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Red Hat Enterprise Linux 8: RHSA-2020-1725-01 Moderate: haproxy HTTP Attack

red hat
Calendar Grey April 28, 2020
Dist Redhat Esm H88
Moderate security updates and bug fixes for HAProxy are now available in Red Hat Enterprise Linux 8. System admins should apply these updates to ensure security and system integrity.
An update for haproxy is now available for Red Hat Enterprise Linux 8

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

Summary

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.

Topics%20covered

Topics Covered

security advisory bug fix Red Hat Enterprise Linux Moderate haproxy HTTP attack

References

https://access.redhat.com/security/cve/CVE-2019-18277 https://access.redhat.com/security/cve/CVE-2019-19330 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

Package List

Red Hat Enterprise Linux AppStream (v. 8):
Source: haproxy-1.8.23-3.el8.src.rpm
aarch64: haproxy-1.8.23-3.el8.aarch64.rpm haproxy-debuginfo-1.8.23-3.el8.aarch64.rpm haproxy-debugsource-1.8.23-3.el8.aarch64.rpm
ppc64le: haproxy-1.8.23-3.el8.ppc64le.rpm haproxy-debuginfo-1.8.23-3.el8.ppc64le.rpm haproxy-debugsource-1.8.23-3.el8.ppc64le.rpm
s390x: haproxy-1.8.23-3.el8.s390x.rpm haproxy-debuginfo-1.8.23-3.el8.s390x.rpm haproxy-debugsource-1.8.23-3.el8.s390x.rpm
x86_64: haproxy-1.8.23-3.el8.x86_64.rpm haproxy-debuginfo-1.8.23-3.el8.x86_64.rpm haproxy-debugsource-1.8.23-3.el8.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/


Advisory ID: RHSA-2020:1725-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:1725
Issue date: 2020-04-28

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 impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory bug fix Red Hat Enterprise Linux Moderate haproxy HTTP attack

Relevant Releases Architectures

Red Hat Enterprise Linux AppStream (v. 8) - aarch64, ppc64le, s390x, x86_64

Bugs Fixed

1759697 - CVE-2019-18277 haproxy: HTTP request smuggling issue with transfer-encoding header containing an obfuscated "chunked" value

1774745 - Rebase haproxy to latest upstream for RHEL 8.2

1777584 - CVE-2019-19330 haproxy: HTTP/2 implementation vulnerable to intermediary encapsulation attacks

1778844 - haproxy status failed after stopping the service

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