The secureCompare method in lib/SimpleSAML/Utils/Crypto.php in SimpleSAMLphp 1.14.13 and earlier, when used with PHP before 5.6, allows attackers to conduct session fixation attacks or possibly bypass authentication by leveraging missing character conversions before an XOR operation.

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

  - The secureCompare method in lib/SimpleSAML/Utils/Crypto.php in SimpleSAMLphp 1.14.13 and earlier, when     used with PHP before 5.6, allows attackers to conduct session fixation attacks or possibly bypass     authentication by leveraging missing character conversions before an XOR operation. (CVE-2017-12868)

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

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 attackers 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.

For Debian 8 'Jessie', these problems have been fixed in version 1.13.1-2+deb8u2.

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.

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	Severity
254696	Linux Distros Unpatched Vulnerability : CVE-2017-12868	Nessus	Misc.	critical
110817	Debian DLA-1408-1 : simplesamlphp security update	Nessus	Debian Local Security Checks	critical
105193	Debian DLA-1205-1 : simplesamlphp security update	Nessus	Debian Local Security Checks	critical

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CVE-2017-12868

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