CVE-2023-54403
Description
Yonyou U8 CRM before V16.5 and V18 contains an arbitrary file read vulnerability in /ajax/getemaildata.php that allows unauthenticated attackers to bypass authentication using the DontCheckLogin=1 parameter and read arbitrary files via an unvalidated filePath parameter. Attackers can exploit this flaw to read sensitive files outside the web application directory, including configuration files containing database or service credentials. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-10-14.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
Propose a mitigation on Community Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
References
- https://github.com/PeiQi0/PeiQi-WIKI-Book/blob/main/docs/wiki/oa/%E7%94%A8%E5%8F%8BOA/%E7%94%A8%E5%8F%8B%20U8%20CRM%E5%AE%A2%E6%88%B7%E5%85%B3%E7%B3%BB%E7%AE%A1%E7%90%86%E7%B3%BB%E7%BB%9F%20getemaildata.php%20%E4%BB%BB%E6%84%8F%E6%96%87%E4%BB%B6%E8%AF%BB%E5%8F%96%E6%BC%8F%E6%B4%9E.md
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/vulnerabilities/yonyou/yonyou-u8-crm-lfi.yaml
- https://security.yonyou.com/#/noticeInfo?id=624
- https://www.vulncheck.com/advisories/yonyou-u8-crm-arbitrary-file-read-via-getemaildata-php
- https://www.yonyou.com/Global/
CWEs
CWE-22
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.