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Known exploited vulnerability

CVE-2018-15133

highCVSS 3.1 8.1In CISA KEVEPSS 77%Published · n/a

The short answer

CVE-2018-15133 affects n/a n/a and is rated high (CVSS 8.1). CISA added it to the Known Exploited Vulnerabilities catalog on 2024-01-16: attackers are using it, so patch it first. Fixed versions are published for laravel/framework (5.6.30).

What it is

In Laravel Framework through 5.5.40 and 5.6.x through 5.6.29, remote code execution might occur as a result of an unserialize call on a potentially untrusted X-XSRF-TOKEN value. This involves the decrypt method in Illuminate/Encryption/Encrypter.php and PendingBroadcast in gadgetchains/Laravel/RCE/3/chain.php in phpggc. The attacker must know the application key, which normally would never occur, but could happen if the attacker previously had privileged access or successfully accomplished a previous attack.

Weakness: CWE-502.

Severity

8.1 high

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploited (CISA KEV)

Yes, since Jan 16, 2024

Federal due date Feb 6, 2024

EPSS, next 30 days

77%

Higher than 100% of scored CVEs

How it can be exploited

Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

What CISA says to do

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Affected packages and fixed versions

PackageEcosystemFixed inAdvisory
laravel/frameworkPackagist5.6.30GHSA-qvqm-h22r-4cp9

Is it in your code? Drop your lockfile into the free vulnerability check, or let vulnerability watch check your repository every day and open the upgrade as a pull request.

Affected products

n/a. NVD's record lists the exact affected versions.

References

Questions

Is CVE-2018-15133 being exploited?

Yes. CISA added CVE-2018-15133 to its Known Exploited Vulnerabilities catalog on 2024-01-16, with a federal remediation due date of 2024-02-06.

How do I fix CVE-2018-15133?

Upgrade to a fixed version: laravel/framework (Packagist) 5.6.30. CISA's required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.

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