Mageia 7 - MGASA-2020-0223 Moderate: PowerDNS Traffic Amplification
mageia
May 24, 2020
Updated pdns-recursor packages fix security vulnerabilities: An issue in the DNS protocol has been found that allow malicious parties to use recursive DNS services to attack third...
Summary
Updated pdns-recursor packages fix security vulnerabilities:
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 (CVE-2020-10995).
An issue has been found in PowerDNS Recursor 4.1.0 through 4.3.0 where
records in the answer section of a NXDOMAIN response lacking an SOA were
not properly validated in SyncRes::processAnswer. This would allow an
attacker in position of man-in-the-middle to send a NXDOMAIN answer for
a name that does exist, bypassing DNSSEC validation (CVE-2020-12244).
References
- https://bugs.mageia.org/show_bug.cgi?id=26645
- https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2020-01.html
- https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2020-02.html
- https://www.openwall.com/lists/oss-security/2020/05/19/3
- https://doc.powerdns.com/recursor/changelog/4.1.html#change-4.1.16
- https://www.cve.org/CVERecord?id=CVE-2020-10995
- https://www.cve.org/CVERecord?id=CVE-2020-12244
Topics Covered
Resolution
SRPMS
- 7/core/pdns-recursor-4.1.16-1.mga7
PREVIOUS
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Severity
important
Lowest
Low
Medium
High
Critical
Publication date: 24 May 2020
URL: https://advisories.mageia.org/MGASA-2020-0223.html
Type: security
CVE: CVE-2020-10995,
CVE-2020-12244
Topics Covered
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