CVE-2022-22846 dnslib has DNS reply verification issue
The dnslib Python library fails to validate DNS transaction IDs, allowing attackers to spoof DNS responses and bypass security controls.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-22846?
CVE-2022-22846 is a high-severity vulnerability in n/a, published on 9 Jan 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The dnslib package through 0.9.16 for Python does not verify that the ID value in a DNS reply matches an ID value in a query.
Which versions are affected by CVE-2022-22846?
3 open source packages ship an affected version, including dnslib. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
dnslib PyPI | All versions | 0.9.17 |
dnslib PyPI | All versions | 0.9.17 |
dnslib PyPI | All versions | 0.9.17 |
Products include Dnslib Project Dnslib.
How do I fix CVE-2022-22846?
Upgrade dnslib to 0.9.17 or later.
Is CVE-2022-22846 being exploited?
There is no known exploitation of CVE-2022-22846 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2022-22846, GHSA-r478-c2pc-m7gx, PYSEC-2022-4, UBUNTU-CVE-2022-22846.