Cloud Vulnerability DB
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Vulnerability DatabaseCVE-2020-35141
CVE-2020-35141:
Python vulnerability analysis and mitigation
Overview
An issue was discovered in OFPQueueGetConfigReply in parser.py in Faucet SDN Ryu version 4.34, which allows remote attackers to cause a denial of service (DoS) through an infinite loop condition (NVD, CVE).
Technical details
The vulnerability exists in the OFPQueueGetConfigReply parser implementation where a queue with length=0 causes an infinite loop in the while loop condition. The issue occurs in /ryu/ofproto/ofprotov13_parser.py around line 6073, where the offset variable fails to increment when queue.len is 0, resulting in an endless loop. The vulnerability has been assigned a CVSS v3.1 Base Score of 7.5 HIGH with vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H (NVD).
Impact
When exploited, this vulnerability can lead to a denial of service condition by causing the parser to enter an infinite loop, potentially consuming system resources and affecting the availability of the service (NVD).
Mitigation and workarounds
Users should upgrade to a version newer than Faucet SDN Ryu 4.34 that contains the fix for this vulnerability. No specific workarounds have been publicly documented (NVD).
Additional resources
Source: This report was generated using AI
Related Python vulnerabilities:
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