Nginx UI: Unauthenticated Backup Download with Encryption Key Disclosure
90Vexday Risk Score
Patch now. It exploitation observed by VulnCheck and has a working public exploit.
ssvc Actcvss 9.8epss 22%
from disclosure to weapon5 days
Published on NVDMar 5
1st PoC+5d
VulnCheck+14d
exploitation probability
22%top 3% of all CVEs
observed exploitation
yesVulnCheck
4 public exploit(s)
Nginx UI is a web user interface for the Nginx web server. Prior to version 2.3.3, the /api/backup endpoint is accessible without authentication and discloses the encryption keys required to decrypt the backup in the X-Backup-Security response header. This allows an unauthenticated attacker to download a full system backup containing sensitive data (user credentials, session tokens, SSL private keys, Nginx configurations) and decrypt it immediately. This issue has been patched in version 2.3.3.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
0xJacky · nginx-uipublic PoCs found — 4
githubgithub.com/karimelsheikh1/HTB-Snapped-Writeup★ 1vulncheckvulncheck.com/xdb/5d280ba688b1unverifiedvulncheckvulncheck.com/xdb/7519448d143bunverifiedvulncheckvulncheck.com/xdb/d99c12fc9ddfunverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.