Home Cyber Security News HP Device Manager Backdoor Could Allow Privilege Escalation To Remote Attackers

HP Device Manager Backdoor Could Allow Privilege Escalation To Remote Attackers

by Abeerah Hashim
HP Device Manager backdoor

HP Device Manager Backdoor

Security researcher Nicky Bloor found a backdoor in HP Device Manager. The product allows IT admins to manage HP Thin Client devices.

However, due to the backdoor account, a remote unauthorized attacker could gain elevated privileges on target systems. When coupled with other vulnerabilities, the adversary could even run remote commands with SYSTEM privileges.

Describing details about the backdoor to The Register, the researcher said,

This was a privileged user account with a password consisting of a single space character. The only reference to the user account was in a database log file included with the HP Device Manager software where log entries can be seen dating before I even installed the software…
Anyone with access to a server where HP Device Manager is installed could use this user account to gain complete control over the server.

Bloor also found some more vulnerabilities in the default configuration of the HP Device Manager (HPDM). Thus, it became possible for a remote attacker to connect to and control a server running HPDM with admin access.

HP Deployed A Fix… Lately

Upon discovering the vulnerability back in August 2020, Bloor reached out to HP who, according to him, remained unresponsive initially. Then, when the researcher expressed his intention to disclose the bug within 30 days, HP responded with a request for a 90-day disclosure period.

This compelled the researcher to disclose the bug publicly to protect the users in general. He also shared a potential fix in a series of tweets.

Shortly after the disclosure, HP deployed the fix while assigning multiple CVEs to Bloor’s discovered bugs. As described in their advisory,

Potential vulnerabilities have been identified with certain versions of HP Device Manager. These vulnerabilities may allow locally managed accounts within HP Device Manager to be susceptible to dictionary attacks due to weak cipher implementation (CVE-2020-6925) and allow a malicious actor to remotely gain unauthorized access to resources (CVE-2020-6926), and/or allow a malicious actor to gain SYSTEM privileges (CVE-2020-6927).

The bugs CVE-2020-6925 and CVE-2020-6926 affected all versions of HPDM. Whereas, CVE-2020-6927 only affected HP Device Manager 5.0.0, 5.0.1, 5.0.2, and 5.0.3.

The vendors have released fixes with HP Device Manager 5.0.4. Whereas, they will also release fixes with HP Device Manager 4.7 Service Pack 13.

You may also like

Latest Hacking News

Privacy Preference Center

Necessary

The __cfduid cookie is used to identify individual clients behind a shared IP address and apply security settings on a per-client basis.

cookie_notice_accepted and gdpr[allowed_cookies] are used to identify the choices made from the user regarding cookie consent.

For example, if a visitor is in a coffee shop where there may be several infected machines, but the specific visitor's machine is trusted (for example, because they completed a challenge within your Challenge Passage period), the cookie allows Cloudflare to identify that client and not challenge them again. It does not correspond to any user ID in your web application, and does not store any personally identifiable information.

__cfduid, cookie_notice_accepted, gdpr[allowed_cookies]

Advertising

DoubleClick by Google refers to the DoubleClick Digital Marketing platform which is a separate division within Google. This is Google’s most advanced advertising tools set, which includes five interconnected platform components.

DoubleClick Campaign Manager: the ad-serving platform, called an Ad Server, that delivers ads to your customers and measures all online advertising, even across screens and channels.

DoubleClick Bid Manager – the programmatic bidding platform for bidding on high-quality ad inventory from more than 47 ad marketplaces including Google Display Network.

DoubleClick Ad Exchange: the world’s largest ad marketplace for purchasing display, video, mobile, Search and even Facebook inventory.

DoubleClick Search: is more powerful than AdWords and used for purchasing search ads across Google, Yahoo, and Bing.

DoubleClick Creative Solutions: for designing, delivering and measuring rich media (video) ads, interactive and expandable ads.

doubleclick

Analytics

The _ga is asssociated with Google Universal Analytics - which is a significant update to Google's more commonly used analytics service. This cookie is used to distinguish unique users by assigning a randomly generated number as a client identifier. It is included in each page request in a site and used to calculate visitor, session and campaign data for the sites analytics reports. By default it is set to expire after 2 years, although this is customisable by website owners.

The _gat global object is used to create and retrieve tracker objects, from which all other methods are invoked. Therefore the methods in this list should be run only off a tracker object created using the _gat global variable. All other methods should be called using the _gaq global object for asynchronous tracking.

_gid works as a user navigates between web pages, they can use the gtag.js tagging library to record information about the page the user has seen (for example, the page's URL) in Google Analytics. The gtag.js tagging library uses HTTP Cookies to "remember" the user's previous interactions with the web pages.

_ga, _gat, _gid