CVE-2018-20102

Summary

CVECVE-2018-20102
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2018-12-12 17:29:00 UTC
Updated2023-11-07 02:56:00 UTC
DescriptionAn out-of-bounds read in dns_validate_dns_response in dns.c was discovered in HAProxy through 1.8.14. Due to a missing check when validating DNS responses, remote attackers might be able read the 16 bytes corresponding to an AAAA record from the non-initialized part of the buffer, possibly accessing anything that was left on the stack, or even past the end of the 8193-byte buffer, depending on the value of accepted_payload_size.

Risk And Classification

Problem Types: CWE-125

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Canonical Ubuntu Linux 16.04 All All All
Operating System Canonical Ubuntu Linux 18.04 All All All
Operating System Canonical Ubuntu Linux 18.10 All All All
Operating System Canonical Ubuntu Linux 16.04 All All All
Operating System Canonical Ubuntu Linux 18.04 All All All
Operating System Canonical Ubuntu Linux 18.10 All All All
Application Haproxy Haproxy All All All All
Application Redhat Openshift Container Platform 3.11 All All All
Application Redhat Openshift Container Platform 3.11 All All All

References

ReferenceSourceLinkTags
Repositories - haproxy.git/commit git.haproxy.org
HAProxy CVE-2018-20102 Out-of-Bounds Read Memory Corruption Vulnerability BID www.securityfocus.com Third Party Advisory, VDB Entry
Repositories - haproxy.git/commit MISC git.haproxy.org Patch, Third Party Advisory
USN-3858-1: HAProxy vulnerabilities | Ubuntu security notices UBUNTU usn.ubuntu.com Third Party Advisory
[SECURITY] [DLA 3034-1] haproxy security update MLIST lists.debian.org
Red Hat Customer Portal REDHAT access.redhat.com Third Party Advisory
Red Hat Customer Portal REDHAT access.redhat.com Third Party Advisory
Red Hat Customer Portal REDHAT access.redhat.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 179335 Debian Security Update for haproxy (DLA 3034-1)
  • 356219 Amazon Linux Security Advisory for haproxy2 : ALASHAPROXY2-2023-002
© CVE.report 2026 |

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

CVE.report and Source URL Uptime Status status.cve.report