mod_auth_mellon before 0.13.1 is vulnerable to a Cross-Site Session Transfer attack, where a user with access to one web site running on a server can copy their session cookie to a different web site on the same server to get access to that site.

vendor_unpatched cve-2017-6807: Unpatched CVEs for Red Hat Enterprise Linux (cve-2017-6807)

The remote Ubuntu 16.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-4597-1 advisory.

    Franois Kooman discovered that mod_auth_mellon incorrectly handled cookies. An attacker could possibly     use this issue to cause a Cross-Site Session Transfer attack. (CVE-2017-6807)

    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. (CVE-2019-3877)

    It was discovered that mod_auth_mellon incorrectly handled certain requests. An attacker could possibly     use this issue to access sensitive information. (CVE-2019-3878)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

According to the version of the mod_auth_mellon package installed, the EulerOS installation on the remote host is affected by the following vulnerability :

  - mod_auth_mellon before 0.13.1 is vulnerable to a     Cross-Site Session Transfer attack, where a user with     access to one web site running on a server can copy     their session cookie to a different web site on the     same server to get access to that site.(CVE-2017-6807)

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

According to the versions of the mod_auth_mellon package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - mod_auth_mellon before 0.13.1 is vulnerable to a     Cross-Site Session Transfer attack, where a user with     access to one web site running on a server can copy     their session cookie to a different web site on the     same server to get access to that site.(CVE-2017-6807)

  - The am_read_post_data function in mod_auth_mellon     before 0.11.1 does not check if the ap_get_client_block     function returns an error, which allows remote     attackers to cause a denial of service (segmentation     fault and process crash) via a crafted POST     data.(CVE-2016-2145)

  - The am_read_post_data function in mod_auth_mellon     before 0.11.1 does not limit the amount of data read,     which allows remote attackers to cause a denial of     service (worker process crash, web server deadlock, or     memory consumption) via a large amount of POST     data.(CVE-2016-2146)

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

Cross-site session transfer vulnerability :

It was found that mod_auth_mellon was vulnerable to a cross-site session transfer attack. An attacker with access to one website on a server could use the same session to get access to a different site running on the same server. (CVE-2017-6807)

ID	Name	Product	Family	Severity
141824	Ubuntu 16.04 LTS : mod_auth_mellon vulnerabilities (USN-4597-1)	Nessus	Ubuntu Local Security Checks	high
132167	EulerOS 2.0 SP3 : mod_auth_mellon (EulerOS-SA-2019-2632)	Nessus	Huawei Local Security Checks	medium
131880	EulerOS 2.0 SP2 : mod_auth_mellon (EulerOS-SA-2019-2388)	Nessus	Huawei Local Security Checks	medium
107239	Amazon Linux AMI : mod_auth_mellon / mod24_auth_mellon (ALAS-2018-968)	Nessus	Amazon Linux Local Security Checks	medium

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CVE-2017-6807

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