CVE-2021-36161 Unprotected input value toString cause RCE
Attackers can achieve remote code execution by providing malicious input that triggers unsafe toString methods in Apache Dubbo components.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-36161?
CVE-2021-36161 is a critical code injection vulnerability in Apache Dubbo, published on 9 Sep 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Some component in Dubbo will try to print the formated string of the input arguments, which will possibly cause RCE for a maliciously customized bean with special toString method. In the latest version, we fix the toString call in timeout, cache and some other places. Fixed in Apache Dubbo 2.7.13
Weakness: CWE-134
Which versions are affected by CVE-2021-36161?
2 open source packages ship an affected version, including org.apache.dubbo:dubbo. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
org.apache.dubbo:dubbo Maven | All versions | 2.7.13 |
org.apache.dubbo:dubbo Maven | All versions | 2.7.13 |
Products include Apache Dubbo.
How do I fix CVE-2021-36161?
Upgrade org.apache.dubbo:dubbo to 2.7.13 or later.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2021-36161 being exploited?
There is no known exploitation of CVE-2021-36161 in the wild and no public exploit code.
Other vulnerabilities in Apache Dubbo
- CVE-2023-29234 Bypass serialize checks in Apache Dubbo
- CVE-2023-46279 Apache Dubbo: Bypass deny serialize list check in Apache Dubbo
- CVE-2021-32824 Regular expression Denial of Service in MooTools
- CVE-2022-39198 Apache Dubbo Hession Deserialization Vulnerability Gadgets Bypass
- CVE-2021-43297 Dubbo Hessian cause RCE when parse error
Sources
Also known as GHSA-qvm7-23cj-437v.