what you don't know can hurt you

OX Documents 7.10.5 Improper Authorization

OX Documents 7.10.5 Improper Authorization
Posted Jul 20, 2021
Authored by Martin Heiland

OX Documents version 7.10.5 suffers from multiple improper authorization vulnerabilities.

tags | advisory, vulnerability
advisories | CVE-2021-28093, CVE-2021-28094, CVE-2021-28095
MD5 | 10c429162cc33a9887ff910961477633

OX Documents 7.10.5 Improper Authorization

Change Mirror Download
Product: OX Documents
Vendor: OX Software GmbH


Internal reference: DOCS-3199
Vulnerability type: Improper Authorization (CWE-285)
Vulnerable version: 7.10.5 and earlier
Vulnerable component: imageconverter
Report confidence: Confirmed
Solution status: Fixed by Vendor
Fixed version: 7.10.3-rev14, 7.10.4-rev8, 7.10.5-rev5
Vendor notification: 2021-01-26
Solution date: 2021-02-16
Public disclosure: 2021-07-19
CVE reference: CVE-2021-28093
CVSS: 5.9 (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N)

Vulnerability Details:
Converted images are cached for faster processing when requesting the same resource again. This cache used a weak mechanisms (Adler32) to create cache keys, vulnerable accidental or purposeful hash colissions.

Risk:
Image content could be swapped by hash key colissions, resulting in a loss of confidentiality or integrity.

Steps to reproduce:
1. Create two image files that would generate the same hash key
2. Upload both files
3. View Image A
4. View Image B - The content of Image A will be served from the cache

Solution:
We now use a hashing algorithm (SHA-256) that is not prone to hash collissions.



---



Internal reference: DOCS-3200
Vulnerability type: Improper Authorization (CWE-285)
Vulnerable version: 7.10.5 and earlier
Vulnerable component: documentconverter
Report confidence: Confirmed
Solution status: Fixed by Vendor
Fixed version: 7.10.3-rev34, 7.10.4-rev20, 7.10.5-rev7
Vendor notification: 2021-01-26
Solution date: 2021-02-15
Public disclosure: 2021-07-19
CVE reference: CVE-2021-28094
CVSS: 5.9 (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N)

Vulnerability Details:
Converted documents are cached for faster processing when requesting the same resource again. This cache used a weak mechanisms (CRC32) to create cache keys, vulnerable accidental or purposeful hash colissions.

Risk:
Document content could be swapped by hash key colissions, resulting in a loss of confidentiality or integrity.

Steps to reproduce:
1. Create two document files that would generate the same hash key
2. Upload both files
3. View document A
4. View document B - The content of document A will be served from the cache

Solution:
We now use a hashing algorithm (SHA-256) that is not prone to hash collissions.



---



Internal reference: DOCS-3201
Vulnerability type: Improper Authorization (CWE-285)
Vulnerable version: 7.10.5 and earlier
Vulnerable component: office
Report confidence: Confirmed
Solution status: Fixed by Vendor
Fixed version: 7.10.3-rev10, 7.10.4-rev8, 7.10.5-rev5
Vendor notification: 2021-01-26
Solution date: 2021-02-15
Public disclosure: 2021-07-19
CVE reference: CVE-2021-28095
CVSS: 5.9 (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N)

Vulnerability Details:
Documents are cached for faster processing when requesting the same resource again. This cache used a weak mechanisms (CRC32) to create cache keys, vulnerable accidental or purposeful hash colissions.

Risk:
Document content could be swapped by hash key colissions, resulting in a loss of confidentiality or integrity.

Steps to reproduce:
1. Create two documents that contain XML structures which create a hash collision
2. Upload both files
3. Edit document A
4. Edit document B - The content of document A will be served from the cache

Solution:
We now use a hashing algorithm (SHA-256) that is not prone to hash collissions.
Login or Register to add favorites

File Archive:

September 2021

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Sep 1st
    14 Files
  • 2
    Sep 2nd
    19 Files
  • 3
    Sep 3rd
    9 Files
  • 4
    Sep 4th
    1 Files
  • 5
    Sep 5th
    2 Files
  • 6
    Sep 6th
    3 Files
  • 7
    Sep 7th
    12 Files
  • 8
    Sep 8th
    22 Files
  • 9
    Sep 9th
    17 Files
  • 10
    Sep 10th
    19 Files
  • 11
    Sep 11th
    3 Files
  • 12
    Sep 12th
    2 Files
  • 13
    Sep 13th
    15 Files
  • 14
    Sep 14th
    16 Files
  • 15
    Sep 15th
    15 Files
  • 16
    Sep 16th
    7 Files
  • 17
    Sep 17th
    13 Files
  • 18
    Sep 18th
    2 Files
  • 19
    Sep 19th
    2 Files
  • 20
    Sep 20th
    14 Files
  • 21
    Sep 21st
    0 Files
  • 22
    Sep 22nd
    0 Files
  • 23
    Sep 23rd
    0 Files
  • 24
    Sep 24th
    0 Files
  • 25
    Sep 25th
    0 Files
  • 26
    Sep 26th
    0 Files
  • 27
    Sep 27th
    0 Files
  • 28
    Sep 28th
    0 Files
  • 29
    Sep 29th
    0 Files
  • 30
    Sep 30th
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2020 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close