# What is CVE-2018-11567? > CVE-2018-11567 is a low-severity flaw (CVSS 3.3) in Echo from Amazon, published on 30 May 2018. 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 1.1%. If you run an affected version, plan in the vendor’s fix. Canonical page: https://www.edgeprotect.io/what-is/cve-2018-11567 ## At a glance - **Verdict:** Plan it in. No sign of exploitation and a low forecast. Patch it in your normal update cycle. - **EdgeProtect risk score:** 35 out of 100 (Low); action: Monitor. Kept up to date as the evidence changes. - **Severity:** Low (CVSS 3.3 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:** 1.1% (latest exploit-likelihood forecast) - **Published:** 30 May 2018 - **Record last updated:** 5 August 2024 - **Main product:** Echo from Amazon - **Affected products:** 10 ## What is CVE-2018-11567? In plain terms An attacker has to be already on the device without logging in, but a person has to take an action first. If it works, the attacker can read some data. ### The official description Prior to 2018-04-27, the reprompt feature in Amazon Echo devices could be misused by a custom Alexa skill. The reprompt feature is designed so that if Alexa does not receive an input within 8 seconds, the device can speak a reprompt, then wait an additional 8 seconds for input; if the user still does not respond, the microphone is then turned off. The vulnerability involves empty output-speech reprompts, custom wildcard ("gibberish") input slots, and logging of detected speech. If a maliciously designed skill is installed, an attacker could obtain transcripts of speech not intended for Alexa to process, but simply spoken within the device's hearing range. NOTE: The vendor states "Customer trust is important to us and we take security and privacy seriously. We have put mitigations in place for detecting this type of skill behavior and reject or suppress those skills when we do. Customers do not need to take any action for these mitigations to work. ### What kind of flaw is it? - CWE-384: Session Fixation ### How an attack on it works - Where an attacker can be: Already on the device - How hard it is to pull off: Easy: no special conditions - Login needed first: No login needed - Does someone have to click: Yes, a person has to take an action - What an attacker gets: Can read some data Severity vector: `CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N` ## Is CVE-2018-11567 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 1.1%. That can change at any time, which is why we keep watching. Exploit likelihood over the last 7 days: 1.1%, 1.1%, 1.1%, 1.1%, 1.1%, 1.1%, 1.1%. ### Timeline - 30 May 2018: Published - 5 August 2024: Record last updated ### How EdgeProtect ranks it CVE-2018-11567 scores **35 out of 100 (Low)**, with the action "Monitor". 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: key context - Real threat activity around it: key context 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-2018-11567? The published record lists 10 products. Versions are as published: "before 2018-04-27" means every version up to, but not including, 2018-04-27. - [Echo](https://www.edgeprotect.io/product/amazon/echo) by [Amazon](https://www.edgeprotect.io/vendors/amazon) (Hardware): version not specified - [Echo Dot](https://www.edgeprotect.io/product/amazon/echo_dot) by [Amazon](https://www.edgeprotect.io/vendors/amazon) (Hardware): version not specified - [Echo Dot Firmware](https://www.edgeprotect.io/product/amazon/echo_dot_firmware) by [Amazon](https://www.edgeprotect.io/vendors/amazon) (Operating system): before 2018-04-27 - [Echo Firmware](https://www.edgeprotect.io/product/amazon/echo_firmware) by [Amazon](https://www.edgeprotect.io/vendors/amazon) (Operating system): before 2018-04-27 - [Echo Plus](https://www.edgeprotect.io/product/amazon/echo_plus) by [Amazon](https://www.edgeprotect.io/vendors/amazon) (Hardware): version not specified - [Echo Plus Firmware](https://www.edgeprotect.io/product/amazon/echo_plus_firmware) by [Amazon](https://www.edgeprotect.io/vendors/amazon) (Operating system): before 2018-04-27 - [Echo Show](https://www.edgeprotect.io/product/amazon/echo_show) by [Amazon](https://www.edgeprotect.io/vendors/amazon) (Hardware): version not specified - [Echo Show Firmware](https://www.edgeprotect.io/product/amazon/echo_show_firmware) by [Amazon](https://www.edgeprotect.io/vendors/amazon) (Operating system): before 2018-04-27 - [Echo Spot](https://www.edgeprotect.io/product/amazon/echo_spot) by [Amazon](https://www.edgeprotect.io/vendors/amazon) (Hardware): version not specified - [Echo Spot Firmware](https://www.edgeprotect.io/product/amazon/echo_spot_firmware) by [Amazon](https://www.edgeprotect.io/vendors/amazon) (Operating system): before 2018-04-27 ## How do I fix CVE-2018-11567? 1. **Check whether you run it.** Compare your versions with the affected products above. Not sure what you run? EdgeProtect can work it out from your public website, or you can pick it from a list. 2. **Apply the vendor’s fix.** Install the latest update from the vendor. The references list where the vendor has published details. 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 - [info.checkmarx.com](https://info.checkmarx.com/hubfs/Amazon_Echo_Research.pdf) (Exploit, Third-party advisory) - [checkmarx.com](https://www.checkmarx.com/2018/04/25/eavesdropping-with-amazon-alexa/) (Third-party advisory) - [wired.com](https://www.wired.com/story/amazon-echo-alexa-skill-spying/) (Press/media coverage, Third-party advisory) - [yahoo.com](https://www.yahoo.com/news/amazon-alexa-bug-let-hackers-104609600.html) (Press/media coverage, Third-party advisory) ## Questions ### What is CVE-2018-11567? CVE-2018-11567 is a low-severity flaw in Echo from Amazon, published on 30 May 2018. An attacker has to be already on the device without logging in, but a person has to take an action first. If it works, the attacker can read some data. ### How serious is CVE-2018-11567? It scores 3.3 out of 10 on the CVSS severity scale, which is low. Our risk score for CVE-2018-11567 is 35 out of 100, which is Low. Its action is "Monitor". No sign of exploitation and a low forecast. Patch it in your normal update cycle. ### Is CVE-2018-11567 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 1.1%. That can change at any time, which is why we keep watching. ### Which versions does CVE-2018-11567 affect? For Echo from Amazon: version not specified. The record lists 10 products in all, each with its versions, under "Who is affected" on this page. ### How do I fix CVE-2018-11567? Install the update the vendor names in its advisory. If you can't patch today, follow the vendor's mitigation and limit who can reach the affected system from the internet. ## Does CVE-2018-11567 affect you? EdgeProtect 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.edgeprotect.io/register Book a demo: https://www.edgeprotect.io/contact