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TI-2018-06502 Aliases CVE-2018-8970GHSA-7gr4-mrjx-cjx9

The int_x509_param_set_hosts function in lib/libcrypto/x509/x509_vpm.c in LibreSSL 2.7.0…

Priority LOW 34CWE-295Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Spoofing
Confidentiality · integrity · availability
High · High · None
Fix status
No fix listed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-295.

Summary

The int_x509_param_set_hosts function in lib/libcrypto/x509/x509_vpm.c in LibreSSL 2.7.0 before 2.7.1 does not support a certain special case of a zero name length, which causes silent omission of hostname verification, and consequently allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate. NOTE: the LibreSSL documentation indicates that this special case is supported, but the BoringSSL documentation does not.

Why it matters now

EPSS 0.0102 63rd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:openbsd:libressl:2.7.0:*:*:*:*:*:*:*2.7.0VulnerableOpenBSD
  • cpe:2.3:a:openbsd:libressl:2.7.0:*:*:*:*:*:*:* Versions 2.7.0 Vulnerable ·OpenBSD

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-8970
  2. 2026-10-03 Alias added: GHSA-7gr4-mrjx-cjx9

References

Patch 1

Advisory 2

  • TI-2023-17874 A double free or use after free could occur after SSL_clear in OpenBSD 7.2 before errata… CVSS 3.1CRITICAL 9.8
  • TI-2021-21548 x509/x509_verify.c in LibreSSL before 3.4.2, and OpenBSD before 7.0 errata 006, allows… CVSS 3.1CRITICAL 9.8
  • TI-2015-04488 Out-of-bounds write in LibreSSL CVSS 3.1CRITICAL 9.8
  • TI-2015-04487 Uncontrolled resource consumption in LibreSSL CVSS 3.1HIGH 7.5
  • TI-2014-07651 Double free vulnerability in the ssl_parse_clienthello_use_srtp_ext function in d1_srtp.c… CVSS 2.0HIGH 7.5
  • TI-2019-15189 LibreSSL 2.9.1 through 3.2.1 has an out-of-bounds read in asn1_item_print_ctx (called from asn1_template_print_ctx). CVSS 3.1HIGH 7.1
See all 11 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences