CVE-2020-25681
Severity
8.1HIGH
EPSS
45.4%
top 2.39%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedJan 20
Latest updateMay 24
Description
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…
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 2.2 | Impact: 5.9
Affected Packages4 packages
Also affects: Debian Linux 10.0, 9.0, Fedora 32, 33
Patches
🔴Vulnerability Details
5📋Vendor Advisories
5Cisco
▶
Microsoft▶
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 D↗2021-01-12
Debian▶
CVE-2020-25681: dnsmasq - A flaw was found in dnsmasq before version 2.83. A heap-based buffer overflow wa...↗2020
💬Community
1Bugzilla▶
CVE-2020-25681 dnsmasq: heap-based buffer overflow in sort_rrset() when DNSSEC is enabled↗2020-09-23