DEBIAN-CVE-2020-36242

Advisory lineage Upstream: 1 Downstream: 0
Upstream
CVE-2020-36242
Published: 07 Feb 2021, 20:15
Last modified:28 Apr 2026, 20:18

Vulnerability Summary

Overall Risk (default)
high
70/100
CVSS Score
9.1 CRITICAL
3.1 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

07 Feb 2021, 20:15
Published
Vulnerability first disclosed
28 Apr 2026, 20:18
Last Modified
Vulnerability information updated

Description

In the cryptography package before 3.3.2 for Python, certain sequences of update calls to symmetrically encrypt multi-GB values could result in an integer overflow and buffer overflow, as demonstrated by the Fernet class.

CVSS Metrics

  • v3.1•CRITICAL•Score: 9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Affected Systems

  • debian•python-cryptography

    < 3.3.2-1 | < 3.3.2-1 | < 3.3.2-1 | < 3.3.2-1

References (1)