VDB
CVE-2020-25681
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.
EPSS 81.19% · 99.6th percentile
Risk Scores
CVSS 3.1
8.100000381469727
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score
81.19%
99.6th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:16.04:LTS | dnsmasq | 0, 2.75-1, 2.75-1ubuntu0.16.04.1 |
| Ubuntu:18.04:LTS | dnsmasq | 0, 2.78-1, 2.78-3 |
| Ubuntu:20.04:LTS | dnsmasq | 0, 2.80-1ubuntu2, 2.80-1ubuntu4 |
Timeline
- Jan 18, 2021 CVE Published
- Jan 20, 2021 PoC Published
- Apr 14, 2021 EPSS Score
- Jan 6, 2022 EPSS Score
- Feb 4, 2022 EPSS Score
- Apr 1, 2022 EPSS Score
- Mar 7, 2023 EPSS Score
- Oct 6, 2023 EPSS Score
- Nov 8, 2023 EPSS Score
- Nov 9, 2024 EPSS Score
- Nov 24, 2024 EPSS Score
- Dec 11, 2024 EPSS Score
References
- https://ubuntu.com/security/CVE-2020-25681 third-party-advisory
- https://www.jsof-tech.com/disclosures/dnspooq/ third-party-advisory
- http://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2021q1/014599.html third-party-advisory
- https://ubuntu.com/security/notices/USN-4698-1 vendor-advisory
- https://www.cve.org/CVERecord?id=CVE-2020-25681 third-party-advisory