Vulnerability Details : CVE-2020-8290
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.
Products affected by CVE-2020-8290
- cpe:2.3:a:backblaze:backblaze:*:*:*:*:*:macos:*:*
- cpe:2.3:a:backblaze:backblaze:*:*:*:*:*:windows:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-8290
0.05%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 19 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-8290
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.6
|
MEDIUM | AV:L/AC:L/Au:N/C:P/I:P/A:P |
3.9
|
6.4
|
NIST | |
|
7.8
|
HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
1.8
|
5.9
|
NIST |
CWE ids for CVE-2020-8290
-
The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.Assigned by:
- nvd@nist.gov (Primary)
- support@hackerone.com (Secondary)
References for CVE-2020-8290
-
https://github.com/geffner/CVE-2020-8290/blob/master/README.md
CVE-2020-8290/README.md at master · geffner/CVE-2020-8290 · GitHubExploit;Third Party Advisory
-
https://youtu.be/OpC6neWd2aM
CVE-2020-8290 – Elevation of Privilege in Backblaze - YouTubeExploit;Third Party Advisory
-
https://hackerone.com/reports/818857
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