CVE-2021-40153

Name
CVE-2021-40153
Description
squashfs_opendir in unsquash-1.c in Squashfs-Tools 4.5 stores the filename in the directory entry; this is then used by unsquashfs to create the new file during the unsquash. The filename is not validated for traversal outside of the destination directory, and thus allows writing to locations outside of the destination.
NVD Severity
high
Other trackers
Mailing lists
Exploits
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
MISC https://bugs.launchpad.net/ubuntu/+source/squashfs-tools/+bug/1941790
MISC https://github.com/plougher/squashfs-tools/commit/79b5a555058eef4e1e7ff220c344d39f8cd09646
MISC https://github.com/plougher/squashfs-tools/issues/72
FEDORA https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RAOZ4BKWAC4Y3U2K5MMW3S77HWWXHQDL/
MLIST https://lists.debian.org/debian-lts-announce/2021/08/msg00030.html
Third Party Advisory https://www.debian.org/security/2021/dsa-4967
Mailing List https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GSMRKVJMJFX3MB7D3PXJSYY3TLZROE5S/

Match rules

CPE URI Source package Min version Max version
cpe:2.3:a:squashfs-tools_project:squashfs-tools:4.5:*:*:*:*:*:*:* squashfs-tools == None == 4.5

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
squashfs-tools 3.13-main 4.5-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
squashfs-tools 3.12-main 4.5-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
squashfs-tools 3.11-main 4.5-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
squashfs-tools edge-main 4.5-r1 Natanael Copa <ncopa@alpinelinux.org> fixed
squashfs-tools 3.14-main 4.5-r1 Natanael Copa <ncopa@alpinelinux.org> fixed
squashfs-tools 3.15-main 4.5-r1 Natanael Copa <ncopa@alpinelinux.org> fixed