CVE-2021-40839

Common vulnerabilities & exposures (CVE)

CVE database CVE database blogpost Release & EoL database

Published at: - 10-09-2021 04:15

Last modified: - 22-02-2022 03:48

Total changes: - 6

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.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Low

Attack complexity

Network

Attack vector

High

Availability

None

Confidentiality

None

Integrity

None

Privileges required

Unchanged

Scope

None

User interaction

7.5

Base score

3.9

3.6

Exploitability score

Impact score

Verification logic

vendor=rencode_project AND product=rencode AND target_software=python AND versionEndIncluding=1.0.6

vendor=fedoraproject AND product=fedora AND version=34

vendor=fedoraproject AND product=fedora AND version=35

Reference

https://github.com/aresch/rencode/pull/29
https://pypi.org/project/rencode/#history
https://seclists.org/fulldisclosure/2021/Sep/16
https://github.com/aresch/rencode/commit/572ff74586d9b1daab904c6f7f7009ce0143bb75
https://security.netapp.com/advisory/ntap-20211008-0001/
FEDORA-2022-02340931ec-Mailing List, Third Party Advisory
FEDORA-2022-1033a2718b-Mailing List, Third Party Advisory

Keywords

CVE-2021-40839

Common vulnerabilities & exposures (CVE)

Description

Common Vulnerability Scoring System (CVSS)

Verification logic

Reference

NVD

CVE-2021-40839

CVE

Common vulnerabilities & exposures

CVSS

Common vulnerability scoring system

Security

Vulnerabilities

Exposures