CVE-2020-5390

Publication date 13 January 2020

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.5 · High

Score breakdown

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.

Status

Package Ubuntu Release Status
python-pysaml2 19.10 eoan
Fixed 4.5.0+dfsg1-0ubuntu2.19.10.1
19.04 disco
Fixed 4.5.0+dfsg1-0ubuntu2.19.04.1
18.04 LTS bionic
Fixed 4.0.2-0ubuntu3.1
16.04 LTS xenial
Fixed 3.0.0-3ubuntu1.16.04.4
14.04 LTS trusty Not in release

Severity score breakdown

Parameter Value
Base score 7.5 · High
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact High
Availability impact None
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N