CVE-2021-43116 Use of Hard-coded Credentials in Nacos
Attackers can bypass authentication in Nacos by manipulating login response packets, allowing unauthorized access to the system.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-43116?
CVE-2021-43116 is a high-severity authentication bypass vulnerability in n/a, published on 5 Jul 2022. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
An Access Control vulnerability exists in Nacos 2.0.3 in the access prompt page; enter username and password, click on login to capture packets and then change the returned package, which lets a malicious user login.
Weakness: CWE-287
Which versions are affected by CVE-2021-43116?
2 open source packages ship an affected version, including com.alibaba.nacos:nacos-client. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
com.alibaba.nacos:nacos-client Maven | All versions to 2.0.3 | None |
com.alibaba.nacos:nacos-client Maven | All versions to 2.0.3 | None |
Products include Alibaba Nacos.
How do I fix CVE-2021-43116?
No fix has been published for CVE-2021-43116 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2021-43116 being exploited?
There is no known exploitation of CVE-2021-43116 in the wild and no public exploit code.
Public exploit code: 1 Exploit-DB entry.
Other vulnerabilities in n/a
Sources
Also known as GHSA-2g86-r6w2-wqqr.