High severity · published Nov 29, 2023
CVE-2023-49083
cryptography is a package designed to expose cryptographic primitives and recipes to Python developers
7.5
CVSS
1%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.0% · higher than 62% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CR
Cryptography · Cryptography.io
3.1 before 41.0.6 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-49083
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-49083
Patch
https://github.com/pyca/cryptography/commit/f09c261ca10a31fe41b1262306db7f8f1da0e48a
Issue Tracking
https://github.com/pyca/cryptography/pull/9926
Exploit
https://github.com/pyca/cryptography/security/advisories/GHSA-jfhm-5ghh-2f97
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QMNTYMUGFJSDBYBU22FUYBHFRZODRKXV/
lists.debian.org
https://lists.debian.org/debian-lts-announce/2024/10/msg00012.html
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