busybox: An out-of-bounds heap read in Busybox's unlzma applet leads to information leak and denial of service when crafted LZ...
CVE-2021-42374 is fixed in 6 products on 1 platform, first by busybox 1:1.27.2-2ubuntu3.4, released November 15, 2021. It is not reported as exploited. Patch Radar priority: Routine.
An out-of-bounds heap read in Busybox's unlzma applet leads to information leak and denial of service when crafted LZMA-compressed input is decompressed. This can be triggered by any applet/format that
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| busybox · Debian 12.15 (bookworm) | 1:1.35.0-1 | DEBIAN-CVE-2021-42374 | Nov 15, 2021 |
| busybox · Debian 13.5 (trixie) | 1:1.35.0-1 | DEBIAN-CVE-2021-42374 | Nov 15, 2021 |
| busybox · Debian 14 | 1:1.35.0-1 | DEBIAN-CVE-2021-42374 | Nov 15, 2021 |
| busybox · Ubuntu 18.04.6 LTS (bionic) | 1:1.27.2-2ubuntu3.4 | busybox 1:1.27.2-2ubuntu3.4 | Nov 15, 2021 |
| busybox · Ubuntu 20.04 LTS (focal) | 1:1.30.1-4ubuntu6.4 | busybox 1:1.30.1-4ubuntu6.4 | Nov 15, 2021 |
| busybox · Ubuntu 22.04.1 LTS (jammy) | 1:1.30.1-7ubuntu2 | busybox 1:1.30.1-7ubuntu2 | Nov 15, 2021 |
| busybox-initramfs · Ubuntu 18.04.6 LTS (bionic) | 1:1.27.2-2ubuntu3.4 | busybox-initramfs 1:1.27.2-2ubuntu3.4 | Nov 15, 2021 |
| busybox-initramfs · Ubuntu 20.04 LTS (focal) | 1:1.30.1-4ubuntu6.4 | busybox-initramfs 1:1.30.1-4ubuntu6.4 | Nov 15, 2021 |
| busybox-initramfs · Ubuntu 22.04.1 LTS (jammy) | 1:1.30.1-7ubuntu2 | busybox-initramfs 1:1.30.1-7ubuntu2 | Nov 15, 2021 |
| busybox-static · Ubuntu 18.04.6 LTS (bionic) | 1:1.27.2-2ubuntu3.4 | busybox-static 1:1.27.2-2ubuntu3.4 | Nov 15, 2021 |
| busybox-static · Ubuntu 20.04 LTS (focal) | 1:1.30.1-4ubuntu6.4 | busybox-static 1:1.30.1-4ubuntu6.4 | Nov 15, 2021 |
| busybox-static · Ubuntu 22.04.1 LTS (jammy) | 1:1.30.1-7ubuntu2 | busybox-static 1:1.30.1-7ubuntu2 | Nov 15, 2021 |
| busybox-syslogd · Ubuntu 18.04.6 LTS (bionic) | 1:1.27.2-2ubuntu3.4 | busybox-syslogd 1:1.27.2-2ubuntu3.4 | Nov 15, 2021 |
| busybox-syslogd · Ubuntu 20.04 LTS (focal) | 1:1.30.1-4ubuntu6.4 | busybox-syslogd 1:1.30.1-4ubuntu6.4 | Nov 15, 2021 |
| busybox-syslogd · Ubuntu 22.04.1 LTS (jammy) | 1:1.30.1-7ubuntu2 | busybox-syslogd 1:1.30.1-7ubuntu2 | Nov 15, 2021 |
| udhcpc · Ubuntu 18.04.6 LTS (bionic) | 1:1.27.2-2ubuntu3.4 | udhcpc 1:1.27.2-2ubuntu3.4 | Nov 15, 2021 |
| udhcpc · Ubuntu 20.04 LTS (focal) | 1:1.30.1-4ubuntu6.4 | udhcpc 1:1.30.1-4ubuntu6.4 | Nov 15, 2021 |
| udhcpc · Ubuntu 22.04.1 LTS (jammy) | 1:1.30.1-7ubuntu2 | udhcpc 1:1.30.1-7ubuntu2 | Nov 15, 2021 |
| udhcpd · Ubuntu 18.04.6 LTS (bionic) | 1:1.27.2-2ubuntu3.4 | udhcpd 1:1.27.2-2ubuntu3.4 | Nov 15, 2021 |
| udhcpd · Ubuntu 20.04 LTS (focal) | 1:1.30.1-4ubuntu6.4 | udhcpd 1:1.30.1-4ubuntu6.4 | Nov 15, 2021 |
| udhcpd · Ubuntu 22.04.1 LTS (jammy) | 1:1.30.1-7ubuntu2 | udhcpd 1:1.30.1-7ubuntu2 | Nov 15, 2021 |
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