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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2021-41072 Detail

Description

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://github.com/plougher/squashfs-tools/commit/e0485802ec72996c20026da320650d8362f555bd Patch  Third Party Advisory 
https://github.com/plougher/squashfs-tools/issues/72#issuecomment-913833405 Exploit  Third Party Advisory 
https://lists.debian.org/debian-lts-announce/2021/10/msg00017.html Mailing List  Third Party Advisory 
https://security.gentoo.org/glsa/202305-29
https://www.debian.org/security/2021/dsa-4987 Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') cwe source acceptance level NIST  
CWE-59 Improper Link Resolution Before File Access ('Link Following') cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

7 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-41072
NVD Published Date:
09/13/2021
NVD Last Modified:
05/30/2023
Source:
MITRE