USN-5179-1: BusyBox vulnerabilities
7 December 2021
Several security issues were fixed in BusyBox.
Releases
Packages
- busybox - Tiny utilities for small and embedded systems
Details
It was discovered that BusyBox incorrectly handled certain malformed gzip
archives. If a user or automated system were tricked into processing a
specially crafted gzip archive, a remote attacker could use this issue to
cause BusyBox to crash, resulting in a denial of service, or possibly
execute arbitrary code. (CVE-2021-28831)
It was discovered that BusyBox incorrectly handled certain malformed LZMA
archives. If a user or automated system were tricked into processing a
specially crafted LZMA archive, a remote attacker could use this issue to
cause BusyBox to crash, resulting in a denial of service, or possibly
leak sensitive information. (CVE-2021-42374)
Vera Mens, Uri Katz, Tal Keren, Sharon Brizinov, and Shachar Menashe
discovered that BusyBox incorrectly handled certain awk patterns. If a user
or automated system were tricked into processing a specially crafted awk
pattern, a remote attacker could use this issue to cause BusyBox to crash,
resulting in a denial of service, or possibly execute arbitrary code.
(CVE-2021-42378, CVE-2021-42379, CVE-2021-42380, CVE-2021-42381,
CVE-2021-42382, CVE-2021-42384, CVE-2021-42385, CVE-2021-42386)
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 21.10
-
busybox
-
1:1.30.1-6ubuntu3.1
-
busybox-initramfs
-
1:1.30.1-6ubuntu3.1
-
busybox-static
-
1:1.30.1-6ubuntu3.1
Ubuntu 21.04
-
busybox
-
1:1.30.1-6ubuntu2.1
-
busybox-initramfs
-
1:1.30.1-6ubuntu2.1
-
busybox-static
-
1:1.30.1-6ubuntu2.1
Ubuntu 20.04
-
busybox
-
1:1.30.1-4ubuntu6.4
-
busybox-initramfs
-
1:1.30.1-4ubuntu6.4
-
busybox-static
-
1:1.30.1-4ubuntu6.4
Ubuntu 18.04
-
busybox
-
1:1.27.2-2ubuntu3.4
-
busybox-initramfs
-
1:1.27.2-2ubuntu3.4
-
busybox-static
-
1:1.27.2-2ubuntu3.4
In general, a standard system update will make all the necessary changes.
Related notices
- USN-5179-2: busybox-syslogd, busybox-static, udhcpc, busybox-initramfs, udhcpd, busybox
- USN-6335-1: busybox-syslogd, busybox-static, udhcpc, busybox-initramfs, udhcpd, busybox