CVE-2021-41831 - Improper Verification of Cryptographic Signature

Severity

53%

Complexity

39%

Confidentiality

23%

It is possible for an attacker to manipulate the timestamp of signed documents. All versions of Apache OpenOffice up to 4.1.10 are affected. Users are advised to update to version 4.1.11. See CVE-2021-25634 for the LibreOffice advisory.

CVSS 3.1 Base Score 5.3. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N).

CVSS 2.0 Base Score 5. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:P/A:N).

Demo Examples

Improper Verification of Cryptographic Signature

CWE-347

In the following code, a JarFile object is created from a downloaded file.


               
JarFile jf = new JarFile(f);

The JAR file that was potentially downloaded from an untrusted source is created without verifying the signature (if present). An alternate constructor that accepts a boolean verify parameter should be used instead.

Overview

First reported 3 years ago

2021-10-11 08:15:00

Last updated 3 years ago

2021-10-19 17:54:00

Affected Software

Apache Software Foundation OpenOffice

References

N/A

[announce] 20211010 CVE-2021-41831: Apache OpenOffice: Timestamp Manipulation with Signature Wrapping

N/A

Mailing List, Vendor Advisory

[announce] 20211010 CVE-2021-41831: Apache OpenOffice: Timestamp Manipulation with Signature Wrapping

Mailing List, Vendor Advisory

Stay updated

ExploitPedia is constantly evolving. Sign up to receive a notification when we release additional functionality.

Get in touch

If you'd like to report a bug or have any suggestions for improvements then please do get in touch with us using this form. We will get back to you as soon as we can.