Debian DLA-1205-1 : simplesamlphp security update

critical Nessus Plugin ID 105193

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Synopsis

The remote Debian host is missing a security update.

Description

The simplesamlphp package in wheezy is vulnerable to multiple attacks on authentication-related code, leading to unauthorized access and information disclosure.

CVE-2017-12867

The SimpleSAML_Auth_TimeLimitedToken class allows attackers with access to a secret token to extend its validity period by manipulating the prepended time offset.

CVE-2017-12869

The multiauth module allows remote attackers to bypass authentication context restrictions and use an authentication source defined in config/authsources.php via vectors related to improper validation of user input.

CVE-2017-12872 / CVE-2017-12868

The (1) Htpasswd authentication source in the authcrypt module and (2) SimpleSAML_Session class in SimpleSAMLphp 1.14.11 and earlier allow remote iattackers to conduct timing side-channel attacks by leveraging use of the standard comparison operator to compare secret material against user input.

CVE-2017-12868 was a about an improper fix of CVE-2017-12872 in the initial patch released by upstream. We have used the correct patch.

CVE-2017-12873

SimpleSAMLphp might allow attackers to obtain sensitive information, gain unauthorized access, or have unspecified other impacts by leveraging incorrect persistent NameID generation when an Identity Provider (IdP) is misconfigured.

CVE-2017-12874

The InfoCard module for SimpleSAMLphp allows attackers to spoof XML messages by leveraging an incorrect check of return values in signature validation utilities.

For Debian 7 'Wheezy', these problems have been fixed in version 1.9.2-1+deb7u1.

We recommend that you upgrade your simplesamlphp packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Upgrade the affected simplesamlphp package.

Plugin Details

Severity: Critical

ID: 105193

File Name: debian_DLA-1205.nasl

Version: 3.5

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 12/13/2017

Updated: 1/11/2021

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:simplesamlphp, cpe:/o:debian:debian_linux:7.0

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

Exploit Ease: No known exploits are available

Patch Publication Date: 12/12/2017

Reference Information

CVE: CVE-2017-12867, CVE-2017-12868, CVE-2017-12869, CVE-2017-12872, CVE-2017-12873, CVE-2017-12874

Detections

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