vulnerability
CentOS Linux: CVE-2021-3448: Moderate: dnsmasq security and bug fix update (CESA-2021:4153)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 4 | (AV:N/AC:M/Au:N/C:N/I:P/A:N) | 2021-04-08 | 2021-11-10 | 2023-05-25 |
Severity
4
CVSS
(AV:N/AC:M/Au:N/C:N/I:P/A:N)
Published
2021-04-08
Added
2021-11-10
Modified
2023-05-25
Description
A flaw was found in dnsmasq in versions before 2.85. When configured to use a specific server for a given network interface, dnsmasq uses a fixed port while forwarding queries. An attacker on the network, able to find the outgoing port used by dnsmasq, only needs to guess the random transmission ID to forge a reply and get it accepted by dnsmasq. This flaw makes a DNS Cache Poisoning attack much easier. The highest threat from this vulnerability is to data integrity.
Solution(s)
centos-upgrade-dnsmasqcentos-upgrade-dnsmasq-debuginfocentos-upgrade-dnsmasq-debugsourcecentos-upgrade-dnsmasq-utilscentos-upgrade-dnsmasq-utils-debuginfo
References
NEW
Explore Exposure Command
Confidently identify and prioritize exposures from endpoint to cloud with full attack surface visibility and threat-aware risk context.