CVE-2018-8970

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Summary

CVECVE-2018-8970
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2018-03-24 21:29:00 UTC
Updated2018-04-24 16:40:00 UTC
DescriptionThe 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.

Risk And Classification

Problem Types: CWE-295

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Openbsd Libressl 2.7.0 All All All
Application Openbsd Libressl 2.7.0 All All All

References

ReferenceSourceLinkTags
Call strlen() if name length provided is 0, like OpenSSL does. · libressl-portable/openbsd@0654414 · GitHub MISC github.com Patch, Third Party Advisory
ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-2.7.1-relnotes.txt MISC ftp.openbsd.org Vendor Advisory
e759a9cd84198613199259dbed401f4951747cff - boringssl - Git at Google MISC boringssl.googlesource.com Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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