CVE-2022-3488 named may terminate unexpectedly when processing ECS options in repeated responses to iterative queries
Attackers can cause BIND DNS server to crash by sending crafted iterative queries with broken ECS options, leading to denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2022-3488?
CVE-2022-3488 is a high-severity denial of service vulnerability in Isc Bind, published on 25 Jan 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Processing of repeated responses to the same query, where both responses contain ECS pseudo-options, but where the first is broken in some way, can cause BIND to exit with an assertion failure.
'Broken' in this context is anything that would cause the resolver to reject the query response, such as a mismatch between query and answer name. This issue affects BIND 9 versions 9.11.4-S1 through 9.11.37-S1 and 9.16.8-S1 through 9.16.36-S1.
Weakness: CWE-617
Which versions are affected by CVE-2022-3488?
It affects 1 product.
Products include Isc Bind.
How do I fix CVE-2022-3488?
No fix has been published for CVE-2022-3488 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2022-3488 being exploited?
There is no known exploitation of CVE-2022-3488 in the wild and no public exploit code.
Other vulnerabilities in Isc Bind
Sources
Also known as GHSA-pq6j-95q4-4mhj.