CVE-2024-21524: stringbuilder Out-of-bounds Read

Description

All versions of the package node-stringbuilder are vulnerable to Out-of-bounds Read due to incorrect memory length calculation, by calling ToBuffer, ToString, or CharAt on a StringBuilder object with a non-empty string value input. It's possible to return previously allocated memory, for example, by providing negative indexes, leading to an Information Disclosure.

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CVSS v3.1 Score

8.2

HIGH

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

Weakness Type (CWE)

CWE-125 Out-of-bounds Read

Affected Products

Vendor	Product	Versions
magiclen	stringbuilder	< 2.2.7

References

Exploits

https://gist.github.com/dellalibera/0bb022811224f81d998fa61c3175ee67 https://security.snyk.io/vuln/SNYK-JS-NODESTRINGBUILDER-6421617 https://gist.github.com/dellalibera/0bb022811224f81d998fa61c3175ee67 https://security.snyk.io/vuln/SNYK-JS-NODESTRINGBUILDER-6421617

Other References

https://github.com/magiclen/node-stringbuilder/blob/5c2797d3d6bf8cb6d10fe1e077609cef9a5a7de0/src/node-stringbuilder.c%23L1281 https://github.com/magiclen/node-stringbuilder/blob/5c2797d3d6bf8cb6d10fe1e077609cef9a5a7de0/src/node-stringbuilder.c%23L1281

Frequently Asked Questions

What is CVE-2024-21524? +

All versions of the package node-stringbuilder are vulnerable to Out-of-bounds Read due to incorrect memory length calculation, by calling ToBuffer, ToString, or CharAt on a StringBuilder object with a non-empty string value input. It's possible to return previously allocated memory, for example, by providing negative indexes, leading to an Information Disclosure. It has a CVSS v3.1 base score of 8.2 (HIGH).

How severe is CVE-2024-21524? +

CVE-2024-21524 has a CVSS v3.1 score of 8.2 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-21524? +

CVE-2024-21524 affects products from magiclen, specifically: stringbuilder. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-21524? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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