risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-30295

CWE-ID: CWE-342

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
uClibC-ng
Universal components / Libraries / Libraries used by multiple products

Vendor: uclibc-ng.org

Description

The vulnerability allows a remote attacker to perform DNS cache poisoning.

The vulnerability exists due to software uses predictable DNS transaction IDs. A remote attacker can perform DNS cache poisoning.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

uClibC-ng: 1.0.0 - 1.0.40

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External links
http://www.nozominetworks.com/blog/nozomi-networks-discovers-unpatched-dns-bug-in-popular-c-standard-library-putting-iot-at-risk/
http://www.kb.cert.org/vuls/id/473698

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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.