CVE-2017-16544

critical-risk
Published 2017-11-20

In the add_match function in libbb/lineedit.c in BusyBox through 1.27.2, the tab autocomplete feature of the shell, used to get a list of filenames in a directory, does not sanitize filenames and results in executing any escape sequence in the terminal. This could potentially result in code execution, arbitrary file writes, or other attacks.

Do I need to act?

~
3.3% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.8/10 High
NETWORK / LOW complexity

Affected Products (20)

Affected Vendors

Canonical Redlion Debian Vmware Busybox

References (40)

Exploit http://packetstormsecurity.com/files/154361/Cisco-Device-Hardcoded-Credentials-G...
Exploit http://packetstormsecurity.com/files/154536/VMware-Security-Advisory-2019-0013.h...
Exploit http://packetstormsecurity.com/files/167552/Nexans-FTTO-GigaSwitch-Outdated-Comp...
Exploit http://seclists.org/fulldisclosure/2019/Jun/18
Exploit http://seclists.org/fulldisclosure/2019/Sep/7
Exploit http://seclists.org/fulldisclosure/2020/Aug/20
Exploit http://seclists.org/fulldisclosure/2020/Mar/15
Exploit http://seclists.org/fulldisclosure/2020/Sep/6
Exploit http://seclists.org/fulldisclosure/2021/Aug/21
Exploit http://seclists.org/fulldisclosure/2021/Jan/39
Exploit http://seclists.org/fulldisclosure/2022/Jun/36
Third Party Advisory http://www.vmware.com/security/advisories/VMSA-2019-0013.html
Patch https://git.busybox.net/busybox/commit/?id=c3797d40a1c57352192c6106cc0f435e7d9c1...
Mailing List https://lists.debian.org/debian-lts-announce/2018/07/msg00037.html
Mailing List https://lists.debian.org/debian-lts-announce/2021/02/msg00020.html
Exploit https://seclists.org/bugtraq/2019/Jun/14
Exploit https://seclists.org/bugtraq/2019/Sep/7
Third Party Advisory https://us-cert.cisa.gov/ics/advisories/icsa-20-240-01
Third Party Advisory https://usn.ubuntu.com/3935-1/
Third Party Advisory https://www.twistlock.com/2017/11/20/cve-2017-16544-busybox-autocompletion-vulne...
and 20 more references
70
/ 100
critical-risk
Severity 30/34 · Critical
Exploitability 7/34 · Low
Exposure 33/34 · Critical