Privilege Escalation Flaw in Cisco ASA Allows Attackers To Read or Write Files in the System

A Privilege Escalation vulnerability discovered in Cisco ASA allows an lowest privilege user to overwrite the system’s firmware, full configuration file, and to create new users.

The vulnerability was identified by Tenable, tracked as CVE-2018-15465, allows a remote attacker to perform privileged actions in the web interface.

To exploit this vulnerability the attacker “requires the HTTP interface for IOS to be enabled, and the “aaa” authentication scheme needs to be set, which is not part of the ASAv default configuration.”

The vulnerability is due to the improper validation of user management in the webmanagement, an attacker could exploit this vulnerability by sending a crafted HTTP requests through HTTPS to the affected as an unprivileged user.

An attacker could exploit the vulnerability to retrive files from the device or to upload and replace software images on the device.

The vulnerability affects all the Cisco ASA Software running with web management access enabled.

Now Cisco has released an advisory and patches, enabling command authorization prevents the exploitation of this vulnerability.

Cisco recommends “Administrators who use the Adaptive Security Device Manager (ASDM) to manage the ASA are advised to enable command authorization by using the ASDM because doing so will allow the ASDM to push predefined command sets for different privilege to the ASA.”

Related Read

Cisco Releases Security Updates that Covers 16 Vulnerabilities that had Critical and High Impact

Cisco Released Security Updates for Multiple Vulnerabilities that Affected Cisco Products

Cisco Released Critical Security Updates for Vulnerabilities that Affected Cisco Products

Gurubaran

Gurubaran is a co-founder of Cyber Security News and GBHackers On Security. He has 10+ years of experience as a Security Consultant, Editor, and Analyst in cybersecurity, technology, and communications.

Recent Posts

Ivanti Fully Patched Connect Secure RCE Vulnerability That Actively Exploited in the Wild

Ivanti has issued an urgent security advisory for CVE-2025-22457, a critical vulnerability impacting Ivanti Connect…

1 day ago

Beware! Weaponized Job Recruitment Emails Spreading BeaverTail and Tropidoor Malware

A concerning malware campaign was disclosed by the AhnLab Security Intelligence Center (ASEC), revealing how…

1 day ago

EncryptHub Ransomware Uncovered Through ChatGPT Use and OPSEC Failures

EncryptHub, a rapidly evolving cybercriminal entity, has come under intense scrutiny following revelations of operational…

1 day ago

PoisonSeed Targets CRM and Bulk Email Providers in New Supply Chain Phishing Attack

A sophisticated phishing campaign, dubbed "PoisonSeed," has been identified targeting customer relationship management (CRM) and…

1 day ago

Beware! Fake Unpaid Tolls Messages Used in Phishing Attack to Steal Login Credentials

A surge in phishing text messages claiming unpaid tolls has been linked to a massive…

1 day ago

State Bar of Texas Confirms Data Breach, Begins Notifying Affected Consumers

The State Bar of Texas has confirmed a data breach following the detection of unauthorized…

1 day ago