CVE-2023-0286
There is a type confusion vulnerability relating to X.400 address processing inside an X.509 GeneralName.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 59.5%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
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 3.1
- 7.4 HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H
- EPSS
- 59.50% probability · 99th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-843
- Affected
- openssl/openssl · stormshield/stormshield management center · stormshield/stormshield network security
- Source
- openssl-security@openssl.org
References
- https://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-3.6.2-relnotes.txtThird Party Advisory
- https://ftp.openbsd.org/pub/OpenBSD/patches/7.2/common/018_x509.patch.sigThird Party Advisory
- https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=2c6c9d439b484e1ba9830d8454a34fa4f80fdfe9Patch, Vendor Advisory
- https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=2f7530077e0ef79d98718138716bc51ca0cad658Patch, Vendor Advisory
- https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=fd2af07dc083a350c959147097003a14a5e8ac4dPatch, Vendor Advisory
- https://security.gentoo.org/glsa/202402-08
- https://www.openssl.org/news/secadv/20230207.txtVendor Advisory
- https://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-3.6.2-relnotes.txtThird Party Advisory
- https://ftp.openbsd.org/pub/OpenBSD/patches/7.2/common/018_x509.patch.sigThird Party Advisory
- https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=2c6c9d439b484e1ba9830d8454a34fa4f80fdfe9Patch, Vendor Advisory
- https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=2f7530077e0ef79d98718138716bc51ca0cad658Patch, Vendor Advisory
- https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=fd2af07dc083a350c959147097003a14a5e8ac4dPatch, Vendor Advisory
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2023-0003
- https://security.gentoo.org/glsa/202402-08
- https://www.openssl.org/news/secadv/20230207.txtVendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.