An issue was discovered in PowerDNS Authoritative through 4.3.0 when --enable-experimental-gss-tsig is used. A remote, unauthenticated attacker might be able to cause a double-free, leading to a crash or possibly arbitrary code execution. by sending crafted queries with a GSS-TSIG signature.
The product calls free() twice on the same memory address.
Link | Tags |
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https://doc.powerdns.com/authoritative/security-advisories/powerdns-advisory-2020-06.html | vendor advisory |