CVE-2018-10903 – cryptography

Package

Manager: pip
Name: cryptography
Vulnerable Version: >=1.9.0 <2.3

Severity

Level: High

CVSS v3.1: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

EPSS: 0.00403 pctl0.60051

Details

PyCA Cryptography vulnerable to GCM tag forgery A flaw was found in python-cryptography versions between >=1.9.0 and <2.3. The finalize_with_tag API did not enforce a minimum tag length. If a user did not validate the input length prior to passing it to finalize_with_tag an attacker could craft an invalid payload with a shortened tag (e.g. 1 byte) such that they would have a 1 in 256 chance of passing the MAC check. GCM tag forgeries can cause key leakage.

Metadata

Created: 2018-07-31T18:28:09Z
Modified: 2024-09-13T18:13:03Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2018/07/GHSA-fcf9-3qw3-gxmj/GHSA-fcf9-3qw3-gxmj.json
CWE IDs: ["CWE-20"]
Alternative ID: GHSA-fcf9-3qw3-gxmj
Finding: F184
Auto approve: 1