High severity · published Mar 1, 2024
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…
7.5
CVSS
0.7%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 53% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OP
Openbsd · Openbsd
before 7.3; 7.3; 7.3; 7.3; 7.3; 7.3; +16 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-52558
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-52558
Patch
https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/019_msplit.patch.sig
Patch
https://ftp.openbsd.org/pub/OpenBSD/patches/7.4/common/002_msplit.patch.sig
Patch
https://github.com/openbsd/src/commit/7b4d35e0a60ba1dd4daf4b1c2932020a22463a89
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