Vulnerability in Apple macOS
CVE-2021-23827
Keybase Desktop Client before 5.6.0 on Windows and macOS, and before 5.6.1 on Linux, allows an attacker to obtain potentially sensitive media (such as private pictures) in the Cache and uploadtemps directories. It fails to effectively clear cached pictures, even after deletion via normal methodology within the client, or by utilizing the "Explode message/Explode now" functionality. Local filesystem access is needed by the attacker.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.003 (20.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 21st percentile — 20.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/keybase/client/releases (Third Party Advisory, Release Notes)
- johnjhacking.com/blog/cve-2021-23827/ (Exploit, Third Party Advisory)
- hackerone.com/reports/1074930 (Exploit, Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2021-23827?
- CVE-2021-23827 is a medium-severity vulnerability in Apple macOS, classified under Cleartext Storage of Sensitive Information. CVSS score: 5.5/10. Published 2021-02-23.
- How severe is CVE-2021-23827?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2021-23827 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.