GHSA-rg8f-5p7x-m6wv CVE-2021-43257
MantisBT CSV Injection unprivileged user access in csv_export.php
- Severity
- 7.8 / 10
- High · CVSS 3.1
- Exploit chance (EPSS)
- 0.98%
- Chance of exploitation in the next 30 days. Higher than 62.20% of scored vulnerabilities.
- Known exploited
- No
- Not in CISA's catalog
- Weakness
- CWE-1236 Improper Neutralization of Formula Elements in a CSV File
- Fix
2.25.3- Upgrade mantisbt/mantisbt to this version or later
Description
Lack of Neutralization of Formula Elements in the CSV API of MantisBT before 2.25.3 allows an unprivileged attacker to execute code or gain access to information when a user opens the csv_export.php generated CSV file in Excel.
Affected versions
Packagist
| Package | Vulnerable | Fixed in |
|---|---|---|
| mantisbt/mantisbt | < 2.25.3 |
2.25.3 |
How to fix
Move to the fixed version or later with your package manager, update the lockfile, and run your tests. If the package only arrives through another dependency, upgrade that dependency first. If none of its releases pulls a fixed version yet, force the version with your package manager's override.
mantisbt/mantisbt Packagist → 2.25.3
- composer
composer require mantisbt/mantisbt:^2.25.3
Severity breakdown
CVSS 3.1 7.8
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Weakness
CWE-1236: Improper Neutralization of Formula Elements in a CSV File
The product saves user-provided information into a Comma-Separated Value (CSV) file, but it does not neutralize or incorrectly neutralizes special elements that could be interpreted as a command when the file is opened by a spreadsheet product.
How to prevent it
- Implementation: When generating CSV output, ensure that formula-sensitive metacharacters are effectively escaped or removed from all data before storage in the resultant CSV. Risky characters include '=' (equal), '+' (plus), '-' (minus), and '@' (at).
- Implementation: If a field starts with a formula character, prepend it with a ' (single apostrophe), which prevents Excel from executing the formula.
- Architecture and Design: Certain implementations of spreadsheet software might disallow formulas from executing if the file is untrusted, or if the file is not authored by the current user.
References
Advisories
Packages
Other links
Timeline
- Published
- Last updated by the source
- Latest EPSS score
Related advisories
| Advisory | Severity | Why it's related |
|---|---|---|
| GHSA-h2wf-967x-gxvw MantisBT: Stored XSS in print_all_bug_page_word.php | High | Also affects mantisbt/mantisbt |
| GHSA-4vpf-w7qv-5h3q MantisBT: Injection of TIME_TRACKING and REMINDER Notes via REST and SOAP APIs | Medium | Also affects mantisbt/mantisbt |
| GHSA-3v2j-6fw9-f57c MantisBT: REST and SOAP API Issue Update Accepts Unreleased Product Versions From Updaters | Medium | Also affects mantisbt/mantisbt |
| GHSA-vcrw-4xvv-jh49 MantisBT: Reflected XSS in admin/install.php via unescaped printf | Critical | Also affects mantisbt/mantisbt |
| GHSA-77x8-3v3h-hrhv MantisBT: Reflected XSS in admin/install.php | Critical | Also affects mantisbt/mantisbt |
| GHSA-m7ph-9558-mrx3 MantisBT: REST API unauthorized Issue status change | Medium | Also affects mantisbt/mantisbt |
| GHSA-v84x-qvhg-f36r MantisBT: Remote Code Execution via eval() Class Hoisting in adm_config_set.php | High | Also affects mantisbt/mantisbt |
| GHSA-c2xg-qjqw-2v98 MantisBT: SOAP API Authentication Bypass with Privilege Escalation to Administrator | Critical | Also affects mantisbt/mantisbt |
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