CVE-2021-41072

Published on: 09/13/2021 12:00:00 AM UTC

Last Modified on: 09/24/2021 06:39:00 PM UTC

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H

Certain versions of Squashfs-tools from Squashfs-tools Project contain the following vulnerability:

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 has been assigned by URL Logo [email protected] to track the vulnerability - currently rated as HIGH severity.

CVSS3 Score: 8.1 - HIGH

Attack
Vector
Attack
Complexity
Privileges
Required
User
Interaction
NETWORK LOW NONE REQUIRED
Scope Confidentiality
Impact
Integrity
Impact
Availability
Impact
UNCHANGED NONE HIGH HIGH

CVSS2 Score: 5.8 - MEDIUM

Access
Vector
Access
Complexity
Authentication
NETWORK MEDIUM NONE
Confidentiality
Impact
Integrity
Impact
Availability
Impact
NONE PARTIAL PARTIAL

CVE References

Description Tags Link
unsquashfs - unvalidated filepaths allow writing outside of destination · Issue #72 · plougher/squashfs-tools · GitHub github.com
text/html
URL Logo MISC github.com/plougher/squashfs-tools/issues/72#issuecomment-913833405
Unsquashfs: additional write outside destination directory exploit fix · plougher/[email protected] · GitHub github.com
text/html
URL Logo MISC github.com/plougher/squashfs-tools/commit/e0485802ec72996c20026da320650d8362f555bd

Related QID Numbers

  • 198500 Ubuntu Security Notification for Squashfs-Tools Vulnerability (USN-5078-1)

Known Affected Configurations (CPE V2.3)

Type Vendor Product Version Update Edition Language
ApplicationSquashfs-tools ProjectSquashfs-tools4.5AllAllAll
  • cpe:2.3:a:squashfs-tools_project:squashfs-tools:4.5:*:*:*:*:*:*:*:

Social Mentions

Source Title Posted (UTC)
Twitter Icon @CVEreport CVE-2021-41072 : squashfs_opendir in unsquash-2.c in Squashfs-Tools 4.5 allows Directory Traversal, a different vul… twitter.com/i/web/status/1… 2021-09-14 01:04:39
© CVE.report 2021 Twitter Nitter Twitter Viewer |

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