Rapid7 Vulnerability & Exploit Database

FreeBSD: VID-70D0D2EC-CB62-11ED-956F-7054D21A9E2A (CVE-2021-40839): py39-rencode -- infinite loop that could lead to Denial of Service

Free InsightVM Trial No Credit Card Necessary
2024 Attack Intel Report Latest research by Rapid7 Labs
Back to Search

FreeBSD: VID-70D0D2EC-CB62-11ED-956F-7054D21A9E2A (CVE-2021-40839): py39-rencode -- infinite loop that could lead to Denial of Service

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
09/09/2021
Created
05/05/2023
Added
04/14/2023
Modified
04/14/2023

Description

The rencode package through 1.0.6 for Python allows an infinite loop in typecode decoding (such as via ;\x2f\x7f), enabling a remote attack that consumes CPU and memory.

Solution(s)

  • freebsd-upgrade-package-py39-rencode

References

  • CVE-2021-40839

insightVM

Advanced vulnerability management analytics and reporting.
Key Features
Free InsightVM Trial View All Features

With Rapid7 live dashboards, I have a clear view of all the assets on my network, which ones can be exploited, and what I need to do in order to reduce the risk in my environment in real-time. No other tool gives us that kind of value and insight.

– Scott Cheney, Manager of Information Security, Sierra View Medical Center

;