Medium severity · published Apr 12, 2023
CVE-2022-48437
An issue was discovered in x509/x509_verify.c in LibreSSL before 3.6.1, and in OpenBSD before 7.2 errata 001
5.3
CVSS
0.4%
EPSS
No
On KEV
Description
An issue was discovered in x509/x509_verify.c in LibreSSL before 3.6.1, and in OpenBSD before 7.2 errata 001. x509_verify_ctx_add_chain does not store errors that occur during leaf certificate verification, and therefore an incorrect error is returned. This behavior occurs when there is an installed verification callback that instructs the verifier to continue upon detecting an invalid certificate.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 30% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LI
Libressl · Openbsd
before 3.6.1 · source: NVD
OP
Openbsd · Openbsd
before 7.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-48437
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-48437
Patch
https://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-3.6.1-relnotes.txt
Patch
https://ftp.openbsd.org/pub/OpenBSD/patches/7.2/common/001_x509.patch.sig
Patch
https://github.com/openbsd/src/commit/4f94258c65a918ee3d8670e93916d15bf879e6ec
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