GHSA-v797-hfv8-v2xm CVE-2019-7849
Magento 2 Community Edition Session Fixation Check
- Severity
- 7.5 / 10
- High · CVSS 3.0
- Exploit chance (EPSS)
- 1.15%
- Chance of exploitation in the next 30 days. Higher than 66.91% of scored vulnerabilities.
- Known exploited
- No
- Not in CISA's catalog
- Weakness
- CWE-384 Session Fixation
- Fix
2.1.18- Upgrade magento/community-edition to this version or later
Description
A defense-in-depth check was added to mitigate inadequate session validation handling by 3rd party checkout modules. This impacts Magento 1.x prior to 1.9.4.2, Magento Commerce prior to 1.14.4.2, Magento 2.1 prior to 2.1.18, Magento 2.2 prior to 2.2.9 and Magento 2.3 prior to 2.3.2.
Affected versions
Packagist
| Package | Vulnerable | Fixed in |
|---|---|---|
| magento/community-edition | >= 2.1.0, < 2.1.18 |
2.1.18 |
| magento/community-edition | >= 2.2.0, < 2.2.9 |
2.2.9 |
| magento/community-edition | >= 2.3.0, < 2.3.2 |
2.3.2 |
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.
magento/community-edition Packagist → 2.1.18
- composer
composer require magento/community-edition:^2.1.18
Severity breakdown
CVSS 3.0 7.5
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- High
- Availability
- None
Weakness
CWE-384: Session Fixation
Authenticating a user, or otherwise establishing a new user session, without invalidating any existing session identifier gives an attacker the opportunity to steal authenticated sessions.
How to prevent it
- Architecture and Design: Invalidate any existing session identifiers prior to authorizing a new user session.
- Architecture and Design: For platforms such as ASP that do not generate new values for sessionid cookies, utilize a secondary cookie. In this approach, set a secondary cookie on the user's browser to a random value and set a session variable to the same value. If the session variable and the cookie value ever don't match, invalidate the session, and force the user to log on again.
- Operation: Use an application firewall that can detect attacks against this weakness. It can be beneficial in cases in which the code cannot be fixed (because it is controlled by a third party), as an emergency prevention measure while more comprehensive software assurance measures are applied, or to provide defense in depth [REF-1481].
References
Advisories
Other links
- github.com/FriendsOfPHP/security-advisories/blob/master/magento/magento1ce/CVE-…
- github.com/FriendsOfPHP/security-advisories/blob/master/magento/magento1ee/CVE-…
- github.com/FriendsOfPHP/security-advisories/blob/master/magento/product-communi…
- magento.com/security/patches/magento-2.3.2-2.2.9-and-2.1.18-security-update-33
- web.archive.org/web/20220121011306/https://magento.com/security/patches/magento-2.3.…
Timeline
- Published
- Last updated by the source
- Latest EPSS score
Related advisories
| Advisory | Severity | Why it's related |
|---|---|---|
| GHSA-wh92-6q6g-px7j Magento Community Edition Improper Input Validation vulnerability | Critical Known exploited | Also affects magento/community-edition |
| GHSA-m8cj-3v68-3cxj Magento Open Source affected by an Improper Restriction of XML External Entity Reference ('XXE') vulnerability | Critical Known exploited | Also affects magento/community-edition |
| GHSA-f8fv-f786-9933 Magento improper input validation vulnerability | Critical Known exploited | Also affects magento/community-edition |
| GHSA-qvwr-p3hj-j6jf Magento vulnerable to privilege escalation due to incorrect authorization | Medium | Also affects magento/community-edition |
| GHSA-pcrx-r49h-x2w5 Magento vulnerable to stored Cross-Site Scripting (XSS) | Medium | Also affects magento/community-edition |
| GHSA-r355-75hw-r8jf Magento allows incorrect authorization | Medium | Also affects magento/community-edition |
| GHSA-2768-5wmv-cfff Magento vulnerable to stored Cross-Site Scripting (XSS) | High | Also affects magento/community-edition |
| GHSA-69x9-xp2j-w8g8 Magento provides incorrect authorization through a security feature bypass | High | Also affects magento/community-edition |
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