# What is CVE-2022-25368? > CVE-2022-25368 is a medium-severity flaw (CVSS 4.7) in Ampere Altra Max Firmware from Amperecomputing, published on 10 March 2022. 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 0.3%. If you run an affected version, plan in the vendor’s fix. Canonical page: https://www.precursorintelligence.com/what-is/cve-2022-25368 ## 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:** 13 out of 100 (Info); action: Track. Kept up to date as the evidence changes. - **Severity:** Medium (CVSS 4.7 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:** 0.3% (latest exploit-likelihood forecast) - **Published:** 10 March 2022 - **Record last updated:** 16 March 2022 - **Main product:** Ampere Altra Max Firmware from Amperecomputing - **Affected products:** 44 ## What is CVE-2022-25368? In plain terms An attacker has to be already on the device with an ordinary user account, and nobody has to click anything. If it works, the attacker can read data. ### The official description Spectre BHB is a variant of Spectre-v2 in which malicious code uses the shared branch history (stored in the CPU BHB) to influence mispredicted branches in the victim's hardware context. Speculation caused by these mispredicted branches can then potentially be used to cause cache allocation, which can then be used to infer information that should be protected. ### What kind of flaw is it? - Unknown: Unknown ### How an attack on it works - Where an attacker can be: Already on the device - 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 Severity vector: `CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N` ## Is CVE-2022-25368 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 0.3%. That can change at any time, which is why we keep watching. Exploit likelihood over the last 7 days: 0.3%, 0.3%, 0.3%, 0.3%, 0.3%, 0.3%, 0.3%. ### Timeline - 10 March 2022: Published - 16 March 2022: Record last updated ### How Precursor Intelligence ranks it CVE-2022-25368 scores **13 out of 100 (Info)**, with the action "Track". 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-2022-25368? The published record lists 44 products. - [Ampere Altra Max Firmware](https://www.precursorintelligence.com/product/amperecomputing/ampere_altra_max_firmware) by [Amperecomputing](https://www.precursorintelligence.com/vendors/amperecomputing) (Operating system): version not specified - [Ampere Altra](https://www.precursorintelligence.com/product/amperecomputing/ampere_altra) by [Amperecomputing](https://www.precursorintelligence.com/vendors/amperecomputing) (Hardware): version not specified - [Ampere Altra Firmware](https://www.precursorintelligence.com/product/amperecomputing/ampere_altra_firmware) by [Amperecomputing](https://www.precursorintelligence.com/vendors/amperecomputing) (Operating system): version not specified - [Ampere Altra Max](https://www.precursorintelligence.com/product/amperecomputing/ampere_altra_max) by [Amperecomputing](https://www.precursorintelligence.com/vendors/amperecomputing) (Hardware): version not specified - [Cortex-A15](https://www.precursorintelligence.com/product/arm/cortex-a15) by [Arm](https://www.precursorintelligence.com/vendors/arm) (Hardware): version not specified - [Cortex-A15 Firmware](https://www.precursorintelligence.com/product/arm/cortex-a15_firmware) by [Arm](https://www.precursorintelligence.com/vendors/arm) (Operating system): version not specified - [Cortex-A57](https://www.precursorintelligence.com/product/arm/cortex-a57) by [Arm](https://www.precursorintelligence.com/vendors/arm) (Hardware): version not specified - [Cortex-A57 Firmware](https://www.precursorintelligence.com/product/arm/cortex-a57_firmware) by [Arm](https://www.precursorintelligence.com/vendors/arm) (Operating system): version not specified - [Cortex-A65](https://www.precursorintelligence.com/product/arm/cortex-a65) by [Arm](https://www.precursorintelligence.com/vendors/arm) (Hardware): version not specified - [Cortex-A65 Firmware](https://www.precursorintelligence.com/product/arm/cortex-a65_firmware) by [Arm](https://www.precursorintelligence.com/vendors/arm) (Operating system): version not specified - [Cortex-A65ae](https://www.precursorintelligence.com/product/arm/cortex-a65ae) by [Arm](https://www.precursorintelligence.com/vendors/arm) (Hardware): version not specified - [Cortex-A65ae Firmware](https://www.precursorintelligence.com/product/arm/cortex-a65ae_firmware) by [Arm](https://www.precursorintelligence.com/vendors/arm) (Operating system): version not specified - [Cortex-A710](https://www.precursorintelligence.com/product/arm/cortex-a710) by [Arm](https://www.precursorintelligence.com/vendors/arm) (Hardware): version not specified - [Cortex-A710 Firmware](https://www.precursorintelligence.com/product/arm/cortex-a710_firmware) by [Arm](https://www.precursorintelligence.com/vendors/arm) (Operating system): version not specified - [Cortex-A72](https://www.precursorintelligence.com/product/arm/cortex-a72) by [Arm](https://www.precursorintelligence.com/vendors/arm) (Hardware): version not specified - [Cortex-A72 Firmware](https://www.precursorintelligence.com/product/arm/cortex-a72_firmware) by [Arm](https://www.precursorintelligence.com/vendors/arm) (Operating system): version not specified - [Cortex-A73](https://www.precursorintelligence.com/product/arm/cortex-a73) by [Arm](https://www.precursorintelligence.com/vendors/arm) (Hardware): version not specified - [Cortex-A73 Firmware](https://www.precursorintelligence.com/product/arm/cortex-a73_firmware) by [Arm](https://www.precursorintelligence.com/vendors/arm) (Operating system): version not specified - [Cortex-A75](https://www.precursorintelligence.com/product/arm/cortex-a75) by [Arm](https://www.precursorintelligence.com/vendors/arm) (Hardware): version not specified - [Cortex-A75 Firmware](https://www.precursorintelligence.com/product/arm/cortex-a75_firmware) by [Arm](https://www.precursorintelligence.com/vendors/arm) (Operating system): version not specified - [Cortex-A76](https://www.precursorintelligence.com/product/arm/cortex-a76) by [Arm](https://www.precursorintelligence.com/vendors/arm) (Hardware): version not specified - [Cortex-A76 Firmware](https://www.precursorintelligence.com/product/arm/cortex-a76_firmware) by [Arm](https://www.precursorintelligence.com/vendors/arm) (Operating system): version not specified - [Cortex-A76ae](https://www.precursorintelligence.com/product/arm/cortex-a76ae) by [Arm](https://www.precursorintelligence.com/vendors/arm) (Hardware): version not specified - [Cortex-A76ae Firmware](https://www.precursorintelligence.com/product/arm/cortex-a76ae_firmware) by [Arm](https://www.precursorintelligence.com/vendors/arm) (Operating system): version not specified - [Cortex-A77](https://www.precursorintelligence.com/product/arm/cortex-a77) by [Arm](https://www.precursorintelligence.com/vendors/arm) (Hardware): version not specified - [Cortex-A77 Firmware](https://www.precursorintelligence.com/product/arm/cortex-a77_firmware) by [Arm](https://www.precursorintelligence.com/vendors/arm) (Operating system): version not specified - [Cortex-A78](https://www.precursorintelligence.com/product/arm/cortex-a78) by [Arm](https://www.precursorintelligence.com/vendors/arm) (Hardware): version not specified - [Cortex-A78 Firmware](https://www.precursorintelligence.com/product/arm/cortex-a78_firmware) by [Arm](https://www.precursorintelligence.com/vendors/arm) (Operating system): version not specified - [Cortex-A78ae](https://www.precursorintelligence.com/product/arm/cortex-a78ae) by [Arm](https://www.precursorintelligence.com/vendors/arm) (Hardware): version not specified - [Cortex-A78ae Firmware](https://www.precursorintelligence.com/product/arm/cortex-a78ae_firmware) by [Arm](https://www.precursorintelligence.com/vendors/arm) (Operating system): version not specified - [Cortex-A78c](https://www.precursorintelligence.com/product/arm/cortex-a78c) by [Arm](https://www.precursorintelligence.com/vendors/arm) (Hardware): version not specified - [Cortex-A78c Firmware](https://www.precursorintelligence.com/product/arm/cortex-a78c_firmware) by [Arm](https://www.precursorintelligence.com/vendors/arm) (Operating system): version not specified - [Cortex-X1](https://www.precursorintelligence.com/product/arm/cortex-x1) by [Arm](https://www.precursorintelligence.com/vendors/arm) (Hardware): version not specified - [Cortex-X1 Firmware](https://www.precursorintelligence.com/product/arm/cortex-x1_firmware) by [Arm](https://www.precursorintelligence.com/vendors/arm) (Operating system): version not specified - [Cortex-X2](https://www.precursorintelligence.com/product/arm/cortex-x2) by [Arm](https://www.precursorintelligence.com/vendors/arm) (Hardware): version not specified - [Cortex-X2 Firmware](https://www.precursorintelligence.com/product/arm/cortex-x2_firmware) by [Arm](https://www.precursorintelligence.com/vendors/arm) (Operating system): version not specified - [Neoverse N1](https://www.precursorintelligence.com/product/arm/neoverse_n1) by [Arm](https://www.precursorintelligence.com/vendors/arm) (Hardware): version not specified - [Neoverse N1 Firmware](https://www.precursorintelligence.com/product/arm/neoverse_n1_firmware) by [Arm](https://www.precursorintelligence.com/vendors/arm) (Operating system): version not specified - [Neoverse N2](https://www.precursorintelligence.com/product/arm/neoverse_n2) by [Arm](https://www.precursorintelligence.com/vendors/arm) (Hardware): version not specified - [Neoverse N2 Firmware](https://www.precursorintelligence.com/product/arm/neoverse_n2_firmware) by [Arm](https://www.precursorintelligence.com/vendors/arm) (Operating system): version not specified - [Neoverse-E1](https://www.precursorintelligence.com/product/arm/neoverse-e1) by [Arm](https://www.precursorintelligence.com/vendors/arm) (Hardware): version not specified - [Neoverse-E1 Firmware](https://www.precursorintelligence.com/product/arm/neoverse-e1_firmware) by [Arm](https://www.precursorintelligence.com/vendors/arm) (Operating system): version not specified - [Neoverse-V1](https://www.precursorintelligence.com/product/arm/neoverse-v1) by [Arm](https://www.precursorintelligence.com/vendors/arm) (Hardware): version not specified - [Neoverse-V1 Firmware](https://www.precursorintelligence.com/product/arm/neoverse-v1_firmware) by [Arm](https://www.precursorintelligence.com/vendors/arm) (Operating system): version not specified ## How do I fix CVE-2022-25368? 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 - [developer.arm.com](https://developer.arm.com/support/arm-security-updates/speculative-processor-vulnerability/spectre-bhb) (Patch, Technical description, Vendor advisory) - [amperecomputing.com](https://amperecomputing.com/products/security-bulletins/impact-of-spectre-bhb-on-ampere.html) (Vendor advisory) - [cve.mitre.org](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-23960) (Third-party advisory, Vulnerability database) ## Questions ### What is CVE-2022-25368? CVE-2022-25368 is a medium-severity flaw in Ampere Altra Max Firmware from Amperecomputing, published on 10 March 2022. An attacker has to be already on the device with an ordinary user account, and nobody has to click anything. If it works, the attacker can read data. ### How serious is CVE-2022-25368? It scores 4.7 out of 10 on the CVSS severity scale, which is medium. Our risk score for CVE-2022-25368 is 13 out of 100, which is Info. Its action is "Track". No sign of exploitation and a low forecast. Patch it in your normal update cycle. ### Is CVE-2022-25368 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 0.3%. That can change at any time, which is why we keep watching. ### Which versions does CVE-2022-25368 affect? For Ampere Altra Max Firmware from Amperecomputing: version not specified. The record lists 44 products in all, each with its versions, under "Who is affected" on this page. ### How do I fix CVE-2022-25368? 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-2022-25368 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