Vulnerability Details 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.138
EPSS Ranking 94.1%
CVSS Severity
CVSS v3 Score 7.5
CVSS v2 Score 5.0
References
- https://github.com/aresch/rencode/commit/572ff74586d9b1daab904c6f7f7009ce0143bb75
- https://github.com/aresch/rencode/pull/29
- 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
- https://seclists.org/fulldisclosure/2021/Sep/16
- https://security.netapp.com/advisory/ntap-20211008-0001/
- https://github.com/aresch/rencode/commit/572ff74586d9b1daab904c6f7f7009ce0143bb75
- https://github.com/aresch/rencode/pull/29
- 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
- https://seclists.org/fulldisclosure/2021/Sep/16
- https://security.netapp.com/advisory/ntap-20211008-0001/
Products affected by CVE-2021-40839
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cpe:2.3:a:rencode_project:rencode:1.0
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cpe:2.3:a:rencode_project:rencode:1.0.3
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cpe:2.3:a:rencode_project:rencode:1.0.4
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cpe:2.3:a:rencode_project:rencode:1.0.5
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cpe:2.3:a:rencode_project:rencode:1.0.6
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cpe:2.3:o:fedoraproject:fedora:34
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cpe:2.3:o:fedoraproject:fedora:35