vulnerability
Arch Linux: Insufficient validation (CVE-2021-3672)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:N/AC:M/Au:N/C:P/I:P/A:P) | Nov 23, 2021 | Jul 11, 2025 | Nov 27, 2025 |
Severity
7
CVSS
(AV:N/AC:M/Au:N/C:P/I:P/A:P)
Published
Nov 23, 2021
Added
Jul 11, 2025
Modified
Nov 27, 2025
Description
Missing input validation of host names returned by Domain Name Servers in the c-ares library before version 1.17.2 can lead to output of wrong hostnames (leading to domain hijacking).
Solution
arch-linux-upgrade-latest
References
- CVE-2021-3672
- https://attackerkb.com/topics/CVE-2021-3672
- URL-https://bugzilla.redhat.com/show_bug.cgi?id=1988342
- URL-https://c-ares.haxx.se/adv_20210810.html
- URL-https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
- URL-https://security.archlinux.org/ASA-202108-13
- URL-https://security.gentoo.org/glsa/202401-02
- URL-https://www.oracle.com/security-alerts/cpujul2022.html
- CWE-79
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