漏洞描述
An issue was discovered in Zimbra Collaboration (ZCS) 8.8.15 and 9.0. An attacker can upload arbitrary files through amavis via a cpio loophole (extraction to /opt/zimbra/jetty/webapps/zimbra/public) that can lead to incorrect access to any other user accounts. Zimbra recommends pax over cpio. Also, pax is in the prerequisites of Zimbra on Ubuntu; however, pax is no longer part of a default Red Hat installation after RHEL 6 (or CentOS 6). Once pax is installed, amavis automatically prefers it over cpio.
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
forums.zimbra.orghttps://forums.zimbra.org/viewtopic.php?t=71153&p=306532↗wiki.zimbra.comhttps://wiki.zimbra.com/wiki/Security_Center↗wiki.zimbra.comhttps://wiki.zimbra.com/wiki/Zimbra_Security_Advisories↗packetstormsecurity.comhttp://packetstormsecurity.com/files/169458/Zimbra-Collaboration-Suite-TAR-Path-Traversal.html↗