CVE-2023-23931

cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. In affected versions `Cipher.update_into` would accept Python objects which implement the buffer protocol, but provide only immutable buffers. This would allow immutable objects (such as `bytes`) to be mutated, thus violating fundamental rules of Python and resulting in corrupted output. This now correctly raises an exception. This issue has been present since `update_into` was originally introduced in cryptography 1.8.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/pyca/cryptography/pull/8230/commits/94a50a9731f35405f0357fa5f3b177d46a726ab3	Patch
https://github.com/pyca/cryptography/security/advisories/GHSA-w7pp-m8wf-vj6r	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:cryptography.io:cryptography:*:*:*:*:*:python:*:*

History

05 Sep 2024, 16:09

Type	Values Removed	Values Added
CPE	cpe:2.3:a:cryptography_project:cryptography::::::python::*	cpe:2.3:a:cryptography.io:cryptography::::::python::*
First Time		Cryptography.io cryptography Cryptography.io

Information

Published : 2023-02-07 21:15

Updated : 2024-09-05 16:09

NVD link : CVE-2023-23931

Mitre link : CVE-2023-23931

CVE.ORG link : CVE-2023-23931

JSON object : View

Products Affected

cryptography.io

cryptography

CWE

CWE-754

Improper Check for Unusual or Exceptional Conditions

{"id": "CVE-2023-23931", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 2.5, "exploitabilityScore": 3.9}, {"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.8, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 2.5, "exploitabilityScore": 2.2}]}, "published": "2023-02-07T21:15:09.850", "references": [{"url": "https://github.com/pyca/cryptography/pull/8230/commits/94a50a9731f35405f0357fa5f3b177d46a726ab3", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/pyca/cryptography/security/advisories/GHSA-w7pp-m8wf-vj6r", "tags": ["Exploit", "Vendor Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-754"}]}], "descriptions": [{"lang": "en", "value": "cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. In affected versions `Cipher.update_into` would accept Python objects which implement the buffer protocol, but provide only immutable buffers. This would allow immutable objects (such as `bytes`) to be mutated, thus violating fundamental rules of Python and resulting in corrupted output. This now correctly raises an exception. This issue has been present since `update_into` was originally introduced in cryptography 1.8."}], "lastModified": "2024-09-05T16:09:10.430", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:cryptography.io:cryptography:*:*:*:*:*:python:*:*", "vulnerable": true, "matchCriteriaId": "D620CB15-986D-4955-BCE9-5CC459F01289", "versionEndExcluding": "39.0.1", "versionStartIncluding": "1.8"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}