CVE-2020-5390
PySAML2 XML Signature Wrapping (XSW) Vulnerability
Description
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.
INFO
Published Date :
Jan. 13, 2020, 7:15 p.m.
Last Modified :
Feb. 1, 2023, 5:08 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
Affected Products
The following products are affected by CVE-2020-5390
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2020-5390.
| URL | Resource |
|---|---|
| https://github.com/IdentityPython/pysaml2/commit/5e9d5acbcd8ae45c4e736ac521fd2df5b1c62e25 | Patch Third Party Advisory |
| https://github.com/IdentityPython/pysaml2/commit/f27c7e7a7010f83380566a219fd6a290a00f2b6e | Patch Third Party Advisory |
| https://github.com/IdentityPython/pysaml2/releases | Release Notes Third Party Advisory |
| https://github.com/IdentityPython/pysaml2/releases/tag/v5.0.0 | Release Notes Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2020/02/msg00025.html | Mailing List Third Party Advisory |
| https://pypi.org/project/pysaml2/5.0.0/ | Product Third Party Advisory |
| https://usn.ubuntu.com/4245-1/ | Third Party Advisory |
| https://www.debian.org/security/2020/dsa-4630 | Third Party Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2020-5390 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-5390 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Modified Analysis by [email protected]
Feb. 01, 2023
Action Type Old Value New Value Changed Reference Type https://lists.debian.org/debian-lts-announce/2020/02/msg00025.html No Types Assigned https://lists.debian.org/debian-lts-announce/2020/02/msg00025.html Mailing List, Third Party Advisory Changed Reference Type https://usn.ubuntu.com/4245-1/ No Types Assigned https://usn.ubuntu.com/4245-1/ Third Party Advisory Changed Reference Type https://www.debian.org/security/2020/dsa-4630 No Types Assigned https://www.debian.org/security/2020/dsa-4630 Third Party Advisory Added CPE Configuration OR *cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Feb. 26, 2020
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2020/02/msg00025.html [No Types Assigned] -
CVE Modified by [email protected]
Feb. 22, 2020
Action Type Old Value New Value Added Reference https://www.debian.org/security/2020/dsa-4630 [No Types Assigned] -
CVE Modified by [email protected]
Jan. 27, 2020
Action Type Old Value New Value Added Reference https://usn.ubuntu.com/4245-1/ [No Types Assigned] -
Initial Analysis by [email protected]
Jan. 24, 2020
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:P/A:N) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Changed Reference Type https://github.com/IdentityPython/pysaml2/commit/5e9d5acbcd8ae45c4e736ac521fd2df5b1c62e25 No Types Assigned https://github.com/IdentityPython/pysaml2/commit/5e9d5acbcd8ae45c4e736ac521fd2df5b1c62e25 Patch, Third Party Advisory Changed Reference Type https://github.com/IdentityPython/pysaml2/commit/f27c7e7a7010f83380566a219fd6a290a00f2b6e No Types Assigned https://github.com/IdentityPython/pysaml2/commit/f27c7e7a7010f83380566a219fd6a290a00f2b6e Patch, Third Party Advisory Changed Reference Type https://github.com/IdentityPython/pysaml2/releases No Types Assigned https://github.com/IdentityPython/pysaml2/releases Release Notes, Third Party Advisory Changed Reference Type https://github.com/IdentityPython/pysaml2/releases/tag/v5.0.0 No Types Assigned https://github.com/IdentityPython/pysaml2/releases/tag/v5.0.0 Release Notes, Third Party Advisory Changed Reference Type https://pypi.org/project/pysaml2/5.0.0/ No Types Assigned https://pypi.org/project/pysaml2/5.0.0/ Product, Third Party Advisory Added CWE NIST CWE-347 Added CPE Configuration OR *cpe:2.3:a:pysaml2_project:pysaml2:*:*:*:*:*:*:*:* versions up to (excluding) 5.0.0
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-5390 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2020-5390
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.30 }} -0.13%
score
0.69130
percentile