CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
89.6%
Debian Security Advisory DSA-4414-1 [email protected]
https://www.debian.org/security/ Thijs Kinkhorst
March 23, 2019 https://www.debian.org/security/faq
Package : libapache2-mod-auth-mellon
CVE ID : CVE-2019-3877 CVE-2019-3878
Debian Bug : 925197
Several issues have been discovered in Apache module auth_mellon, which
provides SAML 2.0 authentication.
CVE-2019-3877
It was possible to bypass the redirect URL checking on logout, so
the module could be used as an open redirect facility.
CVE-2019-3878
When mod_auth_mellon is used in an Apache configuration which
serves as a remote proxy with the http_proxy module, it was
possible to bypass authentication by sending SAML ECP headers.
For the stable distribution (stretch), these problems have been fixed in
version 0.12.0-2+deb9u1.
We recommend that you upgrade your libapache2-mod-auth-mellon packages.
For the detailed security status of libapache2-mod-auth-mellon please
refer to its security tracker page at:
https://security-tracker.debian.org/tracker/libapache2-mod-auth-mellon
Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/
Mailing list: [email protected]
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
89.6%