Vulnerability Information
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Vulnerability Title
N/A
Vulnerability Description
fcronsighup in Fcron 2.0.1, 2.9.4, and possibly earlier versions allows local users to bypass access restrictions and load an arbitrary configuration file by starting an suid process and pointing the fcronsighup configuration file to a /proc entry that is owned by root but modifiable by the user, such as /proc/self/cmdline or /proc/self/environ.
CVSS Information
N/A
Vulnerability Type
N/A
Vulnerability Title
Fcron 配置绕过漏洞
Vulnerability Description
Fcron是一款命令执行调度程序，可代替Vixie Cron使用。 Fcron包含的fcronsighup程序存在设计问题，本地攻击者可以利用这个漏洞绕过访问限制。 fcronsighup是setuid root属性程序，问题存在于fcronsighup对配置文件处理检查上，程序会对文件属主是否为ROOT或者其他用户不可写进行检查。 当普通用户运行setuid进程时，关联它的/proc文件系统属主为ROOT，并且"cmdline"和 "evironment"文件的内容由用户空子后，通过指向fcronsig
CVSS Information
N/A
Vulnerability Type
N/A