CVE-2023-41419: Privilege Escalation in Gevent
Summary
CVE-2023-41419: An issue in Gevent before version 23.9.0 allows a remote attacker to escalate privileges via a crafted script to the WSGIServer component. Affects gevent across 2 version ranges.
< 2f53c851eaf926767fbac62385615efd4886221c
< 23.9.0
Fixed in 2f53c851eaf926767fbac62385615efd4886221c. How to fix ↓
Check if this vulnerability affects your application
Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.
No signup required · Results in about 60 seconds
Background
Gevent is a Python library that provides a high-level synchronous API on top of the libev or libuv event loop. It is commonly used for concurrent networking and distributed task scheduling. Gevent's WSGIServer component is responsible for serving WSGI applications over HTTP. This vulnerability affects Gevent versions prior to 23.9.1.
Vulnerability Detail
The vulnerability in Gevent allows a remote attacker to escalate privileges by exploiting a flaw in the WSGIServer component. By sending a specially crafted script, the attacker can execute arbitrary code with elevated privileges. This can lead to unauthorized access, data leakage, or further compromise of the affected system.
How To Fix
Minimum fixed version
2f53c851eaf926767fbac62385615efd4886221c
This is the first release that contains the fix.
pip install --upgrade "gevent==2f53c851eaf926767fbac62385615efd4886221c"Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
If upgrading Gevent is not immediately feasible, a possible workaround is to implement network-level controls to restrict access to the affected WSGIServer component. This can be achieved by using firewalls or other network security measures to limit incoming connections to trusted sources only.
Conclusion
In conclusion, the vulnerability in Gevent's WSGIServer component can be exploited by a remote attacker to escalate privileges. It is crucial to upgrade to the latest version of Gevent or implement network-level controls to mitigate the risk. For further support on vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for gevent →
FAQ
Gevent is a Python library that provides a high-level synchronous API for concurrent networking and distributed task scheduling.
The WSGIServer component in Gevent is responsible for serving WSGI applications over HTTP.
The vulnerability occurs due to a flaw in the WSGIServer component, which can be exploited by sending a specially crafted script.
The vulnerability can allow a remote attacker to escalate privileges, leading to unauthorized access, data leakage, or further compromise of the affected system.
To fix this vulnerability, it is recommended to upgrade Gevent to version 23.9.1 or later.
