CVE-2019-3877 Open redirect in mod auth mellon
An open redirect in mod_auth_mellon allows attackers to bypass URL validation via backslash manipulation, potentially leading to phishing or credential theft.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2019-3877?
CVE-2019-3877 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 27 Mar 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-601
Which versions are affected by CVE-2019-3877?
It affects 4 products.
Linux distribution packages (5)
mod_auth_mellon Red Hat:enterprise_linux:8::appstream | All versions | 0:0.14.0-9.el8 |
mod_auth_mellon-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:0.14.0-9.el8 |
mod_auth_mellon-debugsource Red Hat:enterprise_linux:8::appstream | All versions | 0:0.14.0-9.el8 |
mod_auth_mellon-diagnostics Red Hat:enterprise_linux:8::appstream | All versions | 0:0.14.0-9.el8 |
mod_auth_mellon-diagnostics-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:0.14.0-9.el8 |
Products include Canonical Ubuntu Linux, Fedoraproject Fedora, Mod Auth Mellon Project Mod Auth Mellon, Redhat Enterprise Linux.
How do I fix CVE-2019-3877?
Upgrade to a fixed version.
Is CVE-2019-3877 being exploited?
There is no known exploitation of CVE-2019-3877 in the wild and no public exploit code.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as DEBIAN-CVE-2019-3877, GHSA-qr9h-f4fq-2h85, RHSA-2019:3421, UBUNTU-CVE-2019-3877.