Listen to this Post
How the CVE Works
The vulnerability exists in QQBot’s `/echo` command, which fails to sanitize platform-specific control tags like <qqbot-at-everyone />. Normally, regular users cannot use this tag to mention all group members (@全体成员), but the bot has elevated privileges to do so. By injecting the tag into the `/echo` command, an attacker forces the bot to broadcast an unauthorized mass mention. Since the bot echoes input without validation, the platform interprets the tag as a legitimate mention, bypassing user permission checks. This allows low-privileged users to abuse the bot’s privileges for spam or disruption.
DailyCVE Form
Platform: QQBot
Version:
Vulnerability: Privilege Escalation
Severity: Critical
Date: 2023-XX-XX
What Undercode Say:
Exploitation:
1. Manual Trigger:
curl -X POST "http://qqbot-api/chat" -d '{"command":"/echo <qqbot-at-everyone />"}'
2. Spam Script (Python):
import requests
for _ in range(10):
requests.post("http://qqbot-api/chat", json={"command":"/echo <qqbot-at-everyone />"})
Mitigation:
1. Input Sanitization:
def sanitize_input(cmd):
return cmd.replace("<qqbot-at-everyone />", "")
2. Patch Check:
grep -r "echo.<qqbot-at-everyone" /path/to/qqbot/code
3. Bot Permission Fix:
config.yml permissions: echo: allow_tags: false
Detection:
1. Log Analysis:
journalctl -u qqbot | grep "echo.@全体成员"
2. Network Monitoring:
tcpdump -i eth0 port 443 -A | grep "<qqbot-at-everyone />"
References:
- Patch: `git clone https://qqbot-patch/security/CVE-2023-XXXXX.git`
– Advisory: `https://nvd.nist.gov/vuln/detail/CVE-2023-XXXXX`
No further commentary.
Sources:
Reported By: github.com
Extra Source Hub:
Undercode
