CVE-2018-20102

Impact:
Moderate
Public Date:
2018-12-12
CWE:
CWE-125
Bugzilla:
1658874: CVE-2018-20102 haproxy: Out-of-bounds read in dns.c:dns_validate_dns_response() allows for memory disclosure

The MITRE CVE dictionary describes this issue as:

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.

Find out more about CVE-2018-20102 from the MITRE CVE dictionary dictionary and NIST NVD.

Statement

This issue did not affect the versions of haproxy as shipped with Red Hat Enterprise Linux 6 and 7.

Red Hat OpenShift Container Platform 3.10:
This vulnerability is currently targeted to be addressed in an upcoming release.

Red Hat OpenShift Container Platform 3.7:
This vulnerability is currently targeted to be addressed in an upcoming release.

CVSS v3 metrics

CVSS3 Base Score 6.5
CVSS3 Base Metrics CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity Impact None
Availability Impact Low

Red Hat Security Errata

Platform Errata Release Date
Red Hat OpenShift Container Platform 3.9 (haproxy) RHSA-2019:0547 2019-03-14
Red Hat Software Collections for Red Hat Enterprise Linux 7 (rh-haproxy18-haproxy) RHSA-2019:1436 2019-06-11
Red Hat OpenShift Container Platform 3.11 (haproxy) RHBA-2019:0326 2019-02-20

Affected Packages State

Platform Package State
Red Hat OpenShift Container Platform 3.7 haproxy Affected
Red Hat OpenShift Container Platform 3.10 haproxy Affected
Red Hat Enterprise Linux 8 haproxy Not affected
Red Hat Enterprise Linux 7 haproxy Not affected
Red Hat Enterprise Linux 6 haproxy Not affected
Unless explicitly stated as not affected, all previous versions of packages in any minor update stream of a product listed here should be assumed vulnerable, although may not have been subject to full analysis.

External References

Last Modified

CVE description copyright © 2017, The MITRE Corporation