Topic

An update for haproxy is now available for Red Hat Enterprise Linux 8.

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

The haproxy packages provide a reliable, high-performance network load balancer for TCP and HTTP-based applications.

The following packages have been upgraded to a later upstream version: haproxy (1.8.23). (BZ#1774745)

Security Fix(es):

• haproxy: HTTP request smuggling issue with transfer-encoding header containing an obfuscated "chunked" value (CVE-2019-18277)
• haproxy: HTTP/2 implementation vulnerable to intermediary encapsulation attacks (CVE-2019-19330)

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.

Additional Changes:

For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.2 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 Enterprise Linux for x86_64 8 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 8.4 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 8.2 x86_64
• Red Hat Enterprise Linux Server - AUS 8.4 x86_64
• Red Hat Enterprise Linux Server - AUS 8.2 x86_64
• Red Hat Enterprise Linux for IBM z Systems 8 s390x
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 8.4 s390x
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 8.2 s390x
• Red Hat Enterprise Linux for Power, little endian 8 ppc64le
• Red Hat Enterprise Linux for Power, little endian - Extended Update Support 8.4 ppc64le
• Red Hat Enterprise Linux for Power, little endian - Extended Update Support 8.2 ppc64le
• Red Hat Enterprise Linux Server - TUS 8.4 x86_64
• Red Hat Enterprise Linux Server - TUS 8.2 x86_64
• Red Hat Enterprise Linux for ARM 64 8 aarch64
• Red Hat Enterprise Linux for ARM 64 - Extended Update Support 8.4 aarch64
• Red Hat Enterprise Linux for ARM 64 - Extended Update Support 8.2 aarch64
• Red Hat Enterprise Linux Server (for IBM Power LE) - Update Services for SAP Solutions 8.4 ppc64le
• Red Hat Enterprise Linux Server (for IBM Power LE) - Update Services for SAP Solutions 8.2 ppc64le
• Red Hat Enterprise Linux Server - Update Services for SAP Solutions 8.4 x86_64
• Red Hat Enterprise Linux Server - Update Services for SAP Solutions 8.2 x86_64

Fixes

• BZ - 1759697 - CVE-2019-18277 haproxy: HTTP request smuggling issue with transfer-encoding header containing an obfuscated "chunked" value
• BZ - 1774745 - Rebase haproxy to latest upstream for RHEL 8.2
• BZ - 1777584 - CVE-2019-19330 haproxy: HTTP/2 implementation vulnerable to intermediary encapsulation attacks
• BZ - 1778844 - haproxy status failed after stopping the service

CVEs

• CVE-2019-18277
• CVE-2019-19330

References

• https://access.redhat.com/security/updates/classification/#moderate
• https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.2_release_notes/index