CVE-2016-7073

Description

An issue has been found in PowerDNS before 3.4.11 and 4.0.2, and PowerDNS recursor before 4.0.4, allowing an attacker in position of man-in-the-middle to alter the content of an AXFR because of insufficient validation of TSIG signatures. A missing check of the TSIG time and fudge values was found in AXFRRetriever, leading to a possible replay attack.

CVSS Metrics

• v3.0•MEDIUM•Score: 5.3CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
• v3.0•MEDIUM•Score: 5.9CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
• v2.0•MEDIUM•Score: 4.3AV:N/AC:M/Au:N/C:N/I:P/A:N

EPSS Trends

Current EPSS score: 1.23%• Percentile: 68%

Techniques & Countermeasures

• CWE-20•Improper Input Validation

  The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

Affected Systems

• debian•pdns

  < 4.0.2-1 | < 4.0.2-1 | < 4.0.2-1 | < 4.0.2-1

• debian•pdns-recursor

  < 4.0.4-1 | < 4.0.4-1 | < 4.0.4-1 | < 4.0.4-1

• debian•debian_linux

  8.0

• open-xchange•pdns

  3.4.11 | 4.0.2 | 4.0.4

• powerdns•authoritative

  < 3.4.11 | ≥ 4.0.0, < 4.0.2

• powerdns•recursor

  < 3.7.4 | ≥ 4.0.0, < 4.0.4

References (4)

• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-7073
• https://www.debian.org/security/2017/dsa-3764
• https://doc.powerdns.com/md/security/powerdns-advisory-2016-04/
• https://security-tracker.debian.org/tracker/CVE-2016-7073