NVD
- Id
- 85940
- Name
- CVE-2017-5948
- Description
- An issue was discovered on OnePlus One, X, 2, 3, and 3T devices. OxygenOS and HydrogenOS are vulnerable to downgrade attacks. This is due to a lenient 'updater-script' in OTAs that does not check that the current version is lower than or equal to the given image's. Downgrades can occur even on locked bootloaders and without triggering a factory reset, allowing for exploitation of now-patched vulnerabilities with access to user data. This vulnerability can be exploited by a Man-in-the-Middle (MiTM) attacker targeting the update process. This is possible because the update transaction does not occur over TLS (CVE-2016-10370). In addition, a physical attacker can reboot the phone into recovery, and then use 'adb sideload' to push the OTA (on OnePlus 3/3T 'Secure Start-up' must be off).
- Reject
- CVSS Version
- 2
- CVSS Score
- 4.3
- Severity
- Medium
- CVSS Base Score
- 4.3
- CVSS Impact Subscore
- 2.9
- CVSS Exploit Subscore
- 8.6
- CVSS Vector
- (AV:N/AC:M/Au:N/C:N/I:P/A:N)
- Pub Date
- 2017-05-27
- Published
- 2017-05-11
- Modified Date
- 2017-05-19
- Seq
- 2017-5948
