CVE-2024-26317: Weak Crypto (CVSS 6.1)

Description

In illumos illumos-gate 2024-02-15, an error occurs in the elliptic curve point addition algorithm that uses mixed Jacobian-affine coordinates, causing the algorithm to yield a result of POINT_AT_INFINITY when it should not. A man-in-the-middle attacker could use this to interfere with a connection, resulting in an attacked party computing an incorrect shared secret.

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CVSS v3.1 Score

6.1

MEDIUM

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

Weakness Type (CWE)

CWE-327 CWE-327

References

Other References

https://drive.google.com/file/d/1aGLAFz20-fc7ZLiWouegyK_65jCkGTDb/view?usp=sharing https://github.com/illumos/illumos-gate https://rashidkhanpathan.github.io/posts/CVE-2024-26317-Elliptic-curve-point-addition-error/

Frequently Asked Questions

What is CVE-2024-26317? +

In illumos illumos-gate 2024-02-15, an error occurs in the elliptic curve point addition algorithm that uses mixed Jacobian-affine coordinates, causing the algorithm to yield a result of POINT_AT_INFINITY when it should not. A man-in-the-middle attacker could use this to interfere with a connection, resulting in an attacked party computing an incorrect shared secret. It has a CVSS v3.1 base score of 6.1 (MEDIUM).

How severe is CVE-2024-26317? +

CVE-2024-26317 has a CVSS v3.1 score of 6.1 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

How do I check if I'm vulnerable to CVE-2024-26317? +

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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