Detections
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Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / Pro Realtime 24.04 LTS : SimpleSAMLphp vulnerabilities (USN-8770-1)

high Nessus Plugin ID 346237

Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / Pro Realtime 24.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-8770-1 advisory.

 It was discovered that SimpleSAMLphp incorrectly validated cryptographic signatures in XML messages. An authenticated attacker could possibly use this issue to impersonate users or gain elevated privileges.
 This issue only affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. (CVE-2019-3465)

 It was discovered that SimpleSAMLphp incorrectly handled external entities when parsing untrusted XML documents. A remote attacker could possibly use this issue to obtain sensitive information. This issue did not affect Ubuntu 24.04 LTS. (CVE-2024-52596)

 It was discovered that SimpleSAMLphp incorrectly verified signatures in SAML messages using the HTTP- Redirect binding. A remote attacker could possibly use this issue to bypass authentication and impersonate users. (CVE-2025-27773)

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

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

Solution

Update the affected simplesamlphp package.

See Also

https://ubuntu.com/security/notices/USN-8770-1

Plugin Details

Severity: High

ID: 346237

File Name: ubuntu_USN-8770-1.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 9/16/2026

Updated: 9/16/2026

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.22

CVSS v2

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 4.8

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

CVSS Score Source: CVE-2019-3465

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

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

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

CVSS v4

Risk Factor: High

Base Score: 8.8

Threat Score: 6.8

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:H/SC:L/SI:L/SA:N

CVSS Score Source: CVE-2024-52596

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, cpe:/o:canonical:ubuntu_linux:24.04:-:lts, cpe:/o:canonical:ubuntu_linux:pro:-:lts, p-cpe:/a:canonical:ubuntu_linux:simplesamlphp

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

Exploit Ease: No known exploits are available

Patch Publication Date: 9/15/2026

Vulnerability Publication Date: 11/6/2019

Reference Information

CVE: CVE-2019-3465, CVE-2024-52596, CVE-2025-27773

USN: 8770-1