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CVE-2023-0401

Published: 7 February 2023

A NULL pointer can be dereferenced when signatures are being verified on PKCS7 signed or signedAndEnveloped data. In case the hash algorithm used for the signature is known to the OpenSSL library but the implementation of the hash algorithm is not available the digest initialization will fail. There is a missing check for the return value from the initialization function which later leads to invalid usage of the digest API most likely leading to a crash. The unavailability of an algorithm can be caused by using FIPS enabled configuration of providers or more commonly by not loading the legacy provider. PKCS7 data is processed by the SMIME library calls and also by the time stamp (TS) library calls. The TLS implementation in OpenSSL does not call these functions however third party applications would be affected if they call these functions to verify signatures on untrusted data.

Notes

AuthorNote
mdeslaur
3.x only

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
edk2
Launchpad, Ubuntu, Debian
trusty Ignored
(end of standard support)
upstream Needs triage

bionic Not vulnerable
(code not present)
focal Not vulnerable
(code not present)
jammy Not vulnerable
(code not present)
kinetic Not vulnerable
(code not present)
xenial Not vulnerable
(code not present)
lunar Not vulnerable
(code not present)
mantic Not vulnerable
(code not present)
nodejs
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(uses system openssl1.0)
focal Not vulnerable
(uses system openssl)
kinetic Not vulnerable
(uses system openssl)
trusty Not vulnerable
(uses system openssl)
upstream Needs triage

lunar Not vulnerable
(uses system openssl)
mantic Not vulnerable
(uses system openssl)
xenial Not vulnerable
(code not present)
jammy
Released (12.22.9~dfsg-1ubuntu3.3)
openssl
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(3.x only)
focal Not vulnerable
(3.x only)
trusty Not vulnerable
(3.x only)
upstream
Released (3.0.8)
xenial Not vulnerable
(3.x only)
jammy
Released (3.0.2-0ubuntu1.8)
kinetic
Released (3.0.5-2ubuntu2.1)
lunar
Released (3.0.8-1ubuntu1)
mantic
Released (3.0.8-1ubuntu1)
openssl1.0
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(3.x only)
focal Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H