Bug 1658876 (CVE-2018-20103) - CVE-2018-20103 haproxy: Infinite recursion via crafted packet allows stack exhaustion and denial of service
Summary: CVE-2018-20103 haproxy: Infinite recursion via crafted packet allows stack ex...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2018-20103
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1658881 1659018 1659019 1660100 1660101 1660102 1660103
Blocks: 1658879
TreeView+ depends on / blocked
 
Reported: 2018-12-13 05:04 UTC by Sam Fowler
Modified: 2021-02-16 22:39 UTC (History)
20 users (show)

Fixed In Version: haproxy 1.8.15
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Clone Of:
Environment:
Last Closed: 2019-07-12 13:06:25 UTC
Embargoed:

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System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2019:1436 0 None None None 2019-06-11 12:01:33 UTC

Description Sam Fowler 2018-12-13 05:04:27 UTC 
An issue was discovered in dns.c in HAProxy through 1.8.14. In the case of a compressed pointer, a crafted packet can trigger infinite recursion by making the pointer point to itself, or create a long chain of valid pointers resulting in stack exhaustion.


Upstream Patch:

http://git.haproxy.org/?p=haproxy.git;a=commit;h=58df5aea
Comment 1 Sam Fowler 2018-12-13 05:14:54 UTC 
Created haproxy tracking bugs for this issue:

Affects: fedora-all [bug 1658881]
Comment 2 Sam Fowler 2018-12-13 05:34:24 UTC 
External Reference:

https://www.mail-archive.com/haproxy@formilux.org/msg32055.html
Comment 3 Stefan Cornelius 2018-12-13 11:00:44 UTC 
Statement:

This issue did not affect the versions of haproxy as shipped with Red Hat Enterprise Linux 6 and 7.
Comment 6 errata-xmlrpc 2019-06-11 12:01:31 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 7.4 EUS
  Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUS
  Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS

Via RHSA-2019:1436 https://access.redhat.com/errata/RHSA-2019:1436
Comment 7 Product Security DevOps Team 2019-07-12 13:06:25 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-2018-20103
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