CVE-2016-7073 is a medium-severity vulnerability affecting PowerDNS authoritative servers before 3.4.11 and 4.0.2, and PowerDNS recursors before 4.0.4. The flaw stems from insufficient validation of TSIG signatures during AXFR (zone transfer) operations, specifically a missing check for TSIG time and fudge values. This allows a man-in-the-middle attacker to alter AXFR content through a replay attack, potentially leading to data integrity compromise (I:H). The attack complexity is high (AC:H), but requires no user interaction (UI:N) and can be executed over the network (AV:N). There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 3.4.11CPE matchmatch criteria | cpe:2.3:a:powerdns:authoritative:*:*:*:*:*:*:*:* | ||
>= 4.0.0, < 4.0.2CPE matchmatch criteria | cpe:2.3:a:powerdns:authoritative:*:*:*:*:*:*:*:* | ||
< 3.7.4CPE matchmatch criteria | cpe:2.3:a:powerdns:recursor:*:*:*:*:*:*:*:* | ||
>= 4.0.0, < 4.0.4CPE matchmatch criteria | cpe:2.3:a:powerdns:recursor:*:*:*:*:*:*:*:* | ||
8.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.