CVE-2018-16875: golang go Improper Input Validation
Vulnerability summary
CVE-2018-16875 is a high (CVSS 7.8) Improper Input Validation vulnerability in golang go. EPSS estimates a 6.48% chance of exploitation in the next 30 days, higher than 93.7% of scored vulnerabilities.
Not severe (CVSS 5.9, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 33 · Related 33Timeline
- 14-12-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
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 metrics
4 scores · 3 sources · 2 versions- NVDNIST7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HDiffers
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HDiffers
EPSS trend
Probability
6.48%
Chance of exploitation in the next 30 days
Percentile
94%
Versus all other CVEs
30-day change
Increase +0.10 pp
From 6.38% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-20Improper Input ValidationThe product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
- CWE-295Improper Certificate ValidationThe product does not validate, or incorrectly validates, a certificate.
Affected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu4 products
- golang-1.10All versions (No fix recorded)
- golang-1.6All versions (No fix recorded)
- golang-1.8All versions (No fix recorded)
- golang-1.9All versions (No fix recorded)
[unknown]1 product
- golang1.10.6 | 1.11.3
Go1 product
- stdlib≥ 1.11.0-0, < 1.11.3
Golang1 product
- go< 1.10.6 | ≥ 1.11.0, < 1.11.3
Opensuse1 product
- leapEOL42.3
5 vendors · 8 products
References
16 links- bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16875X Refsource CONFIRMIssue TrackingThird Party Advisory
- groups.google.com/forum/?pli=1X Refsource MISC
- lists.opensuse.org/opensuse-security-announce/2019-03/msg00044.htmlVendor AdvisoryX Refsource SUSEThird Party Advisory