Memory Leak Denial of Service in Privoxy
Summary
CVE-2021-20216: A flaw was found in Privoxy in versions before 3.0.31. Affects privoxy versions < 3.0.31-r0. Fixed in 3.0.31-r0. How to fix ↓
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Background
Privoxy is an open-source web proxy server that provides advanced filtering capabilities for enhancing privacy, modifying web page data, and managing cookies. It is commonly used to improve security and control access to websites. However, a vulnerability has been discovered in Privoxy versions before 3.0.31 that can lead to a memory leak and subsequent denial of service.
Vulnerability Detail
The vulnerability (CVE-2021-20216) in Privoxy arises from a memory leak that occurs when decompression fails unexpectedly. This flaw can be exploited by an attacker to exhaust system resources, resulting in a denial of service. The highest threat from this vulnerability is to system availability. It is important to note that the vulnerability has a CVSS score of 7.5, indicating a high severity level.
How To Fix
Minimum fixed version
3.0.31-r0
This is the first release that contains the fix.
sudo apk add --upgrade privoxyTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
There is no specific workaround mentioned for this vulnerability. The recommended solution is to update Privoxy to the latest version.
Conclusion
In conclusion, the vulnerability (CVE-2021-20216) in Privoxy can lead to a memory leak and denial of service. It is crucial to update Privoxy to version 3.0.31 or later to mitigate this vulnerability. For further support on vulnerability remediation, you can reach out to DevNack.com.
See every vulnerability recorded for privoxy →
FAQ
Privoxy is an open-source web proxy server that provides advanced filtering capabilities for enhancing privacy, modifying web page data, and managing cookies.
The vulnerability can lead to a memory leak and subsequent denial of service, potentially affecting the availability of the system.
The CVSS score of this vulnerability is 7.5, indicating a high severity level.
To fix this vulnerability, it is recommended to update Privoxy to version 3.0.31 or later.
There is no specific workaround mentioned for this vulnerability. The recommended solution is to update Privoxy to the latest version.
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