QID 670832

Date Published: 2021-11-18

QID 670832: EulerOS Security Update for squashfs-tools (EulerOS-SA-2021-2698)

Squashfs is a highly compressed read-only filesystem for Linux. This package contains the utilities for manipulating squashfs filesystems. Security Fix(es): 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)
Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

An arbitrary attacker may exploit this vulnerability to compromise the system.

CVSS V3 rated as Critical - 8.1 severity.

CVSS V2 rated as Medium - 5.8 severity.

Solution

The Vendor has released a security update to fix the vulnerability. For more information please visit EulerOS-SA-2021-2698 for updates and patch information

Vendor References

EulerOS-SA-2021-2698 - developer.huaweicloud.com/ict/en/site-euleros/euleros/security-advisories/EulerOS-SA-2021-2698

CVEs related to QID 670832

CVE-2021-40153 |

Software Advisories

Advisory ID	Software	Component	Link
EulerOS-SA-2021-2698	EulerOS V2.0SP9		developer.huaweicloud.com/ict/en/site-euleros/euleros/security-advisories/EulerOS-SA-2021-2698

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