CVE-2016-7073: Input Validation
First published: Tue Sep 11 2018(Updated: )
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.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/pdns | 4.1.6-3+deb10u1 4.4.1-1 4.7.3-2 4.8.3-1 4.8.3-2 | |
| debian/pdns-recursor | 4.1.11-1+deb10u1 4.4.2-3 4.8.4-1 4.9.1-3 4.9.1-4 | |
| PowerDNS | <3.4.11 | |
| PowerDNS | >=4.0.0<4.0.2 | |
| PowerDNS | <3.7.4 | |
| PowerDNS | >=4.0.0<4.0.4 | |
| Debian Linux | =8.0 |
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Reference Links
Frequently Asked Questions
What is CVE-2016-7073?
CVE-2016-7073 is a vulnerability found in PowerDNS versions before 3.4.11 and 4.0.2, and PowerDNS recursor before 4.0.4, that allows an attacker in a man-in-the-middle position to alter the content of an AXFR due to insufficient validation of TSIG signatures.
What software versions are affected by CVE-2016-7073?
PowerDNS Authoritative versions up to 3.4.11 and 4.0.2, PowerDNS Recursor versions up to 3.7.4 and 4.0.4, and Debian Linux version 8.0 are affected by CVE-2016-7073.
How severe is CVE-2016-7073?
CVE-2016-7073 has a severity score of 5.9, which is considered medium.
What is the remedy for CVE-2016-7073?
Updating to PowerDNS versions 4.1.6-3+deb10u1, 4.4.1-1, 4.7.3-2, 4.8.3-1, or 4.8.3-2 for PowerDNS Authoritative, and 4.1.11-1+deb10u1, 4.4.2-3, 4.8.4-1, 4.9.1-3, or 4.9.1-4 for PowerDNS Recursor is recommended to fix CVE-2016-7073.
Where can I find more information about CVE-2016-7073?
You can find more information about CVE-2016-7073 in the following references: [1] [2] [3]
- collector/security-tracker-debian
- agent/type
- collector/mitre-cve
- source/MITRE
- agent/author
- agent/severity
- agent/references
- agent/weakness
- agent/last-modified-date
- agent/description
- agent/event
- agent/first-publish-date
- agent/source
- agent/tags
- agent/softwarecombine
- collector/nvd-index
- agent/software-canonical-lookup-request
- package-manager/debian
- vendor/powerdns
- canonical/powerdns
- version/powerdns/4.0.0
- vendor/debian
- canonical/debian linux
- version/debian linux/8.0