CVE-2023-0286 (High) detected in cryptography-2.8-cp27-cp27mu-manylinux1_x86_64.whl

[mend-for-github-com]

CVE-2023-0286 - High Severity Vulnerability

Vulnerable Library - cryptography-2.8-cp27-cp27mu-manylinux1_x86_64.whl

cryptography is a package which provides cryptographic recipes and primitives to Python developers.

Library home page: https://files.pythonhosted.org/packages/e2/67/4597fc5d5de01bb44887844647ab8e73239079dd478c35c52d58a9eb3d45/cryptography-2.8-cp27-cp27mu-manylinux1_x86_64.whl

Path to dependency file: /requirements.txt

Path to vulnerable library: /requirements.txt

Dependency Hierarchy:

• ❌ cryptography-2.8-cp27-cp27mu-manylinux1_x86_64.whl (Vulnerable Library)

Vulnerability Details

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.

Publish Date: 2023-02-08

URL: CVE-2023-0286

CVSS 3 Score Details (7.4)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Network
  • Attack Complexity: High
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
• Impact Metrics:
  • Confidentiality Impact: High
  • Integrity Impact: None
  • Availability Impact: High

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: https://www.openssl.org/news/vulnerabilities.html

Release Date: 2023-02-08

Fix Resolution: openssl-3.0.8

---

• Check this box to open an automated fix PR