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Infinite Loop in rencode

High severity GitHub Reviewed Published Sep 13, 2021 to the GitHub Advisory Database • Updated Jan 27, 2023

Package

pip rencode (pip)

Affected versions

<= 1.0.6

Patched versions

None

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.

References

Published by the National Vulnerability Database Sep 10, 2021
Reviewed Sep 13, 2021
Published to the GitHub Advisory Database Sep 13, 2021
Last updated Jan 27, 2023

Severity

High
7.5
/ 10

CVSS base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses

CVE ID

CVE-2021-40839

GHSA ID

GHSA-gh8j-2pgf-x458

Source code

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