# What is CVE-2018-3616? > CVE-2018-3616 is a medium-severity flaw (CVSS 5.9) in Converged Security Management Engine Firmware from Intel, published on 12 September 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 2.4%. If you run an affected version, plan in the vendor’s fix. Canonical page: https://www.precursorintelligence.com/what-is/cve-2018-3616 ## 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:** 28 out of 100 (Low); action: Monitor. Kept up to date as the evidence changes. - **Severity:** Medium (CVSS 5.9 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:** 2.4% (latest exploit-likelihood forecast) - **Published:** 12 September 2018 - **Record last updated:** 17 August 2023 - **Main product:** Converged Security Management Engine Firmware from Intel - **Affected products:** 25 ## What is CVE-2018-3616? In plain terms It can be attacked from anywhere on the internet without logging in, and nobody has to click anything. If it works, the attacker can read data. ### The official description Bleichenbacher-style side channel vulnerability in TLS implementation in Intel Active Management Technology before 12.0.5 may allow an unauthenticated user to potentially obtain the TLS session key via the network. ### What kind of flaw is it? - Unknown: Unknown ### 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: No login needed - Does someone have to click: No, nobody has to do anything - What an attacker gets: Can read data Severity vector: `CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N` ## Is CVE-2018-3616 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 2.4%. That can change at any time, which is why we keep watching. Exploit likelihood over the last 7 days: 2.4%, 2.4%, 2.4%, 2.4%, 2.4%, 2.4%, 2.4%. ### Timeline - 12 September 2018: Published - 17 August 2023: Record last updated ### How Precursor Intelligence ranks it CVE-2018-3616 scores **28 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: 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-2018-3616? The published record lists 25 products. Versions are as published: "11.0.0 to before 12.0.5" means from 11.0.0 up to, but not including, 12.0.5. - [Converged Security Management Engine Firmware](https://www.precursorintelligence.com/product/intel/converged_security_management_engine_firmware) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Application): 11.0.0 to before 12.0.5 - [Active Management Technology Firmware](https://www.precursorintelligence.com/product/intel/active_management_technology_firmware) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Operating system): before 12.0.5 - [Manageability Engine Firmware](https://www.precursorintelligence.com/product/intel/manageability_engine_firmware) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Operating system): 9.0.0.0 to before 11.0 - [Simatic Field Pg M5](https://www.precursorintelligence.com/product/siemens/simatic_field_pg_m5) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified - [Simatic Field Pg M5 Firmware](https://www.precursorintelligence.com/product/siemens/simatic_field_pg_m5_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 22.01.06 - [Simatic Ipc427e](https://www.precursorintelligence.com/product/siemens/simatic_ipc427e) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified - [Simatic Ipc427e Firmware](https://www.precursorintelligence.com/product/siemens/simatic_ipc427e_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 21.01.09 - [Simatic Ipc477e](https://www.precursorintelligence.com/product/siemens/simatic_ipc477e) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified - [Simatic Ipc477e Firmware](https://www.precursorintelligence.com/product/siemens/simatic_ipc477e_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 21.01.09 - [Simatic Ipc547e Firmware](https://www.precursorintelligence.com/product/siemens/simatic_ipc547e_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before r1.30.0 - [Simatic Ipc547g](https://www.precursorintelligence.com/product/siemens/simatic_ipc547g) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified - [Simatic Ipc627d](https://www.precursorintelligence.com/product/siemens/simatic_ipc627d) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified - [Simatic Ipc627d Firmware](https://www.precursorintelligence.com/product/siemens/simatic_ipc627d_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 19.02.11 - [Simatic Ipc647d](https://www.precursorintelligence.com/product/siemens/simatic_ipc647d) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified - [Simatic Ipc647d Firmware](https://www.precursorintelligence.com/product/siemens/simatic_ipc647d_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 19.01.14 - [Simatic Ipc677d](https://www.precursorintelligence.com/product/siemens/simatic_ipc677d) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified - [Simatic Ipc677d Firmware](https://www.precursorintelligence.com/product/siemens/simatic_ipc677d_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 19.02.11 - [Simatic Ipc827d](https://www.precursorintelligence.com/product/siemens/simatic_ipc827d) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified - [Simatic Ipc827d Firmware](https://www.precursorintelligence.com/product/siemens/simatic_ipc827d_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 19.02.11 - [Simatic Ipc847d](https://www.precursorintelligence.com/product/siemens/simatic_ipc847d) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified - [Simatic Ipc847d Firmware](https://www.precursorintelligence.com/product/siemens/simatic_ipc847d_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 19.01.14 - [Simatic Itp1000](https://www.precursorintelligence.com/product/siemens/simatic_itp1000) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified - [Simatic Itp1000 Firmware](https://www.precursorintelligence.com/product/siemens/simatic_itp1000_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before 23.01.04 - [Simatic Pc547e](https://www.precursorintelligence.com/product/siemens/simatic_pc547e) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified - [Simatic Pc547g Firmware](https://www.precursorintelligence.com/product/siemens/simatic_pc547g_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): before r1.23.0 ## How do I fix CVE-2018-3616? 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 advisories and patch notes 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 - [cert-portal.siemens.com](https://cert-portal.siemens.com/productcert/pdf/ssa-377318.pdf) (Patch, Third-party advisory) - [intel.com](https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00141.html) (Vendor advisory) - [securityfocus.com](http://www.securityfocus.com/bid/106996) (Third-party advisory, Vulnerability database) - [ics-cert.us-cert.gov](https://ics-cert.us-cert.gov/advisories/ICSA-19-043-05) (Third-party advisory, Government resource) - [security.netapp.com](https://security.netapp.com/advisory/ntap-20180924-0003/) (Third-party advisory) - [support.hpe.com](https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03876en_us) (Third-party advisory) ## Questions ### What is CVE-2018-3616? CVE-2018-3616 is a medium-severity flaw in Converged Security Management Engine Firmware from Intel, published on 12 September 2018. It can be attacked from anywhere on the internet without logging in, and nobody has to click anything. If it works, the attacker can read data. ### How serious is CVE-2018-3616? It scores 5.9 out of 10 on the CVSS severity scale, which is medium. Our risk score for CVE-2018-3616 is 28 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-2018-3616 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 2.4%. That can change at any time, which is why we keep watching. ### Which versions does CVE-2018-3616 affect? For Converged Security Management Engine Firmware from Intel: 11.0.0 to before 12.0.5. The record lists 25 products in all, each with its versions, under "Who is affected" on this page. ### How do I fix CVE-2018-3616? 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-2018-3616 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