Suexec:无效命令错误

Suexec:无效命令错误

我正在尝试使用 suexec 设置 lighttpd,但测试时出现问题:当我尝试通过 suexec 启动某些东西时,它会在日志中给出: [2017-10-08 00:23:24]: invalid command (/srv/http/main/htdocs/cgi-bin/test.py) 输出suexec -V

 -D AP_DOC_ROOT="/srv/http"
 -D AP_GID_MIN=100
 -D AP_HTTPD_USER="lighttpd"
 -D AP_LOG_EXEC="/var/log/lighttpd/suexec.log"
 -D AP_SAFE_PATH="/usr/local/bin:/usr/bin:/bin"
 -D AP_UID_MIN=100
 -D AP_USERDIR_SUFFIX="public_html"

我用来启动程序的包装器:

#!/bin/bash
filename="$1"
user="$(/usr/bin/stat -c "%U" "$filename")
group="$(/usr/bin/stat -c "%G" "$filename")

cd "$(dirname "$filename")"

/usr/local/bin/suexec "$user" "$group" "$filename"

权限没问题,没有设置恶意写入位。尝试从用户目录 ( /home/$USER/public_html) 和文档根目录进行操作。

答案1

似乎只允许相对路径;错误消息来自这个块:

/*
 * Check for a leading '/' (absolute path) in the command to be executed,
 * or attempts to back up out of the current directory,
 * to protect against attacks.  If any are
 * found, error out.  Naughty naughty crackers.
 */
if ((cmd[0] == '/') || (!strncmp(cmd, "../", 3))
    || (strstr(cmd, "/../") != NULL)) {
    log_err("invalid command (%s)\n", cmd);
    exit(104);
}

(看https://anonscm.debian.org/cgit/pkg-apache/apache2.git/tree/support/suexec.c?h=upstream/2.4.27#n350

相关内容