RHSA-2019:1436 - Security Advisory

Topic

An update for rh-haproxy18-haproxy is now available for Red Hat Software Collections.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

HAProxy is a TCP/HTTP reverse proxy which is particularly suited for high availability environments.

The following packages have been upgraded to a later upstream version: rh-haproxy18-haproxy (1.8.17). (BZ#1660514)

Security Fix(es):

• haproxy: Infinite recursion via crafted packet allows stack exhaustion and denial of service (CVE-2018-20103)
• haproxy: Information disclosure in check_request_for_cacheability function in proto_http.c (CVE-2018-11469)
• haproxy: Out-of-bounds read in dns.c:dns_validate_dns_response() allows for memory disclosure (CVE-2018-20102)

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):

• ALPN is not enabled due to old OpenSSL dependancy (BZ#1595865)
• HAProxy 1.8: Seamless reload does not work with send-/accept-proxy (BZ#1649041)

Enhancement(s):

• RFE : Haproxy does not resolve ipv6 resolvable hostnames in the backend section. (BZ#1575585)

Additional Changes:

For detailed information on changes in this release, see the Red Hat Software Collections 3.3 Release Notes linked from the References section.

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

Affected Products

• Red Hat Software Collections (for RHEL Server) 1 for RHEL 7.7 x86_64
• Red Hat Software Collections (for RHEL Server) 1 for RHEL 7.6 x86_64
• Red Hat Software Collections (for RHEL Server) 1 for RHEL 7.5 x86_64
• Red Hat Software Collections (for RHEL Server) 1 for RHEL 7.4 x86_64
• Red Hat Software Collections (for RHEL Server) 1 for RHEL 7 x86_64
• Red Hat Software Collections (for RHEL Workstation) 1 for RHEL 7 x86_64

Fixes

• BZ - 1575585 - RFE : Haproxy does not resolve ipv6 resolvable hostnames in the backend section.
• BZ - 1582635 - CVE-2018-11469 haproxy: Information disclosure in check_request_for_cacheability function in proto_http.c
• BZ - 1595865 - ALPN is not enabled due to old OpenSSL dependancy
• BZ - 1649041 - HAProxy 1.8: Seamless reload does not work with send-/accept-proxy
• BZ - 1658874 - CVE-2018-20102 haproxy: Out-of-bounds read in dns.c:dns_validate_dns_response() allows for memory disclosure
• BZ - 1658876 - CVE-2018-20103 haproxy: Infinite recursion via crafted packet allows stack exhaustion and denial of service

CVEs

• CVE-2018-11469
• CVE-2018-20102
• CVE-2018-20103

References

• https://access.redhat.com/security/updates/classification/#moderate
• https://access.redhat.com/documentation/en-us/red_hat_software_collections/3/html-single/3.3_release_notes/