CVE-2023-0286

HIGH
Published Feb 8, 20233y ago · Modified Jun 17, 20262w ago
7.4 CVSS 3.1
High
Find Similar
Published Feb 8, 2023 3y ago
Last Modified Jun 17, 2026 2w ago

Description

There is a type confusion vulnerability relating to X.400 address processing inside an X.509 GeneralName. X.400 addresses were parsed as an ASN1_STRING but the public structure definition for GENERAL_NAME incorrectly specified the type of the x400Address field as ASN1_TYPE. This field is subsequently interpreted by the OpenSSL function GENERAL_NAME_cmp as an ASN1_TYPE rather than an ASN1_STRING. When CRL checking is enabled (i.e. the application sets the X509_V_FLAG_CRL_CHECK flag), this vulnerability may allow an attacker to pass arbitrary pointers to a memcmp call, enabling them to read memory contents or enact a denial of service. In most cases, the attack requires the attacker to provide both the certificate chain and CRL, neither of which need to have a valid signature. If the attacker only controls one of these inputs, the other input must already contain an X.400 address as a CRL distribution point, which is uncommon. As such, this vulnerability is most likely to only affect applications which have implemented their own functionality for retrieving CRLs over a network.

CVSS Details

Base Score
7.4
Exploitability
2.2
Impact
5.2
Vector string
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity None
Availability High

Threat Intelligence

No active exploitation signals — not in CISA KEV and no EPSS score yet.

Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-843

Affected Products 9

VendorProductVersionRange
opensslopenssl*≥1.0.2  –  <1.0.2zg
opensslopenssl*≥1.1.1  –  <1.1.1t
opensslopenssl*≥3.0.0  –  <3.0.8
stormshieldstormshield_management_center* <3.3.3
stormshieldstormshield_network_security*≥2.7.0  –  <2.7.11
stormshieldstormshield_network_security*≥2.8.0  –  <3.7.34
stormshieldstormshield_network_security*≥3.8.0  –  <3.11.22
stormshieldstormshield_network_security*≥4.0.0  –  <4.3.16
stormshieldstormshield_network_security*≥4.4.0  –  <4.6.3

References 8

  • ftp.openbsd.org https://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-3.6.2-relnotes.txt
    Third Party Advisory
  • ftp.openbsd.org https://ftp.openbsd.org/pub/OpenBSD/patches/7.2/common/018_x509.patch.sig
    Third Party Advisory
  • git.openssl.org https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=2c6c9d439b484e1ba9830d8454a34fa4f80fdfe9
    PatchVendor Advisory
  • git.openssl.org https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=2f7530077e0ef79d98718138716bc51ca0cad658
    PatchVendor Advisory
  • git.openssl.org https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=fd2af07dc083a350c959147097003a14a5e8ac4d
    PatchVendor Advisory
  • psirt.global.sonicwall.com https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2023-0003
  • security.gentoo.org https://security.gentoo.org/glsa/202402-08
  • openssl.org https://www.openssl.org/news/secadv/20230207.txt
    Vendor Advisory

Remediation

  • git.openssl.org https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=2c6c9d439b484e1ba9830d8454a34fa4f80fdfe9
    PatchVendor Advisory
  • git.openssl.org https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=2f7530077e0ef79d98718138716bc51ca0cad658
    PatchVendor Advisory
  • git.openssl.org https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=fd2af07dc083a350c959147097003a14a5e8ac4d
    PatchVendor Advisory