RCE in Digint Btrbk
CVE-2021-38173
Btrbk before 0.31.2 allows command execution because of the mishandling of remote hosts filtering SSH commands using ssh_filter_btrbk.sh in authorized_keys.
Vulnerability class: Command Injection (OS Command Injection)
EPSS: 0.032 (86.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Digint Btrbk
- Debian Debian_linux — versions 9.0
- Fedoraproject Fedora — versions 34, 35
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Patch, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (x_refsource_CONFIRM, Third Party Advisory, Release Notes)
- cve@mitre.org (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- cve@mitre.org (x_refsource_FEDORA, vendor-advisory)
- cve@mitre.org (x_refsource_FEDORA, vendor-advisory)
Frequently asked questions
- What is CVE-2021-38173?
- CVE-2021-38173 is a critical-severity vulnerability in Digint Btrbk, classified under Command Injection. CVSS score: 9.8/10. Published 2021-08-07.
- How severe is CVE-2021-38173?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2021-38173 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.