CVE-2021-42376 — NULL Pointer Dereference in Busybox
Severity
5.5MEDIUMNVD
EPSS
0.0%
top 86.41%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedNov 15
Latest updateNov 27
Description
A NULL pointer dereference in Busybox's hush applet leads to denial of service when processing a crafted shell command, due to missing validation after a \x03 delimiter character. This may be used for DoS under very rare conditions of filtered command input.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6
Affected Packages6 packages
Also affects: Fedora 33, 34
🔴Vulnerability Details
2GHSA▶
GHSA-rxm7-xwcf-84fm: A NULL pointer dereference in Busybox's hush applet leads to denial of service when processing a crafted shell command, due to missing validation afte↗2022-05-24
OSV▶
CVE-2021-42376: A NULL pointer dereference in Busybox's hush applet leads to denial of service when processing a crafted shell command, due to missing validation afte↗2021-11-15
📋Vendor Advisories
6Red Hat▶
busybox: NULL pointer dereference in hush applet leads to denial of service when processing a crafted shell command↗2021-11-09
Microsoft▶
A NULL pointer dereference in Busybox's hush applet leads to denial of service when processing a crafted shell command due to missing validation after a \x03 delimiter character. This may be used for ↗2021-11-09
📄Research Papers
1arXiv
▶