CVE-2017-8851 Security feature bypass in n/a
Attackers can bypass OTA verification to install incorrect firmware on OnePlus devices, potentially causing denial of service or enabling further exploitation.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2017-8851?
CVE-2017-8851 is a medium-severity vulnerability in n/a, published on 11 May 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An issue was discovered on OnePlus One and X devices. Due to a lenient updater-script on the OnePlus One and X OTA images, the fact that both products use the same OTA verification keys, and the fact that both products share the same 'ro.build.product' system property, attackers can install OTAs of one product over the other, even on locked bootloaders. That could theoretically allow for exploitation of vulnerabilities patched on one image but not on the other, in addition to expansion of the attack surface. Moreover, the vulnerability may result in having the device unusable until a Factory Reset is performed. This vulnerability can be exploited by Man-in-the-Middle (MiTM) attackers targeting the update process. This is possible because the update transaction does not occur over TLS (CVE-2016-10370). In addition, physical attackers can reboot the phone into recovery, and then use 'adb sideload' to push the OTA.
Weakness: CWE-319
Which versions are affected by CVE-2017-8851?
It affects 1 product.
Products include Oneplus Oxygenos.
How do I fix CVE-2017-8851?
No fix has been published for CVE-2017-8851 yet. Limit exposure of the affected software until one is available.
Is CVE-2017-8851 being exploited?
There is no known exploitation of CVE-2017-8851 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-4c45-vj44-g553.