| Bug ID | 1086778 |
|---|---|
| Summary | VUL-0: CVE-2018-8970: libressl: The int_x509_param_set_hosts function in lib/libcrypto/x509/x509_vpm.c inLibreSSL 2.7.0 before 2.7.1 does not support a certain special case of a zeroname length, which causes silent omission of hostname verification |
| Classification | openSUSE |
| Product | openSUSE Distribution |
| Version | Leap 42.3 |
| Hardware | Other |
| URL | https://smash.suse.de/issue/202623/ |
| OS | Other |
| Status | NEW |
| Severity | Normal |
| Priority | P5 - None |
| Component | Basesystem |
| Assignee | jengelh@inai.de |
| Reporter | meissner@suse.com |
| QA Contact | security-team@suse.de |
| CC | security-team@suse.de |
| Found By | Security Response Team |
| Blocker | --- |
CVE-2018-8970 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. References: http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-8970 http://www.cvedetails.com/cve/CVE-2018-8970/ https://boringssl.googlesource.com/boringssl/+/e759a9cd84198613199259dbed401f4951747cff https://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-2.7.1-relnotes.txt https://github.com/libressl-portable/openbsd/commit/0654414afcce51a16d35d05060190a3ec4618d42