vulnerability
Arch Linux: Arbitrary code execution (CVE-2020-25681)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 8 | (AV:N/AC:M/Au:N/C:P/I:P/A:C) | Jan 20, 2021 | Jul 11, 2025 | Nov 27, 2025 |
Severity
8
CVSS
(AV:N/AC:M/Au:N/C:P/I:P/A:C)
Published
Jan 20, 2021
Added
Jul 11, 2025
Modified
Nov 27, 2025
Description
A heap-based buffer overflow was discovered in dnsmasq before version 2.83 in the way it sorts RRSets before validating them with DNSSEC data. An attacker on the network, who can forge DNS replies such as that they are accepted as valid, could use this flaw to cause an overflow with arbitrary data in a heap-allocated memory, possibly executing code on the machine.
Solution
arch-linux-upgrade-latest
References
- CVE-2020-25681
- https://attackerkb.com/topics/CVE-2020-25681
- URL-https://bugzilla.redhat.com/show_bug.cgi?id=1881875
- URL-https://lists.debian.org/debian-lts-announce/2021/03/msg00027.html
- URL-https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QGB7HL3OWHTLEPSMLDGOMXQKG3KM2QME/
- URL-https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WYW3IR6APUSKOYKL5FT3ACTIHWHGQY32/
- URL-https://security.archlinux.org/ASA-202101-38
- URL-https://security.gentoo.org/glsa/202101-17
- URL-https://www.debian.org/security/2021/dsa-4844
- URL-https://www.jsof-tech.com/disclosures/dnspooq/
- CWE-122
NEW
Explore Exposure Command
Confidently identify and prioritize exposures from endpoint to cloud with full attack surface visibility and threat-aware risk context.