Vulnerability-Lookup

SUSE-SU-2023:1767-1

Vulnerability from csaf_suse - Published: 2023-04-05 08:05 - Updated: 2026-09-20 15:01

Summary

Security update for python-cryptography

Severity

Moderate

Notes

Title of the patch: Security update for python-cryptography

Description of the patch: This update for python-cryptography fixes the following issues: - CVE-2023-23931: Fixed memory corruption in Cipher.update_into (bsc#1208036).

Patchnames: SUSE-2023-1767,SUSE-SLE-SERVER-12-SP5-2023-1767

CVE-2023-23931

4 (Medium)


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

Affected products

Recommended 24 products

Product	Version	Remediation
Unresolved product id: SUSE Linux Enterprise High Performance Computing 12 SP5:python-cryptography-0:2.8-7.40.1.aarch64	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise High Performance Computing 12 SP5:python-cryptography-0:2.8-7.40.1.ppc64le	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise High Performance Computing 12 SP5:python-cryptography-0:2.8-7.40.1.s390x	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise High Performance Computing 12 SP5:python-cryptography-0:2.8-7.40.1.x86_64	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise High Performance Computing 12 SP5:python3-cryptography-0:2.8-7.40.1.aarch64	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise High Performance Computing 12 SP5:python3-cryptography-0:2.8-7.40.1.ppc64le	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise High Performance Computing 12 SP5:python3-cryptography-0:2.8-7.40.1.s390x	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise High Performance Computing 12 SP5:python3-cryptography-0:2.8-7.40.1.x86_64	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server 12 SP5:python-cryptography-0:2.8-7.40.1.aarch64	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server 12 SP5:python-cryptography-0:2.8-7.40.1.ppc64le	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server 12 SP5:python-cryptography-0:2.8-7.40.1.s390x	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server 12 SP5:python-cryptography-0:2.8-7.40.1.x86_64	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server 12 SP5:python3-cryptography-0:2.8-7.40.1.aarch64	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server 12 SP5:python3-cryptography-0:2.8-7.40.1.ppc64le	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server 12 SP5:python3-cryptography-0:2.8-7.40.1.s390x	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server 12 SP5:python3-cryptography-0:2.8-7.40.1.x86_64	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server for SAP Applications 12 SP5:python-cryptography-0:2.8-7.40.1.aarch64	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server for SAP Applications 12 SP5:python-cryptography-0:2.8-7.40.1.ppc64le	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server for SAP Applications 12 SP5:python-cryptography-0:2.8-7.40.1.s390x	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server for SAP Applications 12 SP5:python-cryptography-0:2.8-7.40.1.x86_64	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server for SAP Applications 12 SP5:python3-cryptography-0:2.8-7.40.1.aarch64	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server for SAP Applications 12 SP5:python3-cryptography-0:2.8-7.40.1.ppc64le	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server for SAP Applications 12 SP5:python3-cryptography-0:2.8-7.40.1.s390x	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server for SAP Applications 12 SP5:python3-cryptography-0:2.8-7.40.1.x86_64	—	Vendor Fix

Threats

Impact moderate

References

8 references

URL	Category
https://www.suse.com/support/security/rating/	external
https://ftp.suse.com/pub/projects/security/csaf/s…	self
https://www.suse.com/support/update/announcement/…	self
https://lists.suse.com/pipermail/sle-updates/2023…	self
https://bugzilla.suse.com/1208036	self
https://www.suse.com/security/cve/CVE-2023-23931/	self
https://www.suse.com/security/cve/CVE-2023-23931	external
https://bugzilla.suse.com/1208036	external

JSON

To clipboard

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      "threats": [
        {
          "category": "impact",
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          "details": "moderate"
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      ],
      "title": "CVE-2023-23931"
    }
  ]
}

CVE-2023-23931 (GCVE-0-2023-23931)

Vulnerability from cvelistv5 – Published: 2023-02-07 20:54 – Updated: 2025-11-03 21:47

Title

Cipher.update_into can corrupt memory in pyca cryptography

Summary

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.

Severity

4.8 (Medium)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-03-10 21:01 UTC

CWE

CWE-754 - Improper Check for Unusual or Exceptional Conditions

Assigner

GitHub_M CNA under the mitre root

CNA scorecard C 72/100 over 7670 records in the last 180 days details

References

4 references

URL	Tags
https://github.com/pyca/cryptography/security/adv…	x_refsource_CONFIRM
https://github.com/pyca/cryptography/pull/8230/co…	x_refsource_MISC
https://security.netapp.com/advisory/ntap-2023032…
https://lists.debian.org/debian-lts-announce/2024…

Impacted products

1 product

Vendor	Product	Version
pyca	cryptography	Affected: >=1.8, < 39.0.1

Show details on NVD website

JSON

To clipboard

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                "id": "CVE-2023-23931",
                "options": [
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      "metrics": [
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            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 4.8,
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            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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Publication & reservation Sightings KEV catalogs Other timestamps

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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