CVE-2020-10995
Description
PowerDNS Recursor from 4.1.0 up to and including 4.3.0 does not sufficiently defend against amplification attacks. An issue in the DNS protocol has been found that allow malicious parties to use recursive DNS services to attack third party authoritative name servers. The attack uses a crafted reply by an authoritative name server to amplify the resulting traffic between the recursive and other authoritative name servers. Both types of service can suffer degraded performance as an effect. This is triggered by random subdomains in the NSDNAME in NS records. PowerDNS Recursor 4.1.16, 4.2.2 and 4.3.1 contain a mitigation to limit the impact of this DNS protocol issue.
Affected products
5- PowerDNS/PowerDNS Recursordescription
- osv-coords4 versionspkg:rpm/opensuse/pdns-recursor&distro=openSUSE%20Leap%2015.1pkg:rpm/opensuse/pdns-recursor&distro=openSUSE%20Tumbleweedpkg:rpm/suse/pdns-recursor&distro=SUSE%20Package%20Hub%2012%20SP1pkg:rpm/suse/pdns-recursor&distro=SUSE%20Package%20Hub%2015%20SP1
< 4.1.12-bp151.4.3.1+ 3 more
- (no CPE)range: < 4.1.12-bp151.4.3.1
- (no CPE)range: < 4.5.5-1.3
- (no CPE)range: < 4.1.12-bp151.4.3.1
- (no CPE)range: < 4.1.12-bp151.4.3.1
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
6- lists.opensuse.org/opensuse-security-announce/2020-05/msg00052.htmlmitrevendor-advisoryx_refsource_SUSE
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NMP72NJGKBWR5WEBXAWX5KSLQUDFTG6S/mitrevendor-advisoryx_refsource_FEDORA
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PS4ZN5XGENYNFKX7QIIOUCQQHXE37GJF/mitrevendor-advisoryx_refsource_FEDORA
- www.debian.org/security/2020/dsa-4691mitrevendor-advisoryx_refsource_DEBIAN
- www.nxnsattack.commitrex_refsource_MISC
- doc.powerdns.com/recursor/security-advisories/powerdns-advisory-2020-01.htmlmitrex_refsource_CONFIRM
News mentions
0No linked articles in our index yet.