VulnerabilityDeferred
CVE-2021-4463
Longjing Technology BEMS API versions up to and including 1.21 contains an unauthenticated arbitrary file download vulnerability in the 'downloads' endpoint.
HIGH 8.7EPSS 1.45%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.45%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Longjing Technology BEMS API versions up to and including 1.21 contains an unauthenticated arbitrary file download vulnerability in the 'downloads' endpoint. The 'fileName' parameter is not properly sanitized, allowing attackers to craft traversal sequences and access sensitive files outside the intended directory.
- CVSS 4.0
- 8.7 HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 1.45% probability · 72th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-22, CWE-552
- Source
- disclosure@vulncheck.com
References
- https://cxsecurity.com/issue/WLB-2021070173
- https://exchange.xforce.ibmcloud.com/vulnerabilities/206477
- https://packetstormsecurity.com/files/163702
- https://web.archive.org/web/20220527162453/http://www.ljkj2012.com/
- https://www.exploit-db.com/exploits/50163
- https://www.vulncheck.com/advisories/longjing-technology-bems-api-remote-arbitrary-file-download
- https://www.zeroscience.mk/en/vulnerabilities/ZSL-2021-5657.php
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.