CVE-2013-10053

published 2025-08-01

CVE-2013-10053: A remote command execution vulnerability exists in ZPanel version 10.0.0.2 in its htpasswd module. When creating .htaccess files, the inHTUsername field is…

Priority P2 64 high 8.7 CVSS 4.0

AV N AC L AT N PR L UI N VC H VI H VA H 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 MVI X MVA X MSC X MSI X MSA X S X AU X R X V X RE X U X

EXPLOIT

A remote command execution vulnerability exists in ZPanel version 10.0.0.2 in its htpasswd module. When creating .htaccess files, the inHTUsername field is passed unsanitized to a system() call that invokes the system’s htpasswd binary. By injecting shell metacharacters into the username field, an authenticated attacker can execute arbitrary system commands. Exploitation requires a valid ZPanel account—such as one in the default Users, Resellers, or Administrators groups—but no elevated privileges.

Affected

1 ranges

Vendor	Product	Version range	Fixed in
zpanel_project	zpanel	<= 10.0.0.2	—

Detection & IOCs extracted from sources · hover to see the quote

version ZPanel 10.0.0.2↗

command system() call invoking htpasswd binary with unsanitized inHTUsername field↗

• → Monitor HTTP POST requests to ZPanel's htpasswd module endpoint for shell metacharacters (e.g., ;, |, &&, $(), backticks) in the inHTUsername parameter field. ↗
• → Alert on ZPanel web process spawning unexpected child processes (e.g., /bin/sh, bash, curl, wget) as a result of the htpasswd system() call being abused. ↗
• → Flag authenticated sessions from low-privilege ZPanel accounts (Users/Resellers/Administrators) that interact with the htpasswd/.htaccess creation functionality, as exploitation only requires a valid account in any default group. ↗
• → The default 'zadmin' account is a known target/source for exploitation attempts; monitor for login activity or .htaccess creation actions under this account. ↗

• · Exploitation requires a valid authenticated ZPanel account; unauthenticated exploitation is not possible. Any account in the default groups is sufficient — no admin privileges needed. ↗
• · The 'zadmin' default account exists on all ZPanel 10.0.0.2 installations but uses a randomly generated password, so it cannot be assumed to be a trivial entry point without credential access. ↗

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