Debian Security Advisory DSA-4987-1 [email protected]
https://www.debian.org/security/ Salvatore Bonaccorso
October 15, 2021 https://www.debian.org/security/faq
Package : squashfs-tools
CVE ID : CVE-2021-41072
Debian Bug : 994262
Richard Weinberger reported that unsquashfs in squashfs-tools, the tools
to create and extract Squashfs filesystems, does not check for duplicate
filenames within a directory. An attacker can take advantage of this
flaw for writing to arbitrary files to the filesystem if a malformed
Squashfs image is processed.
For the oldstable distribution (buster), this problem has been fixed
in version 1:4.3-12+deb10u2.
For the stable distribution (bullseye), this problem has been fixed in
version 1:4.4-2+deb11u2.
We recommend that you upgrade your squashfs-tools packages.
For the detailed security status of squashfs-tools please refer to its
security tracker page at:
https://security-tracker.debian.org/tracker/squashfs-tools
Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/
Mailing list: [email protected]
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Debian | 9 | armhf | squashfs-tools | < 4.3-3+deb9u3 | squashfs-tools_4.3-3+deb9u3_armhf.deb |
Debian | 11 | ppc64el | squashfs-tools-dbgsym | < 4.4-2+deb11u2 | squashfs-tools-dbgsym_4.4-2+deb11u2_ppc64el.deb |
Debian | 10 | arm64 | squashfs-tools | < 4.3-12+deb10u2 | squashfs-tools_4.3-12+deb10u2_arm64.deb |
Debian | 10 | mipsel | squashfs-tools-dbgsym | < 4.3-12+deb10u2 | squashfs-tools-dbgsym_4.3-12+deb10u2_mipsel.deb |
Debian | 11 | ppc64el | squashfs-tools | < 4.4-2+deb11u2 | squashfs-tools_4.4-2+deb11u2_ppc64el.deb |
Debian | 10 | i386 | squashfs-tools-dbgsym | < 4.3-12+deb10u2 | squashfs-tools-dbgsym_4.3-12+deb10u2_i386.deb |
Debian | 9 | arm64 | squashfs-tools | < 4.3-3+deb9u3 | squashfs-tools_4.3-3+deb9u3_arm64.deb |
Debian | 9 | i386 | squashfs-tools-dbg | < 4.3-3+deb9u3 | squashfs-tools-dbg_4.3-3+deb9u3_i386.deb |
Debian | 10 | ppc64el | squashfs-tools-dbgsym | < 4.3-12+deb10u2 | squashfs-tools-dbgsym_4.3-12+deb10u2_ppc64el.deb |
Debian | 10 | armhf | squashfs-tools | < 4.3-12+deb10u2 | squashfs-tools_4.3-12+deb10u2_armhf.deb |