DEBIAN-CVE-2018-10903
- Source
- https://security-tracker.debian.org/tracker/CVE-2018-10903
- Import Source
- https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2018-10903.json
- JSON Data
- https://api.osv.dev/v1/vulns/DEBIAN-CVE-2018-10903
- Upstream
- Published
- 2018-07-30T16:29:00Z
- Modified
- 2025-09-30T03:54:36Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
- Summary
- [none]
- Details
-
A flaw was found in python-cryptography versions between >=1.9.0 and <2.3. The finalizewithtag API did not enforce a minimum tag length. If a user did not validate the input length prior to passing it to finalizewithtag 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.
- References
Affected packages
Debian:11 / python-cryptography
Package
- Name
- python-cryptography
- Purl
- pkg:deb/debian/python-cryptography?arch=source
Debian:12 / python-cryptography
Package
- Name
- python-cryptography
- Purl
- pkg:deb/debian/python-cryptography?arch=source
Debian:13 / python-cryptography
Package
- Name
- python-cryptography
- Purl
- pkg:deb/debian/python-cryptography?arch=source
Debian:14 / python-cryptography
Package
- Name
- python-cryptography
- Purl
- pkg:deb/debian/python-cryptography?arch=source