MediumPublic exploit

Remote Password Change in Cisco Secure ACS 5.1/5.2

IdentifiersCVE-2011-0951CWE-640

A vulnerability in the web-based management interface of Cisco Secure Access Control System (ACS) 5.1 (prior to 5.1.0.44.6) and 5.2 (prior to 5.2.0.26.3) allows remote, unauthenticated attackers to change the password of any user account in the internal identity store without knowledge of the previous password. The vulnerability does not affect accounts managed by external identity stores or system administrator accounts, and does not permit modification of other account attributes, access policies, or device properties. The issue is tracked as Cisco bug ID CSCtl77440.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation allows a remote, unauthenticated attacker to change the password of any user account in the internal identity store, potentially leading to unauthorized access to resources protected by Cisco Secure ACS. The attacker cannot modify other user attributes, access policies, or device properties. Accounts managed by external identity stores and system administrator accounts are not affected.

Mitigation

If you can’t patch tonight, do this now.

Restrict access to the web-based management interface to trusted networks and administrators. Disable the User Change Password (UCP) web service if not required. There is no direct workaround for the vulnerability aside from applying the recommended patches and limiting management interface exposure.

Remediation

Patch, then assume compromise.

Upgrade Cisco Secure ACS 5.1 to cumulative patch 6 (5.1.0.44.6) or later, or ACS 5.2 to cumulative patch 3 (5.2.0.26.3) or later. Follow Cisco's advisory for detailed patching instructions and version identification. No other Cisco products are affected.

PUBLIC EXPLOITS

Exploits

1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.

VALID 1 / 1 TOTALView more in app

cisco_secure_acs_bypass.rbMaturityWeaponizedFrameworkmetasploitVerified exploit

This repository contains a single Metasploit auxiliary module (modules/auxiliary/admin/networking/cisco_secure_acs_bypass.rb) that exploits an authentication bypass vulnerability (CVE-2011-0951) in Cisco Secure ACS versions 5.1 (patches 3, 4, 5) and 5.2 (no patches, patches 1, 2). The module sends a crafted SOAP request to the /PI/services/UCP/ endpoint, allowing an attacker to change the password of any user in the local store without authentication. The exploit is operational and can be used to gain unauthorized access to affected systems by resetting user credentials. The module is written in Ruby and is designed to be run within the Metasploit framework. The only network endpoint directly targeted is the UCP web service on the ACS server, typically accessed over HTTPS on port 443.

rubynetwork

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType

Cisco SystemsSecure Access Control Systemapplication

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

ACTIVITY FEED

Recent activity

No public activity tracked yet. Mallory keeps watching.

0 SOURCESView more in app

No public activity observed for this vulnerability.

What this page doesn’t show

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Exposure mapping

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Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

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Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity