CVE-2023-49083

2023-11-2919:15:07

Debian Security Bug Tracker

security-tracker.debian.org

cryptography

vulnerability

pkcs7

null-pointer dereference

dos

python

patch

system

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

9.2 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

25.1%

JSON

cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. Calling load_pem_pkcs7_certificates or load_der_pkcs7_certificates could lead to a NULL-pointer dereference and segfault. Exploitation of this vulnerability poses a serious risk of Denial of Service (DoS) for any application attempting to deserialize a PKCS7 blob/certificate. The consequences extend to potential disruptions in system availability and stability. This vulnerability has been patched in version 41.0.6.

OSVersionArchitecturePackageVersionFilename
Debian12allpython-cryptography<= 38.0.4-3python-cryptography_38.0.4-3_all.deb
Debian11allpython-cryptography<= 3.3.2-1python-cryptography_3.3.2-1_all.deb
Debian10allpython-cryptography< 2.6.1-3+deb10u2python-cryptography_2.6.1-3+deb10u2_all.deb
Debian999allpython-cryptography<= 42.0.5-2python-cryptography_42.0.5-2_all.deb
Debian13allpython-cryptography<= 42.0.5-2python-cryptography_42.0.5-2_all.deb

OS	Version	Architecture	Package	Version	Filename
Debian	12	all	python-cryptography	<= 38.0.4-3	python-cryptography_38.0.4-3_all.deb
Debian	11	all	python-cryptography	<= 3.3.2-1	python-cryptography_3.3.2-1_all.deb
Debian	10	all	python-cryptography	< 2.6.1-3+deb10u2	python-cryptography_2.6.1-3+deb10u2_all.deb
Debian	999	all	python-cryptography	<= 42.0.5-2	python-cryptography_42.0.5-2_all.deb
Debian	13	all	python-cryptography	<= 42.0.5-2	python-cryptography_42.0.5-2_all.deb