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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.58%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.58% probability · 46th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-269
- Affected
- backblaze/backblaze
- Source
- support@hackerone.com
References
- https://github.com/geffner/CVE-2020-8290/blob/master/README.mdExploit, Third Party Advisory
- https://hackerone.com/reports/818857Permissions Required
- https://youtu.be/OpC6neWd2aMExploit, Third Party Advisory
- https://github.com/geffner/CVE-2020-8290/blob/master/README.mdExploit, Third Party Advisory
- https://hackerone.com/reports/818857Permissions Required
- https://youtu.be/OpC6neWd2aMExploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.