Bug 1777584 (CVE-2019-19330) - CVE-2019-19330 haproxy: HTTP/2 implementation vulnerable to intermediary encapsulation attacks
Summary: CVE-2019-19330 haproxy: HTTP/2 implementation vulnerable to intermediary enca...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2019-19330
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1777585 1779022 1779023 1781027 1781028 1781029 1781030 1788780
Blocks: 1777586
TreeView+ depends on / blocked
 
Reported: 2019-11-27 21:39 UTC by Pedro Sampaio
Modified: 2021-02-16 20:58 UTC (History)
13 users (show)

Fixed In Version: haproxy 2.0.10, haproxy 1.8.23
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Clone Of:
Environment:
Last Closed: 2020-04-07 22:31:52 UTC
Embargoed:

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Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2020:1287 0 None None None 2020-04-07 19:43:15 UTC
Red Hat Product Errata RHSA-2020:1725 0 None None None 2020-04-28 15:44:51 UTC
Red Hat Product Errata RHSA-2020:1936 0 None None None 2020-05-04 10:17:45 UTC
Red Hat Product Errata RHSA-2020:2265 0 None None None 2020-05-26 07:35:26 UTC

Description Pedro Sampaio 2019-11-27 21:39:24 UTC 
The HTTP/2 implementation in HAProxy before 2.0.10 mishandles headers, as demonstrated by carriage return (CR, ASCII 0xd), line feed (LF, ASCII 0xa), and the zero character (NUL, ASCII 0x0), aka Intermediary Encapsulation Attacks.

Upstream patch:

https://git.haproxy.org/?p=haproxy.git;a=commit;h=54f53ef7ce4102be596130b44c768d1818570344
https://git.haproxy.org/?p=haproxy.git;a=commit;h=146f53ae7e97dbfe496d0445c2802dd0a30b0878
https://git.haproxy.org/?p=haproxy-2.0.git;a=commit;h=ac198b92d461515551b95daae20954b3053ce87e
Comment 1 Pedro Sampaio 2019-11-27 21:39:45 UTC 
Created haproxy tracking bugs for this issue:

Affects: fedora-all [bug 1777585]
Comment 6 Sam Fowler 2019-12-11 04:25:32 UTC 
Statement:

Support for HTTP/2 protocol was added to haproxy in version 1.8, therefore previous versions are not affected by this flaw.

The version of haproxy shipped in OpenShift Container Platform 4 contains the vulnerable code, however exploitation requires setting ROUTER_USE_HTTP2 in the OpenShift Ingress Operator, which is not currently possible. The impact of this vulnerability is therefore reduced in OpenShift Container Platform 4 to Low.
Comment 8 Tomas Hoger 2020-04-01 21:00:19 UTC 
Fixes for haproxy 1.8:

http://git.haproxy.org/?p=haproxy-1.8.git;a=commitdiff;h=b8d65bb1f52849665ef6f21d90ec5fc3b7c00bc6
http://git.haproxy.org/?p=haproxy-1.8.git;a=commitdiff;h=4b37de078bfa850ea3d08d02e23b912fd5f8c168

Applied in version 1.8.23.
Comment 9 errata-xmlrpc 2020-04-07 19:43:13 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 3.11

Via RHSA-2020:1287 https://access.redhat.com/errata/RHSA-2020:1287
Comment 10 Product Security DevOps Team 2020-04-07 22:31:52 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2019-19330
Comment 11 errata-xmlrpc 2020-04-28 15:44:50 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2020:1725 https://access.redhat.com/errata/RHSA-2020:1725
Comment 12 errata-xmlrpc 2020-05-04 10:17:42 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.4

Via RHSA-2020:1936 https://access.redhat.com/errata/RHSA-2020:1936
Comment 13 errata-xmlrpc 2020-05-26 07:35:25 UTC 
This issue has been addressed in the following products:

  Red Hat Software Collections for Red Hat Enterprise Linux 7
  Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS
  Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUS

Via RHSA-2020:2265 https://access.redhat.com/errata/RHSA-2020:2265
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