Open Redirect Affecting mod24_auth_mellon-debuginfo package, versions <0:0.14.0-2.8.amzn1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-AMZN201803-MOD24AUTHMELLONDEBUGINFO-1717646
- published27 Sept 2021
- disclosed27 Mar 2019
Introduced: 27 Mar 2019
CVE-2019-3877 (opens in a new tab)How to fix?
Upgrade Amazon-Linux:2018.03 mod24_auth_mellon-debuginfo to version 0:0.14.0-2.8.amzn1 or higher.
This issue was patched in ALAS-2019-1200.
NVD Description
Note: Versions mentioned in the description apply only to the upstream mod24_auth_mellon-debuginfo package and not the mod24_auth_mellon-debuginfo package as distributed by Amazon-Linux.
See How to fix? for Amazon-Linux:2018.03 relevant fixed versions and status.
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.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3877
- https://github.com/Uninett/mod_auth_mellon/commit/62041428a32de402e0be6ba45fe12df6a83bedb8
- https://github.com/Uninett/mod_auth_mellon/issues/35
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3877
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CNW5YMC5TLWVWNJEY6AIWNSNPRAMWPQJ/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/X7NLAU7KROWNTHAYSA2S67X347F42L2I/
- https://access.redhat.com/errata/RHSA-2019:0766
- https://access.redhat.com/errata/RHSA-2019:3421
- https://usn.ubuntu.com/3924-1/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CNW5YMC5TLWVWNJEY6AIWNSNPRAMWPQJ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X7NLAU7KROWNTHAYSA2S67X347F42L2I/