VDB
CVE-2020-5390
CVE-2020-5390
PUBLISHED
CVSS 7.5 HIGH
PySAML2 before 5.0.0 does not check that the signature in a SAML document is enveloped and thus signature wrapping is effective, i.e., it is affected by XML Signature Wrapping (XSW). The signature information and the node/object that is signed can be in different places and thus the signature verification will succeed, but the wrong data will be used. This specifically affects the verification of assertion that have been signed.
EPSS 1.23% · 68.9th percentile
Risk Scores
CVSS 3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
EPSS Score
1.23%
68.9th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:16.04:LTS | python-pysaml2 | 3.0.0-3ubuntu1.16.04.3, 0, 2.4.0-0ubuntu2 |
| Ubuntu:18.04:LTS | python-pysaml2 | 3.0.0-3ubuntu2, 4.0.2-0ubuntu2, 4.0.2-0ubuntu3 |
Timeline
- Jan 13, 2020 CVE Published
- Apr 14, 2021 EPSS Score
- Jun 23, 2021 EPSS Score
- Aug 26, 2021 EPSS Score
- Oct 28, 2021 EPSS Score
- Jan 6, 2022 EPSS Score
- Feb 4, 2022 EPSS Score
- Mar 4, 2022 EPSS Score
- Apr 1, 2022 EPSS Score
- May 6, 2022 EPSS Score
- Jul 8, 2022 EPSS Score
- Sep 11, 2022 EPSS Score
References
- https://github.com/IdentityPython/pysaml2/releases third-party-advisory
- https://pypi.org/project/pysaml2/5.0.0/ third-party-advisory
- https://www.cve.org/CVERecord?id=CVE-2020-5390 third-party-advisory
- https://ubuntu.com/security/CVE-2020-5390 advisory
- https://github.com/IdentityPython/pysaml2/commit/5e9d5acbcd8ae45c4e736ac521fd2df5b1c62e25 fix
- https://github.com/IdentityPython/pysaml2/commit/f27c7e7a7010f83380566a219fd6a290a00f2b6e fix
- https://github.com/IdentityPython/pysaml2/releases/tag/v5.0.0 fix
- https://ubuntu.com/security/notices/USN-4245-1 advisory