7.5
HIGH
CVE-2023-0401
OpenSSL PKCS7 NULL Pointer Dereference Vulnerability
Description

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.

INFO

Published Date :

Feb. 8, 2023, 8:15 p.m.

Last Modified :

Feb. 4, 2024, 9:15 a.m.

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

3.9
Public PoC/Exploit Available at Github

CVE-2023-0401 has a 4 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2023-0401 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Openssl openssl
1 Stormshield stormshield_management_center
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2023-0401.

URL Resource
https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=d3b6dfd70db844c4499bec6ad6601623a565e674 Patch Vendor Advisory
https://security.gentoo.org/glsa/202402-08
https://www.openssl.org/news/secadv/20230207.txt Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

None

Shell Dockerfile

Updated: 1 year, 6 months ago
0 stars 0 fork 0 watcher
Born at : April 9, 2023, 11:49 a.m. This repo has been linked 27 different CVEs too.

None

Updated: 1 month, 4 weeks ago
5 stars 0 fork 0 watcher
Born at : Feb. 23, 2023, 5:42 a.m. This repo has been linked 455 different CVEs too.

None

Updated: 2 years, 5 months ago
0 stars 0 fork 0 watcher
Born at : June 4, 2022, 7:01 a.m. This repo has been linked 8 different CVEs too.

Base container images for DAWE DMZ Migration Project

Dockerfile Shell

Updated: 2 years, 4 months ago
0 stars 0 fork 0 watcher
Born at : May 27, 2022, 3:25 a.m. This repo has been linked 27 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2023-0401 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2023-0401 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Feb. 04, 2024

    Action Type Old Value New Value
    Added Reference OpenSSL Software Foundation https://security.gentoo.org/glsa/202402-08 [No types assigned]
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Changed Description 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. 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.
  • Modified Analysis by [email protected]

    Jul. 19, 2023

    Action Type Old Value New Value
    Changed Reference Type https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=d3b6dfd70db844c4499bec6ad6601623a565e674 No Types Assigned https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=d3b6dfd70db844c4499bec6ad6601623a565e674 Patch, Vendor Advisory
    Added CPE Configuration OR *cpe:2.3:a:stormshield:stormshield_management_center:*:*:*:*:*:*:*:* versions up to (excluding) 3.3.3
  • CVE Modified by [email protected]

    Feb. 24, 2023

    Action Type Old Value New Value
    Added Reference https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=d3b6dfd70db844c4499bec6ad6601623a565e674 [No Types Assigned]
  • Initial Analysis by [email protected]

    Feb. 18, 2023

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Changed Reference Type https://www.openssl.org/news/secadv/20230207.txt No Types Assigned https://www.openssl.org/news/secadv/20230207.txt Vendor Advisory
    Added CWE NIST CWE-476
    Added CPE Configuration OR *cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:* versions from (including) 3.0.0 up to (including) 3.0.7
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2023-0401 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2023-0401 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.53 }} 0.07%

score

0.77365

percentile

CVSS31 - Vulnerability Scoring System
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