CVE-2020-24698 Use after free in n/a
Remote attackers can trigger a double-free via crafted GSS-TSIG queries, potentially causing crashes or arbitrary code execution in PowerDNS Authoritative.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-24698?
CVE-2020-24698 is a critical use after free vulnerability in n/a, published on 2 Oct 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-415
Which versions are affected by CVE-2020-24698?
It affects 1 product.
Products include Powerdns Authoritative.
How do I fix CVE-2020-24698?
Apply the vendor's patch.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2020-24698 being exploited?
There is no known exploitation of CVE-2020-24698 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2020-24698, GHSA-h4gh-3gv9-c4vm.