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CVE-2019-3877

Status Candidate

Overview

A vulnerability was found in mod_auth_mellon before v0.14.2. An open redirect in the logout URL allows requests with backslashes to pass through by assuming that it is a relative URL, while the browsers silently convert backslash characters into forward slashes treating them as an absolute URL. This mismatch allows an attacker to bypass the redirect URL validation logic in apr_uri_parse function.

Related Files

Ubuntu Security Notice USN-4597-1
Posted Oct 22, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4597-1 - Fran

tags | advisory
systems | linux, ubuntu
advisories | CVE-2017-6807, CVE-2019-3877, CVE-2019-3878
MD5 | 786c207490434b860d22d94341723548
Red Hat Security Advisory 2019-3421-01
Posted Nov 6, 2019
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2019-3421-01 - The mod_auth_mellon module for the Apache HTTP Server is an authentication service that implements the SAML 2.0 federation protocol. The module grants access based on the attributes received in assertions generated by an IdP server. An open redirect was addressed.

tags | advisory, web, protocol
systems | linux, redhat
advisories | CVE-2019-3877
MD5 | 7fdef1d4333eb8d1560c4badbecb42ea
Red Hat Security Advisory 2019-0766-01
Posted Apr 16, 2019
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2019-0766-01 - The mod_auth_mellon module for the Apache HTTP Server is an authentication service that implements the SAML 2.0 federation protocol. The module grants access based on the attributes received in assertions generated by an IdP server. Issues addressed include a bypass vulnerability.

tags | advisory, web, protocol, bypass
systems | linux, redhat
advisories | CVE-2019-3877, CVE-2019-3878
MD5 | d6979d608903f62f31aa42621e0f5b8e
Ubuntu Security Notice USN-3924-1
Posted Mar 28, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3924-1 - It was discovered that mod_auth_mellon incorrectly handled certain requests. An attacker could possibly use this issue to redirect a user to a malicious URL. It was discovered that mod_auth_mellon incorrectly handled certain requests. An attacker could possibly use this issue to access sensitive information.

tags | advisory
systems | linux, ubuntu
advisories | CVE-2019-3877, CVE-2019-3878
MD5 | d398943a9939c7638ab540f4147bab7c
Debian Security Advisory 4414-1
Posted Mar 25, 2019
Authored by Debian | Site debian.org

Debian Linux Security Advisory 4414-1 - Several issues have been discovered in Apache module auth_mellon, which provides SAML 2.0 authentication.

tags | advisory
systems | linux, debian
advisories | CVE-2019-3877, CVE-2019-3878
MD5 | c9b15b30966a09c6fb00b5a662f07e38
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