CVE-2018-20102
First published: Wed Dec 12 2018(Updated: )
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.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How 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 | |
| redhat/haproxy | <1.8.15 | 1.8.15 |
| ubuntu/haproxy | <1.8.8-1ubuntu0.3 | 1.8.8-1ubuntu0.3 |
| ubuntu/haproxy | <1.8.13-2ubuntu0.1 | 1.8.13-2ubuntu0.1 |
| ubuntu/haproxy | <1.8.15-1 | 1.8.15-1 |
| ubuntu/haproxy | <1.6.3-1ubuntu0.2 | 1.6.3-1ubuntu0.2 |
| debian/haproxy | 2.2.9-2+deb11u6 2.6.12-1+deb12u1 2.9.9-1 |
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Reference Links
- http://git.haproxy.org/?p=haproxy.git;a=commit;h=efbbdf72992cd20458259962346044cafd9331c0
- http://www.securityfocus.com/bid/106223
- https://access.redhat.com/errata/RHBA-2019:0326
- https://access.redhat.com/errata/RHBA-2019:0327
- https://access.redhat.com/errata/RHSA-2019:1436
- https://lists.debian.org/debian-lts-announce/2022/05/msg00045.html
- https://usn.ubuntu.com/3858-1/
- https://launchpad.net/bugs/cve/CVE-2018-20102
- http://git.haproxy.org/?p=haproxy.git%3Ba=commit%3Bh=efbbdf72992cd20458259962346044cafd9331c0
- http://git.haproxy.org/?p=haproxy.git;a=commit;h=efbbdf72
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1658882
- https://www.mail-archive.com/haproxy@formilux.org/msg32055.html
- https://access.redhat.com/security/cve/cve-2018-20102
- https://bugzilla.redhat.com/show_bug.cgi?id=1658874
- https://security-tracker.debian.org/tracker/CVE-2018-20102
- https://ubuntu.com/security/notices/USN-3858-1
- https://www.cve.org/CVERecord?id=CVE-2018-20102
- https://nvd.nist.gov/vuln/detail/CVE-2018-20102
- https://ubuntu.com/security/CVE-2018-20102
Frequently Asked Questions
What is CVE-2018-20102?
CVE-2018-20102 is an out-of-bounds read vulnerability discovered in HAProxy through version 1.8.14.
How severe is CVE-2018-20102?
CVE-2018-20102 has a severity score of 7.5, which is considered high.
Which software is affected by CVE-2018-20102?
The affected software includes HAProxy versions 1.8.14 to 1.8.19, 2.2.9, 2.6.12, and 2.6.15.
How can I fix CVE-2018-20102?
To fix CVE-2018-20102, update HAProxy to version 1.8.19-1+deb10u3, 1.8.19-1+deb10u4, 2.2.9-2+deb11u5, 2.6.12-1, or 2.6.15-1.
Where can I find more information about CVE-2018-20102?
You can find more information about CVE-2018-20102 in the references provided: http://git.haproxy.org/?p=haproxy.git;a=commit;h=efbbdf72992cd20458259962346044cafd9331c0, http://www.securityfocus.com/bid/106223, https://access.redhat.com/errata/RHBA-2019:0326
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