CVE-2018-16875
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (6.38%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 6.38% probability · 94th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-20, CWE-295
- Affected
- golang/go · opensuse/leap
- Source
- secalert@redhat.com
EPSS 6.4% since 27 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00044.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00060.html
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00011.html
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00015.html
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00010.html
- http://www.securityfocus.com/bid/106230Third Party Advisory, VDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16875Issue Tracking, Third Party Advisory
- https://groups.google.com/forum/?pli=1#%21topic/golang-announce/Kw31K8G7Fi0
- https://security.gentoo.org/glsa/201812-09Mitigation, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00044.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00060.html
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00011.html
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00015.html
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00010.html
- http://www.securityfocus.com/bid/106230Third Party Advisory, VDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16875Issue Tracking, Third Party Advisory
- https://groups.google.com/forum/?pli=1#%21topic/golang-announce/Kw31K8G7Fi0
- https://security.gentoo.org/glsa/201812-09Mitigation, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.