Description
A use-after-free in Busybox 1.35-x's awk applet leads to denial of service and possibly code execution when processing a crafted awk pattern in the copyvar function.
References (2)
Core 2
Core References
Exploit, Issue Tracking, Third Party Advisory
https://bugs.busybox.net/show_bug.cgi?id=14781
Third Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-333517.pdf
Scores
CVSS v3
7.8
EPSS
0.0066
EPSS Percentile
71.2%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Details
CWE
CWE-416
Status
published
Products (7)
busybox/busybox
1.35.0
siemens/scalance_sc622-2c_firmware
< 3.0
siemens/scalance_sc626-2c_firmware
< 3.0
siemens/scalance_sc632-2c_firmware
< 3.0
siemens/scalance_sc636-2c_firmware
< 3.0
siemens/scalance_sc642-2c_firmware
< 3.0
siemens/scalance_sc646-2c_firmware
< 3.0
Published
May 18, 2022
Tracked Since
Feb 18, 2026