CVE-2020-35139 FaucetSDN Ryu Denial of Service Vulnerability
Remote attackers can cause a denial of service via an infinite loop in the Faucet SDN Ryu controller's message parser.
- 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-2020-35139?
CVE-2020-35139 is a high-severity denial of service vulnerability in n/a, published on 11 Aug 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An issue was discovered in OFPBundleCtrlMsg in parser.py in Faucet SDN Ryu version 4.34, allows remote attackers to cause a denial of service (DoS) (infinite loop).
Weakness: CWE-835
Which versions are affected by CVE-2020-35139?
3 open source packages ship an affected version, including ryu. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
ryu PyPI | All versions to 4.34 | None |
ryu PyPI | All versions to 4.34 | None |
ryu PyPI | All versions to 4.34 | None |
Products include Faucet Ryu.
How do I fix CVE-2020-35139?
No fix has been published for CVE-2020-35139 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-2020-35139 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-35139 exists.
Other vulnerabilities in n/a
Sources
Also known as GHSA-4987-5p3p-9r27, PYSEC-2026-1876.