HTTPRedirect.php in the saml2 library in SimpleSAMLphp before 1.15.4 has an incorrect check of return values in the signature validation utilities, allowing an attacker to get invalid signatures accepted as valid by forcing an error during validation. This occurs because of a dependency on PHP functionality that interprets a -1 error code as a true boolean value.

- [SSPSA 201803-01 /     CVE-2018-7711](https://simplesamlphp.org/security/201803
    -01)

  - [SSPSA 201802-01 /     CVE-2018-7644](https://simplesamlphp.org/security/201802
    -01)

  - [SSPSA 201801-01 /     CVE-2018-6519](https://simplesamlphp.org/security/201801
    -01)

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Cure53 discovered that in SimpleSAMLphp, in rare circumstances an invalid signature on the SAML 2.0 HTTP Redirect binding could be considered valid.

Additionally this update fixes a regression introduced in DLA-1298 by the backported patch for SSA-201802-01/CVE-2018-7644.

For Debian 7 'Wheezy', these problems have been fixed in version 1.9.2-1+deb7u4.

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
120598	Fedora 28 : php-simplesamlphp-saml2_3 (2018-8cda2309d6)	Nessus	Fedora Local Security Checks	high
120582	Fedora 28 : php-simplesamlphp-saml2 (2018-85cb15befd)	Nessus	Fedora Local Security Checks	high
120236	Fedora 28 : php-simplesamlphp-saml2_1 (2018-0ee228da17)	Nessus	Fedora Local Security Checks	high
108622	Fedora 26 : php-simplesamlphp-saml2 (2018-f4ab4d96f9)	Nessus	Fedora Local Security Checks	high
108621	Fedora 26 : php-simplesamlphp-saml2_3 (2018-f2097d8937)	Nessus	Fedora Local Security Checks	high
108620	Fedora 26 : php-simplesamlphp-saml2_1 (2018-d809bd2fd6)	Nessus	Fedora Local Security Checks	high
108619	Fedora 27 : php-simplesamlphp-saml2_1 (2018-96601292a2)	Nessus	Fedora Local Security Checks	high
108618	Fedora 27 : php-simplesamlphp-saml2 (2018-6db40b0c37)	Nessus	Fedora Local Security Checks	high
108615	Fedora 27 : php-simplesamlphp-saml2_3 (2018-37e28670f2)	Nessus	Fedora Local Security Checks	high
108604	Debian DLA-1314-1 : simplesamlphp security update	Nessus	Debian Local Security Checks	high

Detections

Analytics

CVE-2018-7711

high

Tenable Plugins

high

high

high

high

high

high

high

high

high

high