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
CVE-2023-0286 - High Severity Vulnerability
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:
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
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.Type: Upgrade version
Origin: https://www.openssl.org/news/vulnerabilities.html
Release Date: 2023-02-08
Fix Resolution: openssl-3.0.8