Intrusion PreventionDNSmasq.sort_rrset.CVE-2020-25687.Out.of.Bounds.Write
Description
This indicates an attack attempt to exploit an Out of Bounds Write Vulnerability in Dnsmasq.
The vulnerability is in sorting RR records in the sort_rrset() function. A remote, unauthenticated attacker can exploit this vulnerability by sending a DNS query to a Dnsmasq server that receives a malicious DNS response. Successful exploitation could result in arbitrary code execution in the security context of the Dnsmasq process. Unsuccessful exploitation results in a crash of the Dnsmasq process leading to a denial-of-service condition.
Affected Products
Dnsmasq Dnsmasq prior to 2.83
Impact
System Compromise: Remote attackers can gain control of vulnerable systems.
Recommended Actions
Apply the most recent upgrade or patch from the vendor.
http://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2021q1/014599.html
Telemetry
Coverage
| IPS (Regular DB) | |
| IPS (Extended DB) |
Version Updates
| Date | Version | Detail |
|---|---|---|
| 2021-03-09 | 18.032 | Sig Added |
| 2021-03-01 | 17.024 | Default_action:pass:drop |
| 2021-02-16 | 17.017 |
| ID | 49823 |
| Created | Feb 08, 2021 |
| Updated | Mar 08, 2021 |
| Risk |
|
| CVE ID | CVE-2020-25687 |
| Exploit Prediction Score | 8.45% |
| Default Action | drop |
| Active | |
| Affected OS | Linux |
| Affected App | Other |