Medium severity · published Mar 1, 2024
CVE-2023-52556
In OpenBSD 7.4 before errata 009, a race condition between pf(4)'s processing of packets and expiration of packet states may cause a kernel panic
6.2
CVSS
0.1%
EPSS
No
On KEV
Description
In OpenBSD 7.4 before errata 009, a race condition between pf(4)'s processing of packets and expiration of packet states may cause a kernel panic.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
None
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
before 7.4; 7.4; 7.4; 7.4; 7.4; 7.4; +4 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-52556
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-52556
Patch
https://ftp.openbsd.org/pub/OpenBSD/patches/7.4/common/009_pf.patch.sig
Patch
https://github.com/openbsd/src/commit/9d9f4dc6c833cb79d13f836581e3a781d06842e7
More from Openbsd
9.8
CVE-2024-10934
In OpenBSD 7.5 before errata 008 and OpenBSD 7.4 before errata 021, avoid possible mbuf double free in NFS client and server implementation, do not use uninitialized variable in…
9.8
CVE-2024-29937
NFS in a BSD derived codebase, as used in OpenBSD through 7.4 and FreeBSD through 14.0-RELEASE, allows remote attackers to execute arbitrary code via a bug that is unrelated to…
9.8
CVE-2023-35784
A double free or use after free could occur after SSL_clear in OpenBSD 7.2 before errata 026 and 7.3 before errata 004, and in LibreSSL before 3.6.3 and 3.7.x before 3.7.3
9.8
CVE-2021-46880
x509/x509_verify.c in LibreSSL before 3.4.2, and OpenBSD before 7.0 errata 006, allows authentication bypass because an error for an unverified certificate chain is sometimes…
9.8
CVE-2020-16088
iked in OpenIKED, as used in OpenBSD through 6.7, allows authentication bypass because ca.c has the wrong logic for checking whether a public key matches