Medium severity · published Aug 10, 2023
CVE-2023-40216
OpenBSD 7.3 before errata 014 is missing an argument-count bounds check in console terminal emulation
5.5
CVSS
0.1%
EPSS
No
On KEV
Description
OpenBSD 7.3 before errata 014 is missing an argument-count bounds check in console terminal emulation. This could cause incorrect memory access and a kernel crash after receiving crafted DCS or CSI terminal escape sequences.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 4% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OP
Openbsd · Openbsd
7.3; 7.3; 7.3; 7.3; 7.3; 7.3; +8 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-40216
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-40216
Patch
https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/014_wscons.patch.sig
Patch
https://github.com/openbsd/src/commit/9d3f688f46eba347e96ff0ae9506ef2061622e0c
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