An update for squashfs-tools is now available for openEuler-20.03-LTS-SP1 and openEuler-20.03-LTS-SP2 Security Advisory openeuler-security@openeuler.org openEuler security committee openEuler-SA-2021-1425 Final 1.0 1.0 2021-11-12 Initial 2021-11-12 2021-11-12 openEuler SA Tool V1.0 2021-11-12 squashfs-tools security update An update for squashfs-tools is now available for openEuler-20.03-LTS-SP1 and openEuler-20.03-LTS-SP2. Squashfs is a highly compressed read-only filesystem for Linux. It uses either gzip/xz/lzo/lz4/zstd compression to compress both files, inodes and directories. Security Fix(es): squashfs_opendir in unsquash-2.c in Squashfs-Tools 4.5 allows Directory Traversal, a different vulnerability than CVE-2021-40153. A squashfs filesystem that has been crafted to include a symbolic link and then contents under the same filename in a filesystem can cause unsquashfs to first create the symbolic link pointing outside the expected directory, and then the subsequent write operation will cause the unsquashfs process to write through the symbolic link elsewhere in the filesystem.(CVE-2021-41072) 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.(CVE-2021-40153) An update for squashfs-tools is now available for openEuler-20.03-LTS-SP1 and openEuler-20.03-LTS-SP2. openEuler Security has rated this update as having a security impact of high. A Common Vunlnerability Scoring System(CVSS)base score,which gives a detailed severity rating, is available for each vulnerability from the CVElink(s) in the References section. High squashfs-tools https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2021-1425 https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2021-41072 https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2021-40153 https://nvd.nist.gov/vuln/detail/CVE-2021-41072 https://nvd.nist.gov/vuln/detail/CVE-2021-40153 openEuler-20.03-LTS-SP1 openEuler-20.03-LTS-SP2 squashfs-tools-4.4-5.oe1.aarch64.rpm squashfs-tools-debuginfo-4.4-5.oe1.aarch64.rpm squashfs-tools-debugsource-4.4-5.oe1.aarch64.rpm squashfs-tools-debugsource-4.4-5.oe1.aarch64.rpm squashfs-tools-4.4-5.oe1.aarch64.rpm squashfs-tools-debuginfo-4.4-5.oe1.aarch64.rpm squashfs-tools-4.4-5.oe1.src.rpm squashfs-tools-4.4-5.oe1.src.rpm squashfs-tools-debuginfo-4.4-5.oe1.x86_64.rpm squashfs-tools-debugsource-4.4-5.oe1.x86_64.rpm squashfs-tools-4.4-5.oe1.x86_64.rpm squashfs-tools-4.4-5.oe1.x86_64.rpm squashfs-tools-debugsource-4.4-5.oe1.x86_64.rpm squashfs-tools-debuginfo-4.4-5.oe1.x86_64.rpm squashfs_opendir in unsquash-2.c in Squashfs-Tools 4.5 allows Directory Traversal, a different vulnerability than CVE-2021-40153. A squashfs filesystem that has been crafted to include a symbolic link and then contents under the same filename in a filesystem can cause unsquashfs to first create the symbolic link pointing outside the expected directory, and then the subsequent write operation will cause the unsquashfs process to write through the symbolic link elsewhere in the filesystem. 2021-11-12 CVE-2021-41072 openEuler-20.03-LTS-SP1 openEuler-20.03-LTS-SP2 High 8.1 AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H squashfs-tools security update 2021-11-12 https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2021-1425 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. 2021-11-12 CVE-2021-40153 openEuler-20.03-LTS-SP1 openEuler-20.03-LTS-SP2 High 8.1 AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H squashfs-tools security update 2021-11-12 https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2021-1425