漏洞描述
During key agreement in a TLS handshake using a DH(E) based ciphersuite a malicious server can send a very large prime value to the client. This will cause the client to spend an unreasonably long period of time generating a key for this prime resulting in a hang until the client has finished. This could be exploited in a Denial Of Service attack. Fixed in OpenSSL 1.1.0i-dev (Affected 1.1.0-1.1.0h). Fixed in OpenSSL 1.0.2p-dev (Affected 1.0.2-1.0.2o).
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
cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/pdf/ssa-419820.pdf↗www.openssl.orghttps://www.openssl.org/news/secadv/20180612.txt↗lists.debian.orghttps://lists.debian.org/debian-lts-announce/2018/07/msg00043.html↗security.netapp.comhttps://security.netapp.com/advisory/ntap-20190118-0002/↗access.redhat.comhttps://access.redhat.com/errata/RHSA-2019:1543↗access.redhat.comhttps://access.redhat.com/errata/RHSA-2018:3505↗git.openssl.orghttps://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=3984ef0b72831da8b3ece4745cac4f8575b19098↗www.oracle.comhttps://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html↗securityadvisories.paloaltonetworks.comhttps://securityadvisories.paloaltonetworks.com/Home/Detail/133↗access.redhat.comhttps://access.redhat.com/errata/RHSA-2018:2552↗www.oracle.comhttps://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html↗www.oracle.comhttps://www.oracle.com/security-alerts/cpujan2021.html↗access.redhat.comhttps://access.redhat.com/errata/RHSA-2018:3221↗www.oracle.comhttps://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html↗usn.ubuntu.comhttps://usn.ubuntu.com/3692-2/↗www.securityfocus.comhttp://www.securityfocus.com/bid/104442↗www.tenable.comhttps://www.tenable.com/security/tns-2018-17↗www.securitytracker.comhttp://www.securitytracker.com/id/1041090↗lists.fedoraproject.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZBEV5QGDRFUZDMNECFXUSN5FMYOZDE4V/↗usn.ubuntu.comhttps://usn.ubuntu.com/3692-1/↗www.tenable.comhttps://www.tenable.com/security/tns-2018-14↗www.tenable.comhttps://www.tenable.com/security/tns-2018-12↗www.oracle.comhttp://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html↗security.netapp.comhttps://security.netapp.com/advisory/ntap-20181105-0001/↗access.redhat.comhttps://access.redhat.com/errata/RHSA-2019:1297↗security.gentoo.orghttps://security.gentoo.org/glsa/201811-03↗www.debian.orghttps://www.debian.org/security/2018/dsa-4348↗www.oracle.comhttps://www.oracle.com/security-alerts/cpuapr2020.html↗lists.fedoraproject.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EWC42UXL5GHTU5G77VKBF6JYUUNGSHOM/↗www.oracle.comhttps://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html↗access.redhat.comhttps://access.redhat.com/errata/RHSA-2019:1296↗access.redhat.comhttps://access.redhat.com/errata/RHSA-2018:2553↗www.debian.orghttps://www.debian.org/security/2018/dsa-4355↗www.tenable.comhttps://www.tenable.com/security/tns-2018-13↗nodejs.orghttps://nodejs.org/en/blog/vulnerability/august-2018-security-releases/↗git.openssl.orghttps://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=ea7abeeabf92b7aca160bdd0208636d4da69f4f4↗lists.fedoraproject.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y3IVFGSERAZLNJCK35TEM2R4726XIH3Z/↗