CVE-2023-52558: openbsd — Fix

Description

In OpenBSD 7.4 before errata 002 and OpenBSD 7.3 before errata 019, a network buffer that had to be split at certain length that could crash the kernel after receiving specially crafted escape sequences.

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CVSS v3.1 Score

7.5

HIGH

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

Weakness Type (CWE)

CWE-131 CWE-131

Affected Products

Vendor	Product	Versions
openbsd	openbsd	< 7.3
openbsd	openbsd	All
openbsd	openbsd	All
openbsd	openbsd	All
openbsd	openbsd	All
openbsd	openbsd	All
openbsd	openbsd	All
openbsd	openbsd	All
openbsd	openbsd	All
openbsd	openbsd	All
openbsd	openbsd	All
openbsd	openbsd	All
openbsd	openbsd	All
openbsd	openbsd	All
openbsd	openbsd	All
openbsd	openbsd	All
openbsd	openbsd	All
openbsd	openbsd	All
openbsd	openbsd	All
openbsd	openbsd	All
openbsd	openbsd	All
openbsd	openbsd	All

References

Advisories & Patches

https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/019_msplit.patch.sig https://ftp.openbsd.org/pub/OpenBSD/patches/7.4/common/002_msplit.patch.sig https://github.com/openbsd/src/commit/7b4d35e0a60ba1dd4daf4b1c2932020a22463a89 https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/019_msplit.patch.sig https://ftp.openbsd.org/pub/OpenBSD/patches/7.4/common/002_msplit.patch.sig https://github.com/openbsd/src/commit/7b4d35e0a60ba1dd4daf4b1c2932020a22463a89

Frequently Asked Questions

What is CVE-2023-52558? +

In OpenBSD 7.4 before errata 002 and OpenBSD 7.3 before errata 019, a network buffer that had to be split at certain length that could crash the kernel after receiving specially crafted escape sequences. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2023-52558? +

CVE-2023-52558 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2023-52558? +

CVE-2023-52558 affects products from openbsd, specifically: openbsd. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2023-52558? +

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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