CVE-2023-239314.8MediumCWE-754

CVE-2023-23931: Cipher.update_into can corrupt memory in pyca cryptography

pyca · cryptography

Affected: pyca cryptography · Exploitation: possible (1 to 10%)

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

1.3%probability of exploitation in the next 30 days

70th percentile

050100

Higher than 70% of scored CVEs

4.8MediumCVSS 3.1

LowMediumHighCrit.

DescriptionCVE.org

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.

Affected products1

From the CVE record. A product or version that is not listed is unknown, not unaffected.

pyca · cryptography>=1.8, < 39.0.1

On the Atlas

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Exploitation: Possible (1 to 10%). EPSS between 1% and 10%.
CISA KEV: Not listed
Public check: No public nuclei template
Weakness: Improper Check for Unusual or Exceptional Conditions · Input Validation and Logic
Vendor: pyca
Published: February 2023
Band: Possible (1 to 10%), February 2023

CoverageNo articles yet

No CyberSIXT article names CVE-2023-23931 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.