CVE-2023-26151 asyncua vulnerable to denial of service via infinite loop
An attacker can cause a denial of service by sending a malformed packet to the asyncua server, leading to an infinite loop and memory exhaustion.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-26151?
CVE-2023-26151 is a medium-severity denial of service vulnerability in asyncua, published on 3 Oct 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Versions of the package asyncua before 0.9.96 are vulnerable to Denial of Service (DoS) such that an attacker can send a malformed packet and as a result, the server will enter into an infinite loop and consume excessive memory.
Which versions are affected by CVE-2023-26151?
3 open source packages ship an affected version, including asyncua. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
asyncua PyPI | All versions | 0.9.96 |
asyncua PyPI | All versions | 0.9.96 |
asyncua PyPI | All versions | 0.9.96 |
Products include Freeopcua Opcua-Asyncio.
How do I fix CVE-2023-26151?
Upgrade asyncua to 0.9.96 or later.
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-2023-26151 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-26151 exists.
Other vulnerabilities in asyncua
Sources
Also known as GHSA-gfvq-mxw3-mfq3, PYSEC-2023-190, UBUNTU-CVE-2023-26151.