What’s Vulnerable › Vulnerabilities

CVE-2015-20107

• Severity: high (CVSS 7.6 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-04-13 · updated 2026-10-14
• Weakness: CWE-77

Description

In Python (aka CPython) up to 3.10.8, the mailcap module does not add escape characters into commands discovered in the system mailcap file. This may allow attackers to inject shell commands into applications that call mailcap.findmatch with untrusted input (if they lack validation of user-provided filenames or arguments). The fix is also back-ported to 3.7, 3.8, 3.9

Affected products

• Fedoraproject Fedora: 35, 36, 37
• Active IQ Unified Manager for VMware vSphere, Linux, and Microsoft Windows: all versions
• NetApp ONTAP Select Deploy administration utility: all versions
• NetApp SnapCenter: all versions
• Python: from 3.7.0 through 3.7.15; from 3.8.0 through 3.8.15; from 3.9.0 through 3.9.15; from 3.10.0 before 3.10.8 — fixed in 3.10.8

How to fix

Upgrade to a fixed version: Python 3.10.8. Check the vendor advisory for mitigations.

References

• https://bugs.python.org/issue24778
• https://github.com/python/cpython/issues/68966
• https://lists.debian.org/debian-lts-announce/2023/05/msg00024.html
• https://lists.debian.org/debian-lts-announce/2023/06/msg00039.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/46KWPTI72SSEOF53DOYQBQOCN4QQB2GE/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/53TQZFLS6O3FLIMVSXFEEPZSWLDZLBOX/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/57NECACX333A3BBZM2TR2VZ4ZE3UG3SN/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5DBVY4YC2P6EPZZ2DROOXHDOWZ4BJFLW/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6QIKVSW3H6W2GQGDE5DTIWLGFNH6KKEW/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AKGMYDVKI3XNM27B6I6RQ6QV3TVJAUCG/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ERYMM2QVDPOJLX4LYXWYIQN5FOIJLDRY/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F3LNY2NHM6J22O6Q5ANOE3SZRK3OACKR/

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