GHSA-6748-36qp-fx6r

Suggest an improvement
Source
https://github.com/advisories/GHSA-6748-36qp-fx6r
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/05/GHSA-6748-36qp-fx6r/GHSA-6748-36qp-fx6r.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-6748-36qp-fx6r
Aliases
Published
2022-05-17T04:56:46Z
Modified
2024-10-24T22:06:51.043867Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
  • 8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N CVSS Calculator
Summary
PyOpenSSL Mishandles NUL Byte In Certificate Subject Alternative Name
Details

The X509Extension in pyOpenSSL before 0.13.1 does not properly handle a \0 character in a domain name in the Subject Alternative Name field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority.

References

Affected packages

PyPI / pyopenssl

Package

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.13.1

Affected versions

0.*

0.6
0.7
0.8
0.9
0.10
0.11
0.12
0.13