CVE-2021-40839

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2021-40839
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.

7.5 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

5.0 /10

CVSS v2.0 : MEDIUM

V2 Legend

Vector : AV:N/AC:L/Au:N/C:N/I:N/A:P

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References
Link Resource
https://github.com/aresch/rencode/commit/572ff74586d9b1daab904c6f7f7009ce0143bb75 Patch Third Party Advisory
https://github.com/aresch/rencode/pull/29 Patch Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BMVQRPDVSVZNGGX57CFKCYT3DEYO4QB6/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MCLETLGVM5DBX6QNHQFW6TWGO5T3DENY/
https://pypi.org/project/rencode/#history Third Party Advisory
https://seclists.org/fulldisclosure/2021/Sep/16 Mailing List Third Party Advisory
https://security.netapp.com/advisory/ntap-20211008-0001/ Third Party Advisory
https://github.com/aresch/rencode/commit/572ff74586d9b1daab904c6f7f7009ce0143bb75 Patch Third Party Advisory
https://github.com/aresch/rencode/pull/29 Patch Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BMVQRPDVSVZNGGX57CFKCYT3DEYO4QB6/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MCLETLGVM5DBX6QNHQFW6TWGO5T3DENY/
https://pypi.org/project/rencode/#history Third Party Advisory
https://seclists.org/fulldisclosure/2021/Sep/16 Mailing List Third Party Advisory
https://security.netapp.com/advisory/ntap-20211008-0001/ Third Party Advisory
Configurations

Configuration 1 (hide)

cpe:2.3:a:rencode_project:rencode:*:*:*:*:*:python:*:*

Configuration 2 (hide)

OR cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
History

21 Nov 2024, 06:24

Type Values Removed Values Added
References () https://github.com/aresch/rencode/commit/572ff74586d9b1daab904c6f7f7009ce0143bb75 - Patch, Third Party Advisory () https://github.com/aresch/rencode/commit/572ff74586d9b1daab904c6f7f7009ce0143bb75 - Patch, Third Party Advisory
References () https://github.com/aresch/rencode/pull/29 - Patch, Third Party Advisory () https://github.com/aresch/rencode/pull/29 - Patch, Third Party Advisory
References () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BMVQRPDVSVZNGGX57CFKCYT3DEYO4QB6/ - () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BMVQRPDVSVZNGGX57CFKCYT3DEYO4QB6/ -
References () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MCLETLGVM5DBX6QNHQFW6TWGO5T3DENY/ - () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MCLETLGVM5DBX6QNHQFW6TWGO5T3DENY/ -
References () https://pypi.org/project/rencode/#history - Third Party Advisory () https://pypi.org/project/rencode/#history - Third Party Advisory
References () https://seclists.org/fulldisclosure/2021/Sep/16 - Mailing List, Third Party Advisory () https://seclists.org/fulldisclosure/2021/Sep/16 - Mailing List, Third Party Advisory
References () https://security.netapp.com/advisory/ntap-20211008-0001/ - Third Party Advisory () https://security.netapp.com/advisory/ntap-20211008-0001/ - Third Party Advisory

22 Feb 2022, 14:48

Type Values Removed Values Added
CPE cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
References (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MCLETLGVM5DBX6QNHQFW6TWGO5T3DENY/ - (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MCLETLGVM5DBX6QNHQFW6TWGO5T3DENY/ - Mailing List, Third Party Advisory
References (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BMVQRPDVSVZNGGX57CFKCYT3DEYO4QB6/ - (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BMVQRPDVSVZNGGX57CFKCYT3DEYO4QB6/ - Mailing List, Third Party Advisory

15 Feb 2022, 04:15

Type Values Removed Values Added
References
  • (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MCLETLGVM5DBX6QNHQFW6TWGO5T3DENY/ -
  • (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BMVQRPDVSVZNGGX57CFKCYT3DEYO4QB6/ -

02 Dec 2021, 20:59

Type Values Removed Values Added
References (CONFIRM) https://security.netapp.com/advisory/ntap-20211008-0001/ - (CONFIRM) https://security.netapp.com/advisory/ntap-20211008-0001/ - Third Party Advisory

08 Oct 2021, 15:15

Type Values Removed Values Added
References
  • (CONFIRM) https://security.netapp.com/advisory/ntap-20211008-0001/ -

23 Sep 2021, 15:35

Type Values Removed Values Added
CWE CWE-835
CVSS v2 : unknown
v3 : unknown 		v2 : 5.0
v3 : 7.5
CPE cpe:2.3:a:rencode_project:rencode:*:*:*:*:*:python:*:*
References (MISC) https://github.com/aresch/rencode/pull/29 - (MISC) https://github.com/aresch/rencode/pull/29 - Patch, Third Party Advisory
References (MISC) https://seclists.org/fulldisclosure/2021/Sep/16 - (MISC) https://seclists.org/fulldisclosure/2021/Sep/16 - Mailing List, Third Party Advisory
References (MISC) https://pypi.org/project/rencode/#history - (MISC) https://pypi.org/project/rencode/#history - Third Party Advisory
References (MISC) https://github.com/aresch/rencode/commit/572ff74586d9b1daab904c6f7f7009ce0143bb75 - (MISC) https://github.com/aresch/rencode/commit/572ff74586d9b1daab904c6f7f7009ce0143bb75 - Patch, Third Party Advisory

10 Sep 2021, 02:15

Type Values Removed Values Added
New CVE
Information

Published : 2021-09-10 02:15

Updated : 2024-11-21 06:24

NVD link : CVE-2021-40839

Mitre link : CVE-2021-40839

CVE.ORG link : CVE-2021-40839

JSON object : View

Products Affected

rencode_project

  • rencode

fedoraproject

  • fedora
CWE
CWE-835

Loop with Unreachable Exit Condition ('Infinite Loop')