CVE-2021-41072

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

Last Modified on: 06/28/2022 02:11:00 PM UTC

CVE-2021-41072

Source: Mitre Source: Nist Print: PDF PDF
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H

Certain versions of Debian Linux from Debian 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
[SECURITY] [DLA 2789-1] squashfs-tools security update lists.debian.org
text/html
 URL Logo MLIST [debian-lts-announce] 20211020 [SECURITY] [DLA 2789-1] squashfs-tools security update
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
Debian -- Security Information -- DSA-4987-1 squashfs-tools www.debian.org
Depreciated Link
text/html
 URL Logo DEBIAN DSA-4987
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Related QID Numbers

  • 178823 Debian Security Update for squashfs-tools (DSA 4987-1)
  • 178845 Debian Security Update for squashfs-tools (DLA 2789-1)
  • 198500 Ubuntu Security Notification for Squashfs-Tools Vulnerability (USN-5078-1)
  • 198537 Ubuntu Security Notification for Squashfs-Tools Vulnerability (USN-5078-3)
  • 501784 Alpine Linux Security Update for squashfs-tools
  • 671158 EulerOS Security Update for squashfs-tools (EulerOS-SA-2021-2814)
  • 671188 EulerOS Security Update for squashfs-tools (EulerOS-SA-2021-2936)
  • 671216 EulerOS Security Update for squashfs-tools (EulerOS-SA-2022-1019)
  • 671226 EulerOS Security Update for squashfs-tools (EulerOS-SA-2022-1039)
  • 671232 EulerOS Security Update for squashfs-tools (EulerOS-SA-2022-1189)
  • 671285 EulerOS Security Update for squashfs-tools (EulerOS-SA-2022-1216)
  • 671297 EulerOS Security Update for squashfs-tools (EulerOS-SA-2022-1235)
  • 901101 Common Base Linux Mariner (CBL-Mariner) Security Update for squashfs-tools (7464-1)

Known Affected Configurations (CPE V2.3)

Type Vendor Product Version Update Edition Language
Operating
System		DebianDebian Linux10.0AllAllAll
Operating
System		DebianDebian Linux11.0AllAllAll
Operating
System		DebianDebian Linux9.0AllAllAll
ApplicationSquashfs-tools ProjectSquashfs-tools4.5AllAllAll
  • cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*:
  • cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*:
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*:
  • 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 2022 Twitter Nitter Twitter Viewer |

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