# What is CVE-2011-2054? > CVE-2011-2054 is a high-severity flaw (CVSS 7.5) in ASA 5500 Firmware from Cisco, published on 19 February 2020. It is not on the list of flaws known to be exploited today. The latest forecast puts its chance of use in the next 30 days at 0.9%. If you run an affected version, plan in the vendor’s fix. Canonical page: https://www.precursorintelligence.com/what-is/cve-2011-2054 ## At a glance - **Verdict:** Plan it in. No sign of exploitation and a low forecast. Patch it in your normal update cycle. - **Precursor Intelligence risk score:** 46 out of 100 (Medium); action: Plan remediation. Kept up to date as the evidence changes. - **Severity:** High (CVSS 7.5 out of 10) - **Known to be exploited:** No, not on the list of flaws known to be exploited today - **Chance of use in the next 30 days:** 0.9% (latest exploit-likelihood forecast) - **Published:** 19 February 2020 - **Record last updated:** 24 February 2020 - **Main product:** ASA 5500 Firmware from Cisco - **Affected products:** 24 ## What is CVE-2011-2054? In plain terms It can be attacked from anywhere on the internet with an ordinary user account, and nobody has to click anything. If it works, the attacker can read data, change data and take it offline. ### The official description A vulnerability in the Cisco ASA that could allow a remote attacker to successfully authenticate using the Cisco AnyConnect VPN client if the Secondary Authentication type is LDAP and the password is left blank, providing the primary credentials are correct. The vulnerabilities is due to improper input validation of certain parameters passed to the affected software. An attacker must have the correct primary credentials in order to successfully exploit this vulnerability. ### What kind of flaw is it? - CWE-287: Improper Authentication ### How an attack on it works - Where an attacker can be: Anywhere on the internet - How hard it is to pull off: Hard: conditions must line up - Login needed first: An ordinary user account - Does someone have to click: No, nobody has to do anything - What an attacker gets: Can read data, change data and take it offline Severity vector: `CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H` ## Is CVE-2011-2054 being exploited? Not that we know of It is not on the list of flaws known to be exploited today. The latest forecast puts the chance of it being used in the next 30 days at 0.9%. That can change at any time, which is why we keep watching. Exploit likelihood over the last 7 days: 0.9%, 0.9%, 0.9%, 0.9%, 0.9%, 0.9%, 0.9%. ### Timeline - 19 February 2020: Published - 24 February 2020: Record last updated ### How Precursor Intelligence ranks it CVE-2011-2054 scores **46 out of 100 (Medium)**, with the action "Plan remediation". Every published flaw gets a risk score from 0 to 100, kept up to date as the evidence changes. Four things go into the score, from the one that counts most to the ones that count less: - Evidence it is being exploited: biggest factor - How severe it is: strong factor - How widely exposed it is: smaller factor - Threat activity around it: smaller factor 85 and above is Critical. Anything confirmed as exploited is always marked for an emergency patch, whatever its score. When this flaw matches software you track, it lands in your list with its score and the reasons behind it. ## Who is affected by CVE-2011-2054? The published record lists 24 products. - [ASA 5500 Firmware](https://www.precursorintelligence.com/product/cisco/asa_5500_firmware) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Operating system): 8.4(1) - [ASA 5500](https://www.precursorintelligence.com/product/cisco/asa_5500) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [ASA 5510](https://www.precursorintelligence.com/product/cisco/asa_5510) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [ASA 5510 Firmware](https://www.precursorintelligence.com/product/cisco/asa_5510_firmware) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Operating system): 8.4(1) - [ASA 5512-X](https://www.precursorintelligence.com/product/cisco/asa_5512-x) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [ASA 5512-X Firmware](https://www.precursorintelligence.com/product/cisco/asa_5512-x_firmware) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Operating system): 8.4(1) - [ASA 5515-X](https://www.precursorintelligence.com/product/cisco/asa_5515-x) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [ASA 5515-X Firmware](https://www.precursorintelligence.com/product/cisco/asa_5515-x_firmware) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Operating system): 8.4(1) - [ASA 5520](https://www.precursorintelligence.com/product/cisco/asa_5520) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [ASA 5520 Firmware](https://www.precursorintelligence.com/product/cisco/asa_5520_firmware) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Operating system): 8.4(1) - [ASA 5525-X](https://www.precursorintelligence.com/product/cisco/asa_5525-x) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [ASA 5525-X Firmware](https://www.precursorintelligence.com/product/cisco/asa_5525-x_firmware) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Operating system): 8.4(1) - [ASA 5540](https://www.precursorintelligence.com/product/cisco/asa_5540) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [ASA 5540 Firmware](https://www.precursorintelligence.com/product/cisco/asa_5540_firmware) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Operating system): 8.4(1) - [ASA 5545-X](https://www.precursorintelligence.com/product/cisco/asa_5545-x) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [ASA 5545-X Firmware](https://www.precursorintelligence.com/product/cisco/asa_5545-x_firmware) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Operating system): 8.4(1) - [ASA 5550](https://www.precursorintelligence.com/product/cisco/asa_5550) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [ASA 5550 Firmware](https://www.precursorintelligence.com/product/cisco/asa_5550_firmware) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Operating system): 8.4(1) - [ASA 5555-X](https://www.precursorintelligence.com/product/cisco/asa_5555-x) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [ASA 5555-X Firmware](https://www.precursorintelligence.com/product/cisco/asa_5555-x_firmware) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Operating system): 8.4(1) - [ASA 5580](https://www.precursorintelligence.com/product/cisco/asa_5580) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [ASA 5580 Firmware](https://www.precursorintelligence.com/product/cisco/asa_5580_firmware) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Operating system): 8.4(1) - [ASA 5585-X](https://www.precursorintelligence.com/product/cisco/asa_5585-x) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [ASA 5585-X Firmware](https://www.precursorintelligence.com/product/cisco/asa_5585-x_firmware) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Operating system): 8.4(1) ## How do I fix CVE-2011-2054? 1. **Check whether you run it.** Compare your versions with the affected products above. Not sure what you run? Precursor Intelligence can work it out from your public website, or you can pick it from a list. 2. **Apply the vendor’s fix.** Install the update named in the vendor’s advisory. We’ve put the advisory first in the list. 3. **If you can’t patch today.** Follow any mitigation the vendor publishes, and limit who can reach the affected system from the internet until the update is in. 4. **Keep an eye on it.** Track the product and we tell you as soon as we spot this flaw on the list of exploited flaws, or a jump in its exploit likelihood. ### References - [quickview.cloudapps.cisco.com](https://quickview.cloudapps.cisco.com/quickview/bug/CSCtq58884) (Vendor advisory) ## Questions ### What is CVE-2011-2054? CVE-2011-2054 is a high-severity flaw in ASA 5500 Firmware from Cisco, published on 19 February 2020. It can be attacked from anywhere on the internet with an ordinary user account, and nobody has to click anything. If it works, the attacker can read data, change data and take it offline. ### How serious is CVE-2011-2054? It scores 7.5 out of 10 on the CVSS severity scale, which is high. Our risk score for CVE-2011-2054 is 46 out of 100, which is Medium. Its action is "Plan remediation". No sign of exploitation and a low forecast. Patch it in your normal update cycle. ### Is CVE-2011-2054 being exploited? It is not on the list of flaws known to be exploited today. The latest forecast puts the chance of it being used in the next 30 days at 0.9%. That can change at any time, which is why we keep watching. ### Which versions does CVE-2011-2054 affect? For ASA 5500 Firmware from Cisco: 8.4(1). The record lists 24 products in all, each with its versions, under "Who is affected" on this page. ### How do I fix CVE-2011-2054? Install the update the vendor names in its advisory, linked first under "How do I fix" on this page. If you can't patch today, follow the vendor's mitigation and limit who can reach the affected system from the internet. ## Does CVE-2011-2054 affect you? Precursor Intelligence keeps checking for you: - **Tell us what you run.** Pick your software from a list, or let us work it out from your website. - **We match it to every flaw.** Over 400,000 published flaws, checked against your list. - **Ranked by real-world risk.** Every flaw gets a 0 to 100 risk score, kept up to date, led by evidence criminals are using it. - **Told as soon as we know.** An alert by email, in the app or by webhook to your own tools. Start free (no card, nothing to install): https://www.precursorintelligence.com/register Book a demo: https://www.precursorintelligence.com/contact