golang: crypto/x509 allows for denial of service via crafted TLS client certificate
Published Dec 14, 2018
7.5
HIGHCVSS 3.0
EPSS 6.38%
Description
The crypto/x509 package of Go before 1.10.6 and 1.11.x before 1.11.3 does not limit the amount of work performed for each chain verification, which might allow attackers to craft pathological inputs leading to a CPU denial of service. Go TLS servers accepting client certificates and TLS clients are affected.
Affected products
- Vendor n/a Product Golang Defaultn/a
- Version 1.10.6StatusaffectedConstraints-
- Version 1.11.3StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| n/a | Golang | n/a |
|
No data.
Red Hat Ceph Storage 2
golang
Will not fix
Red Hat Ceph Storage 3
golang
Affected
Red Hat Enterprise Linux 7
golang
Will not fix
Red Hat Enterprise Linux 8
go-toolset:rhel8/golang
Not affected
Red Hat OpenShift Container Platform 3.10
atomic-openshift
Fix deferred
Red Hat OpenShift Container Platform 3.11
atomic-openshift
Not affected
Red Hat OpenShift Container Platform 3.7
atomic-openshift
Out of support scope
Red Hat OpenShift Container Platform 3.9
atomic-openshift
Fix deferred
Red Hat OpenShift Container Platform 4
openshift
Not affected
Red Hat OpenStack Platform 8 (Liberty) Operational Tools
golang
Not affected
Red Hat OpenStack Platform 9 (Mitaka) Operational Tools
golang
Not affected
Red Hat Storage 3
golang
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Ceph Storage 2 | golang | Will not fix | n/a |
| Red Hat Ceph Storage 3 | golang | Affected | n/a |
| Red Hat Enterprise Linux 7 | golang | Will not fix | n/a |
| Red Hat Enterprise Linux 8 | go-toolset:rhel8/golang | Not affected | n/a |
| Red Hat OpenShift Container Platform 3.10 | atomic-openshift | Fix deferred | n/a |
| Red Hat OpenShift Container Platform 3.11 | atomic-openshift | Not affected | n/a |
| Red Hat OpenShift Container Platform 3.7 | atomic-openshift | Out of support scope | n/a |
| Red Hat OpenShift Container Platform 3.9 | atomic-openshift | Fix deferred | n/a |
| Red Hat OpenShift Container Platform 4 | openshift | Not affected | n/a |
| Red Hat OpenStack Platform 8 (Liberty) Operational Tools | golang | Not affected | n/a |
| Red Hat OpenStack Platform 9 (Mitaka) Operational Tools | golang | Not affected | n/a |
| Red Hat Storage 3 | golang | Will not fix | n/a |
stdlib
Go
Introduced 0 Fixed 1.10.6stdlib
Go
Introduced 1.11.0-0 Fixed 1.11.3
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| Go | stdlib | 0 | 1.10.6 |
| Go | stdlib | 1.11.0-0 | 1.11.3 |
Remediation
Red Hat statement
This issue affects the version of golang package in Red Hat Enterprise Linux 7. The golang package, previously available in the Optional channel, will no longer receive updates in Red Hat Enterprise Linux 7. Developers are encouraged to use the Go Toolset instead, which is available through the Red Hat Developer program. https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/7.6_release_notes/chap-red_hat_enterprise_linux-7.6_release_notes-deprecated_functionality_in_rhel7#idm139716309923696
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
1 other source (Red Hat) ▾
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
AV:N/AC:L/Au:N/C:N/I:N/A:C
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 (25 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 6.38% (0.06377) | 93.45th | v5 (v2026.06.15) |
| Jun 15, 2026 | 6.33% (0.06325) | 92.70th | v5 (v2026.06.15) |
| Nov 21, 2025 | 0.96% (0.00962) | 75.80th | v4 (v2025.03.14) |
| Nov 18, 2025 | 5.92% (0.05922) | 89.69th | v4 (v2025.03.14) |
| Aug 28, 2025 | 1.52% (0.01525) | 80.54th | v4 (v2025.03.14) |
| Mar 30, 2025 | 3.48% (0.03484) | 86.46th | v4 (v2025.03.14) |
| Mar 29, 2025 | 39.39% (0.39391) | 95.91th | v4 (v2025.03.14) |
| Mar 28, 2025 | 3.48% (0.03484) | 86.48th | v4 (v2025.03.14) |
| Mar 27, 2025 | 39.39% (0.39391) | 96.80th | v4 (v2025.03.14) |
| Mar 20, 2025 | 21.15% (0.21146) | 95.20th | v4 (v2025.03.14) |
| Mar 19, 2025 | 39.39% (0.39391) | 96.86th | v4 (v2025.03.14) |
| Mar 17, 2025 | 21.15% (0.21146) | 95.19th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.47% (0.00472) | 76.45th | v3 (v2023.03.01) |
| Jun 15, 2024 | 0.47% (0.00472) | 75.75th | v3 (v2023.03.01) |
| May 6, 2024 | 0.58% (0.00577) | 77.88th | v3 (v2023.03.01) |
| May 1, 2024 | 0.72% (0.00719) | 80.37th | v3 (v2023.03.01) |
| Dec 8, 2023 | 0.72% (0.00719) | 78.37th | v3 (v2023.03.01) |
| Nov 8, 2023 | 0.94% (0.00937) | 81.23th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.05% (0.01048) | 81.70th | v3 (v2023.03.01) |
| Mar 6, 2023 | 29.82% (0.29823) | 97.49th | v2 (v2022.01.01) |
| Feb 4, 2022 | 29.82% (0.29823) | 96.29th | v2 (v2022.01.01) |
| Feb 3, 2022 | 10.57% (0.10570) | 87.62th | v1 |
| Jan 6, 2022 | 10.57% (0.10570) | 87.47th | v1 |
| Sep 1, 2021 | 10.57% (0.10570) | 95.09th | v1 |
| Apr 14, 2021 | 10.57% (0.10570) | 0.00th | v1 |
References (15)
- http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00044.html vendor-advisoryx_refsource_SUSEThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00060.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00011.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00015.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00010.html vendor-advisoryx_refsource_SUSE
- http://www.securityfocus.com/bid/106230 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2018-16875 Vendor Advisory
- https://apisecurity.io/mutual-tls-authentication-vulnerability-in-go-cve-2018-16875/
- https://bugzilla.redhat.com/show_bug.cgi?id=1657565 Issue Tracking
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16875 x_refsource_CONFIRMIssue TrackingThird Party Advisory
- https://groups.google.com/forum/?pli=1#!topic/golang-announce/Kw31K8G7Fi0
- https://groups.google.com/forum/?pli=1#%21topic/golang-announce/Kw31K8G7Fi0 x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2018-16875
- https://security.gentoo.org/glsa/201812-09 vendor-advisoryx_refsource_GENTOOMitigationThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2018-16875
Change history (6)
- MITRE
- CVSS severity changed from HIGH to
MEDIUM HIGH → MEDIUM
- CVSS vector changed from CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H to
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H → CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- CVSS score changed from 7.5 to
5.9 7.5 → 5.9
- CVSS severity changed from HIGH to
MEDIUM
- REDHAT
- CVSS severity changed from MEDIUM to
HIGH MEDIUM → HIGH
- CVSS vector changed from CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H to
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H → CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CVSS score changed from 5.9 to
7.5 5.9 → 7.5
- CVSS severity changed from MEDIUM to
HIGH