CVE-2021-40839

CVSS V2 Medium 5 CVSS V3 High 7.5
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.
Overview
  • CVE ID
  • CVE-2021-40839
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-09-10T02:15:07
  • Last Modified Date
  • 2022-02-22T14:48:41
Weakness Enumerations
CWE URL
CWE-835 http://cwe.mitre.org/data/definitions/835.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:rencode_project:rencode:*:*:*:*:*:python:*:* 1 OR 1.0.6
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:N/I:N/A:P
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • PARTIAL
  • Base Score
  • 5
  • Severity
  • MEDIUM
  • Exploitability Score
  • 10
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • HIGH
  • Base Score
  • 7.5
  • Base Severity
  • HIGH
  • Exploitability Score
  • 3.9
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://github.com/aresch/rencode/pull/29 Patch Third Party Advisory
https://pypi.org/project/rencode/#history Third Party Advisory
https://seclists.org/fulldisclosure/2021/Sep/16 Mailing List Third Party Advisory
https://github.com/aresch/rencode/commit/572ff74586d9b1daab904c6f7f7009ce0143bb75 Patch Third Party Advisory
https://security.netapp.com/advisory/ntap-20211008-0001/ Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BMVQRPDVSVZNGGX57CFKCYT3DEYO4QB6/ Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MCLETLGVM5DBX6QNHQFW6TWGO5T3DENY/ Mailing List Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-40839
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-40839
History
Created Old Value New Value Data Type Notes
2022-05-10 06:31:58 Added to TrackCVE
2022-12-05 10:19:59 2021-09-10T02:15Z 2021-09-10T02:15:07 CVE Published Date updated
2022-12-05 10:19:59 2022-02-22T14:48:41 CVE Modified Date updated
2022-12-05 10:19:59 Analyzed Vulnerability Status updated