Ubuntu 16.04 LTS / 18.04 LTS : PySAML2 vulnerability (USN-4245-1)

high Nessus Plugin ID 133179

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Synopsis

The remote Ubuntu host is missing a security update.

Description

The remote Ubuntu 16.04 LTS / 18.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-4245-1 advisory.

It was discovered that PySAML2 incorrectly handled certain SAML files. An attacker could possibly use this issue to bypass signature verification with arbitrary data.

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected python-pysaml2 and / or python3-pysaml2 packages.

Plugin Details

Severity: High

ID: 133179

File Name: ubuntu_USN-4245-1.nasl

Version: 1.9

Type: local

Agent: unix

Family: Ubuntu Local Security Checks

Published: 1/22/2020

Updated: 8/29/2024

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N

CVSS Score Source: CVE-2020-5390

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:python-pysaml2, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:python3-pysaml2, cpe:/o:canonical:ubuntu_linux:16.04:-:lts

Required KB Items: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 1/21/2020

Vulnerability Publication Date: 1/13/2020

Reference Information

CVE: CVE-2020-5390

USN: 4245-1

Detections

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