Vulnerability · Published Dec 27, 2020 · Assigned by hackerone
CVE-2020-8290
High 7.8
In plain English
A high-severity privilege mismanagement in Backblaze. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 48% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.
Severity (CVSS NVD)7.8High
Exploit odds (30 days)0.6%top 51.7% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack tooling1Public PoC
Official description
Backblaze for Windows and Backblaze for macOS before 7.0.0.439 suffer from improper privilege management in `bztransmit` helper due to lack of permission handling and validation before creation of client update directories allowing for local escalation of privilege via rogue client update binary.
Affected products (as reported)
Weakness: CWE-269
References
- https://hackerone.com/reports/818857 x_refsource_MISC
- https://youtu.be/OpC6neWd2aM x_refsource_MISC
- https://github.com/geffner/CVE-2020-8290/blob/master/README.md x_refsource_MISC