Description
A flaw was discovered in the HPACK decoder of HAProxy, before 1.8.14, that is used for HTTP/2. An out-of-bounds read access in hpack_valid_idx() resulted in a remote crash and denial of service.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| [UNKNOWN] | haproxy | 1.8.14 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | haproxy | 1.8.13-2 | — |
| Debian 13 | haproxy | 1.8.13-2 | — |
| Debian 12 | haproxy | 1.8.13-2 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | haproxy | 1.8.8-1ubuntu0.2 | USN-3780-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 3 | rh-haproxy18-haproxy +1 | 1.8.4-3.el7 | RHSA-2018:2882 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat OpenShift 3 | atomic-openshift +13 | 3.9.60-1.git.0.f8b38ff.el7 | RHSA-2018:2709, RHBA-2019:0028 |
| Red Hat OpenShift 3 | atomic-openshift-dockerregistry | 3.9.60-1.git.353.1da3b27.el7 | RHBA-2019:0028 |
| Red Hat OpenShift 3 | atomic-openshift-hyperkube +1 | 3.10.66-1.git.0.91d1e89.el7 | RHSA-2018:2709 |
| Red Hat OpenShift 3 | atomic-openshift-web-console | 3.9.60-1.git.277.be8dbdd.el7 | RHBA-2019:0028 |
| Red Hat OpenShift 3 | haproxy +1 | 1.8.14-2.el7 | RHSA-2018:2709, RHBA-2019:0028 |
| Red Hat OpenShift 3 | openshift-ansible +4 | 3.9.60-1.git.0.f0ebfaa.el7 | RHBA-2019:0028 |
| Red Hat OpenShift 3 | prometheus-node-exporter +1 | 3.9.60-1.git.1063.df94c95.el7 | RHBA-2019:0028 |
| Red Hat OpenShift 3 | rubygem-ffi | 1.9.25-4.el7_5 | RHBA-2019:0028 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 | haproxy | 1.8.14~git0.52e4d43b-3.3.2 | SUSE-SU-2018:3249-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | haproxy | 2.4.4+git0.acb1d0bea-1.2 | openSUSE-SU-2024:10839-1 |
Advisories 6
- RHBA-2019:0028 Red Hat Bug Fix Advisory: OpenShift Container Platform 3.9 bug fix and enhancement update Red Hat Security Advisories (RHSA) · Jul 1, 2026
- RHSA-2018:2882 Red Hat Security Advisory: rh-haproxy18-haproxy security update Red Hat Security Advisories (RHSA) · Jul 1, 2026
- RHSA-2018:2709 Red Hat Security Advisory: Red Hat OpenShift Container Platform 3.10 security and bug fix update Red Hat Security Advisories (RHSA) · Jul 1, 2026
- USN-3780-1 haproxy vulnerability Ubuntu Security Notices (USN) · Feb 10, 2026
- openSUSE-SU-2024:10839-1 haproxy-2.4.4+git0.acb1d0bea-1.2 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:3249-1 Security update for haproxy SUSE / openSUSE Security Updates · Feb 4, 2026
References
- USN-3780-1 vendor-advisory
- RHSA-2018:2882 vendor-advisory
- [haproxy] 20180920 [ANNOUNCE] haproxy-1.8.14 - Security Update mailing-list
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14645
- RHBA-2019:0028 vendor-advisory