haproxy: Infinite recursion via crafted packet allows stack exhaustion and denial of service
Published Dec 12, 2018
7.5
HIGHCVSS 3.0
EPSS 6.59%
Description
An issue was discovered in dns.c in HAProxy through 1.8.14. In the case of a compressed pointer, a crafted packet can trigger infinite recursion by making the pointer point to itself, or create a long chain of valid pointers resulting in stack exhaustion.
Affected products
No data.
Configuration 2
- 16.04
- 18.04
- 18.10
Configuration 3
- 3.11
No data.
Red Hat OpenShift Container Platform 3.11
atomic-enterprise-service-catalog-1:3.11.82-1.git.1673.133961e.el7
Fixed · RHBA-2019:0326
Red Hat OpenShift Container Platform 3.11
atomic-openshift-0:3.11.82-1.git.0.08bc31b.el7
Fixed · RHBA-2019:0326
Red Hat OpenShift Container Platform 3.11
atomic-openshift-cluster-autoscaler-0:3.11.82-1.git.0.efb6af0.el7
Fixed · RHBA-2019:0326
Red Hat OpenShift Container Platform 3.11
atomic-openshift-descheduler-0:3.11.82-1.git.300.89765c9.el7
Fixed · RHBA-2019:0326
Red Hat OpenShift Container Platform 3.11
atomic-openshift-dockerregistry-0:3.11.82-1.git.452.0ce6383.el7
Fixed · RHBA-2019:0326
Red Hat OpenShift Container Platform 3.11
atomic-openshift-metrics-server-0:3.11.82-1.git.52.2fdca3f.el7
Fixed · RHBA-2019:0326
Red Hat OpenShift Container Platform 3.11
atomic-openshift-node-problem-detector-0:3.11.82-1.git.254.a448936.el7
Fixed · RHBA-2019:0326
Red Hat OpenShift Container Platform 3.11
atomic-openshift-service-idler-0:3.11.82-1.git.14.e353758.el7
Fixed · RHBA-2019:0326
Red Hat OpenShift Container Platform 3.11
atomic-openshift-web-console-0:3.11.82-1.git.355.5e8b1d9.el7
Fixed · RHBA-2019:0326
Red Hat OpenShift Container Platform 3.11
golang-github-openshift-oauth-proxy-0:3.11.82-1.git.425.7cac034.el7
Fixed · RHBA-2019:0326
Red Hat OpenShift Container Platform 3.11
golang-github-prometheus-alertmanager-0:3.11.82-1.git.0.3bf41ce.el7
Fixed · RHBA-2019:0326
Red Hat OpenShift Container Platform 3.11
golang-github-prometheus-node_exporter-0:3.11.82-1.git.1063.48444e8.el7
Fixed · RHBA-2019:0326
Red Hat OpenShift Container Platform 3.11
golang-github-prometheus-prometheus-0:3.11.82-1.git.5027.9d24833.el7
Fixed · RHBA-2019:0326
Red Hat OpenShift Container Platform 3.11
haproxy-0:1.8.17-3.el7
Fixed · RHBA-2019:0326
Red Hat OpenShift Container Platform 3.11
jenkins-0:2.150.2.1549032159-1.el7
Fixed · RHBA-2019:0326
Red Hat OpenShift Container Platform 3.11
jenkins-2-plugins-0:3.11.1549642489-1.el7
Fixed · RHBA-2019:0326
Red Hat OpenShift Container Platform 3.11
openshift-ansible-0:3.11.82-3.git.0.9718d0a.el7
Fixed · RHBA-2019:0326
Red Hat OpenShift Container Platform 3.11
openshift-enterprise-autoheal-0:3.11.82-1.git.219.0b5aff4.el7
Fixed · RHBA-2019:0326
Red Hat OpenShift Container Platform 3.11
openshift-enterprise-cluster-capacity-0:3.11.82-1.git.380.cf11c51.el7
Fixed · RHBA-2019:0326
Red Hat Software Collections for Red Hat Enterprise Linux 7
rh-haproxy18-haproxy-0:1.8.17-1.el7
Fixed · RHSA-2019:1436
Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUS
rh-haproxy18-haproxy-0:1.8.17-1.el7
Fixed · RHSA-2019:1436
Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUS
rh-haproxy18-haproxy-0:1.8.17-1.el7
Fixed · RHSA-2019:1436
Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS
rh-haproxy18-haproxy-0:1.8.17-1.el7
Fixed · RHSA-2019:1436
Red Hat Enterprise Linux 6
haproxy
Not affected
Red Hat Enterprise Linux 7
haproxy
Not affected
Red Hat Enterprise Linux 8
haproxy
Not affected
Red Hat OpenShift Container Platform 3.10
haproxy
Affected
Red Hat OpenShift Container Platform 3.7
haproxy
Affected
Red Hat OpenShift Container Platform 3.9
haproxy
Affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat OpenShift Container Platform 3.11 | atomic-enterprise-service-catalog-1:3.11.82-1.git.1673.133961e.el7 | Fixed | RHBA-2019:0326 |
| Red Hat OpenShift Container Platform 3.11 | atomic-openshift-0:3.11.82-1.git.0.08bc31b.el7 | Fixed | RHBA-2019:0326 |
| Red Hat OpenShift Container Platform 3.11 | atomic-openshift-cluster-autoscaler-0:3.11.82-1.git.0.efb6af0.el7 | Fixed | RHBA-2019:0326 |
| Red Hat OpenShift Container Platform 3.11 | atomic-openshift-descheduler-0:3.11.82-1.git.300.89765c9.el7 | Fixed | RHBA-2019:0326 |
| Red Hat OpenShift Container Platform 3.11 | atomic-openshift-dockerregistry-0:3.11.82-1.git.452.0ce6383.el7 | Fixed | RHBA-2019:0326 |
| Red Hat OpenShift Container Platform 3.11 | atomic-openshift-metrics-server-0:3.11.82-1.git.52.2fdca3f.el7 | Fixed | RHBA-2019:0326 |
| Red Hat OpenShift Container Platform 3.11 | atomic-openshift-node-problem-detector-0:3.11.82-1.git.254.a448936.el7 | Fixed | RHBA-2019:0326 |
| Red Hat OpenShift Container Platform 3.11 | atomic-openshift-service-idler-0:3.11.82-1.git.14.e353758.el7 | Fixed | RHBA-2019:0326 |
| Red Hat OpenShift Container Platform 3.11 | atomic-openshift-web-console-0:3.11.82-1.git.355.5e8b1d9.el7 | Fixed | RHBA-2019:0326 |
| Red Hat OpenShift Container Platform 3.11 | golang-github-openshift-oauth-proxy-0:3.11.82-1.git.425.7cac034.el7 | Fixed | RHBA-2019:0326 |
| Red Hat OpenShift Container Platform 3.11 | golang-github-prometheus-alertmanager-0:3.11.82-1.git.0.3bf41ce.el7 | Fixed | RHBA-2019:0326 |
| Red Hat OpenShift Container Platform 3.11 | golang-github-prometheus-node_exporter-0:3.11.82-1.git.1063.48444e8.el7 | Fixed | RHBA-2019:0326 |
| Red Hat OpenShift Container Platform 3.11 | golang-github-prometheus-prometheus-0:3.11.82-1.git.5027.9d24833.el7 | Fixed | RHBA-2019:0326 |
| Red Hat OpenShift Container Platform 3.11 | haproxy-0:1.8.17-3.el7 | Fixed | RHBA-2019:0326 |
| Red Hat OpenShift Container Platform 3.11 | jenkins-0:2.150.2.1549032159-1.el7 | Fixed | RHBA-2019:0326 |
| Red Hat OpenShift Container Platform 3.11 | jenkins-2-plugins-0:3.11.1549642489-1.el7 | Fixed | RHBA-2019:0326 |
| Red Hat OpenShift Container Platform 3.11 | openshift-ansible-0:3.11.82-3.git.0.9718d0a.el7 | Fixed | RHBA-2019:0326 |
| Red Hat OpenShift Container Platform 3.11 | openshift-enterprise-autoheal-0:3.11.82-1.git.219.0b5aff4.el7 | Fixed | RHBA-2019:0326 |
| Red Hat OpenShift Container Platform 3.11 | openshift-enterprise-cluster-capacity-0:3.11.82-1.git.380.cf11c51.el7 | Fixed | RHBA-2019:0326 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7 | rh-haproxy18-haproxy-0:1.8.17-1.el7 | Fixed | RHSA-2019:1436 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUS | rh-haproxy18-haproxy-0:1.8.17-1.el7 | Fixed | RHSA-2019:1436 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUS | rh-haproxy18-haproxy-0:1.8.17-1.el7 | Fixed | RHSA-2019:1436 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS | rh-haproxy18-haproxy-0:1.8.17-1.el7 | Fixed | RHSA-2019:1436 |
| Red Hat Enterprise Linux 6 | haproxy | Not affected | n/a |
| Red Hat Enterprise Linux 7 | haproxy | Not affected | n/a |
| Red Hat Enterprise Linux 8 | haproxy | Not affected | n/a |
| Red Hat OpenShift Container Platform 3.10 | haproxy | Affected | n/a |
| Red Hat OpenShift Container Platform 3.7 | haproxy | Affected | n/a |
| Red Hat OpenShift Container Platform 3.9 | haproxy | Affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue did not affect the versions of haproxy as shipped with Red Hat Enterprise Linux 6 and 7.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AV:N/AC:L/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (18 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 6.59% (0.06593) | 93.64th | v5 (v2026.06.15) |
| Jun 15, 2026 | 6.59% (0.06593) | 92.95th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.03% (0.00034) | 6.51th | v4 (v2025.03.14) |
| Jul 20, 2024 | 0.87% (0.00869) | 82.58th | v3 (v2023.03.01) |
| Jun 13, 2024 | 0.87% (0.00869) | 82.45th | v3 (v2023.03.01) |
| May 4, 2024 | 1.02% (0.01021) | 83.67th | v3 (v2023.03.01) |
| Dec 6, 2023 | 1.47% (0.01466) | 85.24th | v3 (v2023.03.01) |
| Nov 8, 2023 | 1.58% (0.01578) | 85.83th | v3 (v2023.03.01) |
| May 10, 2023 | 1.23% (0.01227) | 83.32th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.69% (0.01688) | 85.73th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.11% (0.01108) | 55.18th | v2 (v2022.01.01) |
| Sep 17, 2022 | 1.11% (0.01108) | 53.57th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.11% (0.01108) | 51.54th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.11% (0.01108) | 29.61th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.45% (0.01454) | 32.67th | v1 |
| Jan 6, 2022 | 1.45% (0.01454) | 31.96th | v1 |
| Sep 1, 2021 | 1.45% (0.01454) | 71.88th | v1 |
| Apr 14, 2021 | 1.45% (0.01454) | 0.00th | v1 |
References (12)
- http://git.haproxy.org/?p=haproxy.git%3Ba=commit%3Bh=58df5aea0a0c926b2238f65908f5e9f83d1cca25 x_refsource_MISC
- http://www.securityfocus.com/bid/106280 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHBA-2019:0326 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHBA-2019:0327 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2019:1436 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2018-20103 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1658876 Issue Tracking
- https://lists.debian.org/debian-lts-announce/2022/05/msg00045.html mailing-listx_refsource_MLIST
- https://nvd.nist.gov/vuln/detail/CVE-2018-20103
- https://usn.ubuntu.com/3858-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2018-20103
- https://www.mail-archive.com/haproxy@formilux.org/msg32055.html
| Link | Providers | Tags |
|---|---|---|
| http://git.haproxy.org/?p=haproxy.git%3Ba=commit%3Bh=58df5aea0a0c926b2238f65908f5e9f83d1cca25 | x_refsource_MISC | |
| http://www.securityfocus.com/bid/106280 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| https://access.redhat.com/errata/RHBA-2019:0326 | vendor-advisoryx_refsource_REDHATThird Party Advisory | |
| https://access.redhat.com/errata/RHBA-2019:0327 | vendor-advisoryx_refsource_REDHATThird Party Advisory | |
| https://access.redhat.com/errata/RHSA-2019:1436 | vendor-advisoryx_refsource_REDHAT | |
| https://access.redhat.com/security/cve/CVE-2018-20103 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1658876 | Issue Tracking | |
| https://lists.debian.org/debian-lts-announce/2022/05/msg00045.html | mailing-listx_refsource_MLIST | |
| https://nvd.nist.gov/vuln/detail/CVE-2018-20103 | ||
| https://usn.ubuntu.com/3858-1/ | vendor-advisoryx_refsource_UBUNTUThird Party Advisory | |
| https://www.cve.org/CVERecord?id=CVE-2018-20103 | ||
| https://www.mail-archive.com/haproxy@formilux.org/msg32055.html |
Change history (0)
No recorded changes yet.