High severity7.5NVD Advisory· Published Dec 12, 2018· Updated Jun 17, 2026
CVE-2018-20102
CVE-2018-20102
Description
An 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.
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Affected products
8- cpe:2.3:a:redhat:openshift_container_platform:3.11:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*+ 2 more
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*
- osv-coordsRange: < 1.8.15~git0.6b6a350a-3.6.2
Patches
Vulnerability mechanics
References
7- www.securityfocus.com/bid/106223nvdThird Party AdvisoryVDB Entry
- access.redhat.com/errata/RHBA-2019:0326nvdThird Party Advisory
- access.redhat.com/errata/RHBA-2019:0327nvdThird Party Advisory
- usn.ubuntu.com/3858-1/nvdThird Party Advisory
- git.haproxy.orgnvd
- access.redhat.com/errata/RHSA-2019:1436nvd
- lists.debian.org/debian-lts-announce/2022/05/msg00045.htmlnvd
News mentions
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