PT-2023-27333 · Openbsd · Openbsd

David Leadbeater + 1 · Published 2023-08-10 · Updated 2023-08-23 · CVE-2023-40216

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions OpenBSD versions 7.3 before errata 014

Description The issue is related to a missing argument-count bounds check in console terminal emulation, which could cause incorrect memory access and a kernel crash after receiving crafted DCS or CSI terminal escape sequences.

Recommendations For OpenBSD version 7.3 before errata 014, apply errata 014 to resolve the issue. As a temporary workaround, consider restricting the use of console terminal emulation until the patch is applied.

Fix

Missing Authorization

Weakness Enumeration

CWE-862

Related Identifiers

CVE-2023-40216

Affected Products

Openbsd

References · 7

• https://github.com/openbsd/src/commit/9d3f688f46eba347e96ff0ae9506ef2061622e0c · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2023-40216 · Security Note
• https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/014_wscons.patch.sig · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2023-40216 · Vendor Advisory
• https://twitter.com/VulmonFeeds/status/1689710626677903361 · Twitter Post
• https://t.me/cibsecurity/68239 · Telegram Post
• https://t.me/cvenotify/56201 · Telegram Post