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CVE-2023-34448

8.8 · HIGH

Grav is a flat-file content management system.

Published Jun 14, 2023CWE-20EPSS 4.52%

Overview

CVE-2023-34448 is a high-severity vulnerability. It was published on June 14, 2023 and has a CVSS 3.1 base score of 8.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

Grav is a flat-file content management system. Prior to version 1.7.42, the patch for CVE-2022-2073, a server-side template injection vulnerability in Grav leveraging the default `filter()` function, did not block other built-in functions exposed by Twig's Core Extension that could be used to invoke arbitrary unsafe functions, thereby allowing for remote code execution. A patch in version 1.74.2 overrides the built-in Twig `map()` and `reduce()` filter functions in `system/src/Grav/Common/Twig/Extension/GravExtension.php` to validate the argument passed to the filter in `$arrow`.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/getgrav/grav/commit/8c2c1cb72611a399f13423fc6d0e1d998c03e5c8GitHubgithub.com/getgrav/grav/security/advisories/GHSA-whr7-m3f8-mpm8GitHubgithub.com/twigphp/Twig/blob/v1.44.7/src/Environment.php#L148Refhuntr.dev/bounties/3ef640e6-9e25-4ecb-8ec1-64311d63fe66/GitHubwww.github.com/getgrav/grav/commit/9d6a2dba09fd4e56f5cdfb9a399caea355bfeb83GitHubgithub.com/getgrav/grav/commit/8c2c1cb72611a399f13423fc6d0e1d998c03e5c8GitHubgithub.com/getgrav/grav/security/advisories/GHSA-whr7-m3f8-mpm8GitHubgithub.com/twigphp/Twig/blob/v1.44.7/src/Environment.php#L148Refhuntr.dev/bounties/3ef640e6-9e25-4ecb-8ec1-64311d63fe66/GitHubwww.github.com/getgrav/grav/commit/9d6a2dba09fd4e56f5cdfb9a399caea355bfeb83

How CyberStrike helps

Frequently asked questions

What is CVE-2023-34448?

CVE-2023-34448 is a high-severity vulnerability. It was published on June 14, 2023 and has a CVSS 3.1 base score of 8.8 (HIGH).

How severe is CVE-2023-34448?

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2023-34448?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2023-34448?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-34448 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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