The multiauth module in SimpleSAMLphp 1.14.13 and earlier 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.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - The multiauth module in SimpleSAMLphp 1.14.13 and earlier 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-2017-12869)

Note that Nessus relies on the presence of the package as reported by the vendor.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - The multiauth module in SimpleSAMLphp 1.14.13 and earlier 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-2017-12869)

Several vulnerabilities have been discovered in SimpleSAMLphp, a framework for authentication, primarily via the SAML protocol.

  - CVE-2017-12867     Attackers with access to a secret token could extend its     validity period by manipulating the prepended time     offset.

  - CVE-2017-12869     When using the multiauth module, attackers can bypass     authentication context restrictions and use any     authentication source defined in the config.

  - CVE-2017-12873     Defensive measures have been taken to prevent the     administrator from misconfiguring persistent NameIDs to     avoid identifier clash. (Affects Debian 8 Jessie only.)

  - CVE-2017-12874     The InfoCard module could accept incorrectly signed XML     messages in rare occasions.

  - CVE-2017-18121     The consentAdmin module was vulnerable to a Cross-Site     Scripting attack, allowing an attacker to craft links     that could execute arbitrary JavaScript code in the     victim's browser.

  - CVE-2017-18122     The (deprecated) SAML 1.1 implementation would regard as     valid any unsigned SAML response containing more than     one signed assertion, provided that the signature of at     least one of the assertions was valid, allowing an     attacker that could obtain a valid signed assertion from     an IdP to impersonate users from that IdP.

  - CVE-2018-6519     Regular expression denial of service when parsing     extraordinarily long timestamps.

  - CVE-2018-6521     Change sqlauth module MySQL charset from utf8 to utf8mb     to prevent theoretical query truncation that could allow     remote attackers to bypass intended access restrictions

  - CVE-2018-7644     Critical signature validation vulnerability.

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.

ID	Name	Product	Family	Type	Severity
258296	Linux Distros Unpatched Vulnerability : CVE-2017-12869	Nessus	Misc.	Local	high
431781	SCA: security update for simplesamlphp/simplesamlphp (GHSA-qc43-78vj-vg7p)	Tenable Cloud Security	SCA Checks	Local	high
431781	SCA: security update for simplesamlphp/simplesamlphp (GHSA-qc43-78vj-vg7p)	Tenable Self-Hosted Container Security	SCA Checks	Local	high
107119	Debian DSA-4127-1 : simplesamlphp - security update	Nessus	Debian Local Security Checks	Local	critical
105193	Debian DLA-1205-1 : simplesamlphp security update	Nessus	Debian Local Security Checks	Local	critical

Detections

Analytics

CVE-2017-12869

high

Tenable Plugins

high

high

high

critical

critical