CVE-2021-40839

Advisory

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.
https://seclists.org/fulldisclosure/2021/Sep/16

Affected package

Affected versions

Fixed versions

Vulnerability changelog

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. See CVE-2021-40839.


MISC:https://github.com/aresch/rencode/commit/572ff74586d9b1daab904c6f7f7009ce0143bb75: https://github.com/aresch/rencode/commit/572ff74586d9b1daab904c6f7f7009ce0143bb75
MISC:https://github.com/aresch/rencode/pull/29: https://github.com/aresch/rencode/pull/29
MISC:https://pypi.org/project/rencode/#history: https://pypi.org/project/rencode/#history
MISC:https://seclists.org/fulldisclosure/2021/Sep/16: https://seclists.org/fulldisclosure/2021/Sep/16

Resources

• https://github.com/aresch/rencode/commit/572ff74586d9b1daab904c6f7f7009ce0143bb75
• https://github.com/aresch/rencode/pull/29
• https://pypi.org/project/rencode/#history
• https://seclists.org/fulldisclosure/2021/Sep/16
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-40839
• https://security.netapp.com/advisory/ntap-20211008-0001/
• https://lists.fedoraproject.org/archives/list/[email protected]/message/BMVQRPDVSVZNGGX57CFKCYT3DEYO4QB6/
• https://lists.fedoraproject.org/archives/list/[email protected]/message/MCLETLGVM5DBX6QNHQFW6TWGO5T3DENY/