VDB
ALPINE-CVE-2020-25681
ALPINE-CVE-2020-25681
PUBLISHED
CVSS 8.100000381469727 HIGH
A flaw was found in dnsmasq before version 2.83. A heap-based buffer overflow was discovered in the way RRSets are sorted before validating 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 a buffer overflow with arbitrary data in a heap memory segment, possibly executing code on the machine. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Risk Scores
CVSS v3.1
8.100000381469727
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Alpine:v3.17 | dnsmasq | 0, 0, 0 |
| Alpine:v3.16 | dnsmasq | 0, 0, 0 |
| Alpine:v3.19 | dnsmasq | 0, 0, 0 |
| Alpine:v3.20 | dnsmasq | 0, 0, 0 |
| Alpine:v3.11 | dnsmasq | 2.50-r1, 2.80-r5, 2.80-r4 |
| Alpine:v3.18 | dnsmasq | 0, 0, 0 |
| Alpine:v3.13 | dnsmasq | 2.61-r0, 2.61-r0, 2.59-r0 |
| Alpine:v3.21 | dnsmasq | 0, 0, 0 |
| Alpine:v3.15 | dnsmasq | 0, 0, 0 |
| Alpine:v3.22 | dnsmasq | 0, 0, 0 |
| Alpine:v3.12 | dnsmasq | 2.59-r1, 0, 2.46-r0 |
| Alpine:v3.23 | dnsmasq | 0, 0, 0 |
| Alpine:v3.14 | dnsmasq | 2.78-r0, 2.77-r0, 2.76-r4 |
| Alpine:v3.10 | dnsmasq | 2.76-r2, 2.76-r1, 2.76-r0 |
Timeline
- Jan 20, 2021 CVE Published
- Dec 3, 2025 CVE Updated
- Apr 30, 2026 Distribution Patch