RedHat: RHSA-2019-0766:01 Important: mod_auth_mellon security and bug fix
Summary
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.
Security Fix(es):
* mod_auth_mellon: authentication bypass in ECP flow (CVE-2019-3878)
* mod_auth_mellon: open redirect in logout url when using URLs with
backslashes (CVE-2019-3877)
For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE
page(s) listed in the References section.
Bug Fix(es):
* mod_auth_mellon Cert files name wrong when hostname contains a number
(fixed in upstream package) (BZ#1697487)
Summary
Solution
For details on how to apply this update, which includes the changes
described in this advisory, refer to:
https://access.redhat.com/articles/11258
References
https://access.redhat.com/security/cve/CVE-2019-3877 https://access.redhat.com/security/cve/CVE-2019-3878 https://access.redhat.com/security/updates/classification/#important
Package List
Red Hat Enterprise Linux Server (v. 7):
Source:
mod_auth_mellon-0.14.0-2.el7_6.4.src.rpm
ppc64:
mod_auth_mellon-0.14.0-2.el7_6.4.ppc64.rpm
mod_auth_mellon-debuginfo-0.14.0-2.el7_6.4.ppc64.rpm
ppc64le:
mod_auth_mellon-0.14.0-2.el7_6.4.ppc64le.rpm
mod_auth_mellon-debuginfo-0.14.0-2.el7_6.4.ppc64le.rpm
s390x:
mod_auth_mellon-0.14.0-2.el7_6.4.s390x.rpm
mod_auth_mellon-debuginfo-0.14.0-2.el7_6.4.s390x.rpm
x86_64:
mod_auth_mellon-0.14.0-2.el7_6.4.x86_64.rpm
mod_auth_mellon-debuginfo-0.14.0-2.el7_6.4.x86_64.rpm
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7):
Source:
mod_auth_mellon-0.14.0-2.el7_6.4.src.rpm
aarch64:
mod_auth_mellon-0.14.0-2.el7_6.4.aarch64.rpm
mod_auth_mellon-debuginfo-0.14.0-2.el7_6.4.aarch64.rpm
ppc64le:
mod_auth_mellon-0.14.0-2.el7_6.4.ppc64le.rpm
mod_auth_mellon-debuginfo-0.14.0-2.el7_6.4.ppc64le.rpm
s390x:
mod_auth_mellon-0.14.0-2.el7_6.4.s390x.rpm
mod_auth_mellon-debuginfo-0.14.0-2.el7_6.4.s390x.rpm
Red Hat Enterprise Linux Server Optional (v. 7):
ppc64:
mod_auth_mellon-debuginfo-0.14.0-2.el7_6.4.ppc64.rpm
mod_auth_mellon-diagnostics-0.14.0-2.el7_6.4.ppc64.rpm
ppc64le:
mod_auth_mellon-debuginfo-0.14.0-2.el7_6.4.ppc64le.rpm
mod_auth_mellon-diagnostics-0.14.0-2.el7_6.4.ppc64le.rpm
s390x:
mod_auth_mellon-debuginfo-0.14.0-2.el7_6.4.s390x.rpm
mod_auth_mellon-diagnostics-0.14.0-2.el7_6.4.s390x.rpm
x86_64:
mod_auth_mellon-debuginfo-0.14.0-2.el7_6.4.x86_64.rpm
mod_auth_mellon-diagnostics-0.14.0-2.el7_6.4.x86_64.rpm
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7):
aarch64:
mod_auth_mellon-debuginfo-0.14.0-2.el7_6.4.aarch64.rpm
mod_auth_mellon-diagnostics-0.14.0-2.el7_6.4.aarch64.rpm
ppc64le:
mod_auth_mellon-debuginfo-0.14.0-2.el7_6.4.ppc64le.rpm
mod_auth_mellon-diagnostics-0.14.0-2.el7_6.4.ppc64le.rpm
s390x:
mod_auth_mellon-debuginfo-0.14.0-2.el7_6.4.s390x.rpm
mod_auth_mellon-diagnostics-0.14.0-2.el7_6.4.s390x.rpm
Red Hat Enterprise Linux Workstation (v. 7):
Source:
mod_auth_mellon-0.14.0-2.el7_6.4.src.rpm
x86_64:
mod_auth_mellon-0.14.0-2.el7_6.4.x86_64.rpm
mod_auth_mellon-debuginfo-0.14.0-2.el7_6.4.x86_64.rpm
Red Hat Enterprise Linux Workstation Optional (v. 7):
x86_64:
mod_auth_mellon-debuginfo-0.14.0-2.el7_6.4.x86_64.rpm
mod_auth_mellon-diagnostics-0.14.0-2.el7_6.4.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/
Topic
An update for mod_auth_mellon is now available for Red Hat Enterprise Linux7.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.
Topic
Relevant Releases Architectures
Red Hat Enterprise Linux Server (v. 7) - ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 7) - x86_64
Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) - aarch64, ppc64le, s390x
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) - aarch64, ppc64le, s390x
Bugs Fixed
1691125 - CVE-2019-3877 mod_auth_mellon: open redirect in logout url when using URLs with backslashes
1691126 - CVE-2019-3878 mod_auth_mellon: authentication bypass in ECP flow
1697487 - mod_auth_mellon Cert files name wrong when hostname contains a number (fixed in upstream package) [rhel-7.6.z]