漏洞描述
The X509_verify_cert function in crypto/x509/x509_vfy.c in OpenSSL 1.0.1n, 1.0.1o, 1.0.2b, and 1.0.2c does not properly process X.509 Basic Constraints cA values during identification of alternative certificate chains, which allows remote attackers to spoof a Certification Authority role and trigger unintended certificate verifications via a valid leaf certificate.
影响产品
修复建议
建议关注厂商安全公告，及时升级至已修复版本，并结合实际资产暴露情况采取缓解措施。
参考链接
www.freebsd.orghttps://www.freebsd.org/security/advisories/FreeBSD-SA-15:12.openssl.asc↗www.oracle.comhttp://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html↗fortiguard.comhttp://fortiguard.com/advisory/2015-07-09-cve-2015-1793-openssl-alternative-chains-certificate-forgery↗www.securityfocus.comhttp://www.securityfocus.com/bid/75652↗www.securityfocus.comhttp://www.securityfocus.com/bid/91787↗h20564.www2.hpe.comhttps://h20564.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04822825↗lists.fedoraproject.orghttp://lists.fedoraproject.org/pipermail/package-announce/2015-July/161782.html↗lists.fedoraproject.orghttp://lists.fedoraproject.org/pipermail/package-announce/2015-July/161747.html↗h20566.www2.hpe.comhttps://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05045763↗kb.juniper.nethttp://kb.juniper.net/InfoCenter/index?page=content&id=JSA10694↗git.openssl.orghttps://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=9a0db453ba017ebcaccbee933ee6511a9ae4d1c8↗www.oracle.comhttp://www.oracle.com/technetwork/topics/security/cpuoct2015-2367953.html↗www.oracle.comhttp://www.oracle.com/technetwork/topics/security/bulletinjul2015-2511963.html↗help.ecostruxureit.comhttps://help.ecostruxureit.com/display/public/UADCO8x/StruxureWare+Data+Center+Operation+Software+Vulnerability+Fixes↗www.fortiguard.comhttp://www.fortiguard.com/advisory/2015-07-09-cve-2015-1793-openssl-alternative-chains-certificate-forgery↗ftp.netbsd.orghttp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2015-008.txt.asc↗tools.cisco.comhttp://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150710-openssl↗kc.mcafee.comhttps://kc.mcafee.com/corporate/index?page=content&id=SB10125↗www.slackware.comhttp://www.slackware.com/security/viewer.php?l=slackware-security&y=2015&m=slackware-security.561427↗www1.huawei.comhttp://www1.huawei.com/en/security/psirt/security-bulletins/security-advisories/hw-454058.htm↗marc.infohttp://marc.info/?l=bugtraq&m=143880121627664&w=2↗marc.infohttp://marc.info/?l=bugtraq&m=144370846326989&w=2↗h20566.www2.hpe.comhttps://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05184351↗www.oracle.comhttp://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html↗www.securitytracker.comhttp://www.securitytracker.com/id/1032817↗www.oracle.comhttp://www.oracle.com/technetwork/security-advisory/cpuapr2016v3-2985753.html↗www.oracle.comhttp://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html↗openssl.orghttp://openssl.org/news/secadv_20150709.txt↗www.oracle.comhttp://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html↗security.gentoo.orghttps://security.gentoo.org/glsa/201507-15↗