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CVE-2024-26130

cryptography NULL pointer deference with pkcs12.serialize_key_and_certificates when called with a non-matching certificate and private key and an hmac_hash override

Published: Feb 21, 2024Updated: Feb 5, 2025 Sources: CVE List NVD GHSA BDUCWE-476
7.5HIGH
NVD MITRE
EPSS Score
0.8%
Top 45.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. Starting in version 38.0.0 and prior to version 42.0.4, if `pkcs12.serialize_key_and_certificates` is called with both a certificate whose public key did not match the provided private key and an `encryption_algorithm` with `hmac_hash` set (via `PrivateFormat.PKCS12.encryption_builder().hmac_hash(...)`, then a NULL pointer dereference would occur, crashing the Python process. This has been resolved in version 42.0.4, the first version in which a `ValueError` is properly raised.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-476

Affected Products

cryptography.io
oss-projectaka cryptography
cryptographyLibrary
OSS Libraries / pypi
PyPI
package-ecosystem
cryptography
OSS Libraries
ООО «Ред Софт»
commercial·RUaka red soft
РЕД ОСOn-premOS
Operating Systems / linux-distro
АО «ИВК»
commercial·RUaka ivk
АЛЬТ СП 10On-premOS
Operating Systems / linux-distro
Сообщество свободного программного обеспечения
oss-projectaka fsf
cryptographyLibraryLibrary
OSS Libraries / generic-library
pyca
oss-project·GBaka pyca/cryptography, py ca
cryptographyLibrary
OSS Libraries / pypi

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Impact
Initial Access
View detailed technique mapping

References

https://github.com/pyca/cryptography/commit/97d231672763cdb5959a3b191e692a362f1b9e55
github.com
https://github.com/pyca/cryptography/pull/10423
github.com
https://github.com/pyca/cryptography/security/advisories/GHSA-6vqw-3v5j-54x4
github.com
and 9 more references View all →

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