CVE-2020-11100
First published: Tue Mar 31 2020(Updated: )
In hpack_dht_insert in hpack-tbl.c in the HPACK decoder in HAProxy 1.8 through 2.x before 2.1.4, a remote attacker can write arbitrary bytes around a certain location on the heap via a crafted HTTP/2 request, possibly causing remote code execution.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/haproxy | 1.8.19-1+deb10u3 1.8.19-1+deb10u4 2.2.9-2+deb11u5 2.6.12-1 2.6.15-1 | |
| ubuntu/haproxy | <1.8.8-1ubuntu0.10 | 1.8.8-1ubuntu0.10 |
| ubuntu/haproxy | <2.0.5-1ubuntu0.4 | 2.0.5-1ubuntu0.4 |
| ubuntu/haproxy | <2.0.14 | 2.0.14 |
| redhat/haproxy | <2.1.4 | 2.1.4 |
| Haproxy Haproxy | >=1.8.0<2.1.4 | |
| Debian Debian Linux | =10.0 | |
| Redhat Openshift Container Platform | =3.11 | |
| Redhat Openshift Container Platform | =4.0 | |
| Fedoraproject Fedora | =30 | |
| Fedoraproject Fedora | =31 | |
| Canonical Ubuntu Linux | =18.04 | |
| Canonical Ubuntu Linux | =19.10 | |
| openSUSE Leap | =15.1 |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=1819111
- https://git.haproxy.org/?p=haproxy.git;a=commit;h=5dfc5d5cd0d2128d77253ead3acf03a421ab5b88
- https://lists.debian.org/debian-security-announce/2020/msg00052.html
- https://www.haproxy.org/download/2.1/src/CHANGELOG
- https://www.mail-archive.com/haproxy@formilux.org/msg36876.html
- http://www.haproxy.org
- https://bugzilla.suse.com/show_bug.cgi?id=1168023
- http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00002.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MNW5RZLIX7LOXRLV7WMHX22CI43XSXKW/
- https://www.debian.org/security/2020/dsa-4649
- https://usn.ubuntu.com/4321-1/
- http://packetstormsecurity.com/files/157323/haproxy-hpack-tbl.c-Out-Of-Bounds-Write.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/264C7UL3X7L7QE74ZJ557IOUFS3J4QQC/
- https://security.gentoo.org/glsa/202012-22
- https://launchpad.net/bugs/cve/CVE-2020-11100
- https://git.haproxy.org/?p=haproxy.git%3Ba=commit%3Bh=5dfc5d5cd0d2128d77253ead3acf03a421ab5b88
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/264C7UL3X7L7QE74ZJ557IOUFS3J4QQC/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MNW5RZLIX7LOXRLV7WMHX22CI43XSXKW/
- https://www.mail-archive.com/haproxy%40formilux.org/msg36876.html
- https://bugzilla.redhat.com/show_bug.cgi/attachment.cgi?id=1675022
- https://bugzilla.redhat.com/show_bug.cgi/attachment.cgi?id=1675022&action=edit
- https://access.redhat.com/security/cve/CVE-2020-11100
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1820185
- https://access.redhat.com/errata/RHSA-2020:1289
- https://access.redhat.com/errata/RHSA-2020:1290
- https://access.redhat.com/errata/RHSA-2020:1288
- https://www.haproxy.com/documentation/hapee/1-8r1/traffic-management/enable-http2-protocol/
- https://access.redhat.com/security/vulnerabilities/haproxy
- https://access.redhat.com/security/cve/cve-2020-11100
- https://access.redhat.com/errata/RHSA-2020:1287
- https://access.redhat.com/errata/RHSA-2020:1936
- https://www.haproxy.com/blog/haproxy-1-8-http-2-hpack-decoder-vulnerability-fixed/
- https://bugs.chromium.org/p/project-zero/issues/detail?id=2023
- https://git.haproxy.org/?p=haproxy-2.1.git;a=commit;h=f17f86304f187b0f10ca6a8d46346afd9851a543
- https://security-tracker.debian.org/tracker/CVE-2020-11100
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-11100
- https://www.mail-archive.com/haproxy@formilux.org/msg36877.html
- https://ubuntu.com/security/notices/USN-4321-1
- https://nvd.nist.gov/vuln/detail/CVE-2020-11100
- https://github.com/haproxy/haproxy/commit/5dfc5d5cd0d2128d77253ead3acf03a421ab5b88
- https://ubuntu.com/security/CVE-2020-11100
Frequently Asked Questions
What is the vulnerability ID for this issue?
The vulnerability ID for this issue is CVE-2020-11100.
What is the severity of CVE-2020-11100?
The severity of CVE-2020-11100 is high with a severity value of 8.8.
What software versions are affected by CVE-2020-11100?
The versions affected by CVE-2020-11100 include HAProxy 1.8 through 2.x before 2.1.4.
How can a remote attacker exploit CVE-2020-11100?
A remote attacker can exploit CVE-2020-11100 by sending a crafted HTTP/2 request, which can allow them to write arbitrary bytes around a certain location on the heap, possibly leading to remote code execution.
Are there any remediation steps available for CVE-2020-11100?
Yes, there are remediation steps available for CVE-2020-11100. Please refer to the official references for more information on how to mitigate this vulnerability.
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