Memory Access Vulnerability in OpenBSD Console Terminal Emulation
CVE-2023-40216

5.5MEDIUM

Key Information:

Vendor

OpenBSD
Status
OpenBSD
Vendor
CVE Published:
10 August 2023

What is CVE-2023-40216?

OpenBSD 7.3 prior to errata 014 features a flaw in its console terminal emulation that lacks proper argument-count bounds checking. This oversight allows for incorrect memory access when the system processes specially crafted DCS or CSI terminal escape sequences. Such a vulnerability can result in unexpected kernel behavior, potentially leading to system crashes and disruptions.

References

https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/01...
https://github.com/openbsd/src/commit/9d3f688f46eba347e96...

CVSS V3.1

Score:
5.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.
CVE-2023-40216 : Memory Access Vulnerability in OpenBSD Console Terminal Emulation