high
7.5
CWE
835
Advisory Published
Updated

CVE-2018-20103

First published: Wed Dec 12 2018(Updated: )

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.

Credit: cve@mitre.org cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Haproxy Haproxy<=1.8.14
Canonical Ubuntu Linux=16.04
Canonical Ubuntu Linux=18.04
Canonical Ubuntu Linux=18.10
Redhat Openshift Container Platform=3.11
ubuntu/haproxy<1.8.15-1
1.8.15-1
ubuntu/haproxy<1.8.8-1ubuntu0.3
1.8.8-1ubuntu0.3
ubuntu/haproxy<1.8.13-2ubuntu0.1
1.8.13-2ubuntu0.1
redhat/haproxy<1.8.15
1.8.15
debian/haproxy
1.8.19-1+deb10u3
1.8.19-1+deb10u5
2.2.9-2+deb11u6
2.6.12-1+deb12u1
2.9.5-1
2.9.7-1

Remedy

http://git.haproxy.org/?p=haproxy.git;a=commit;h=58df5aea0a0c926b2238f65908f5e9f83d1cca25

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is CVE-2018-20103?

    CVE-2018-20103 is a vulnerability in HAProxy versions through 1.8.14 that allows for infinite recursion or stack exhaustion through a crafted packet.

  • How severe is CVE-2018-20103?

    CVE-2018-20103 has a severity rating of 7.5, which is considered high.

  • How can I fix CVE-2018-20103?

    To fix CVE-2018-20103, you should update to HAProxy version 1.8.15 or later.

  • Where can I find more information about CVE-2018-20103?

    You can find more information about CVE-2018-20103 at the following references: [http://git.haproxy.org/?p=haproxy.git;a=commit;h=58df5aea0a0c926b2238f65908f5e9f83d1cca25](http://git.haproxy.org/?p=haproxy.git;a=commit;h=58df5aea0a0c926b2238f65908f5e9f83d1cca25), [http://www.securityfocus.com/bid/106280](http://www.securityfocus.com/bid/106280), [https://access.redhat.com/errata/RHBA-2019:0326](https://access.redhat.com/errata/RHBA-2019:0326).

  • What is the CWE number for CVE-2018-20103?

    The CWE number for CVE-2018-20103 is 835.

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