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CVE-2023-23931

Cipher.update_into can corrupt memory in pyca cryptography

Published: Feb 7, 2023Updated: Nov 3, 2025 Sources: CVE List NVD GHSA BDU csafCWE-754
NVD MITRE
4.8CVSSMEDIUM
EPSS Score
1.3%
Top 33.3%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
Patch Available

Description

SCALANCE XCM-/XRM-300 before V2.4 is affected by multiple vulnerabilities. Siemens has released an update for SCALANCE X-300 and recommends to update to the latest version.

CVSS Vector Breakdown

AV:NAC:HPR:NUI:NS:UC:NI:LA:L
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:LIntegrity
Low
A:LAvailability
Low
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Weaknesses

CWE-754

Affected Products

cryptographypyca
Library
OSS Libraries / pypi
cryptographycryptography.io
Library
OSS Libraries / pypi
cryptographyPyPIOSS Libraries
Suse Linux Enterprise DesktopNovell Inc.
On-premOS
Operating Systems / linux-distro
SUSE Linux Enterprise Server for SAP ApplicationsNovell Inc.
On-premOS
Operating Systems / linux-distro
pycaoss-projectGBOSS Librariesaka pyca/cryptography, py ca, pyca
cryptography.iooss-projectOSS Librariesaka cryptography
pypipackage-ecosystemOSS Libraries
novell inc.commercialUSOperating Systems
and 22 more affected products View all →

Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

References

https://cert-portal.siemens.com/productcert/csaf/ssa-806742.json
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/html/ssa-806742.html
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/pdf/ssa-806742.pdf
cert-portal.siemens.com
and 37 more references View all →

Timeline

Published
Feb 7, 2023
Last Updated
Nov 3, 2025

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