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CVE-2023-40589 (GCVE-0-2023-40589)

Vulnerability from cvelistv5 – Published: 2023-08-31 18:31 – Updated: 2025-11-03 20:35
VLAI
Title
FreeRDP Global-Buffer-Overflow in ncrush_decompress
Summary
FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. In affected versions there is a Global-Buffer-Overflow in the ncrush_decompress function. Feeding crafted input into this function can trigger the overflow which has only been shown to cause a crash. This issue has been addressed in versions 2.11.0 and 3.0.0-beta3. Users are advised to upgrade. There are no known workarounds for this issue.
Severity
4.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
CWE
  • CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Assigner
References
Impacted products
Vendor Product Version CPE status
FreeRDP FreeRDP Affected: < 2.11.0
Affected: >= 3.0.0-beta1, < 3.0.0-beta3
guessed Create a notification for this product.
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      "initial_release_date": "2023-08-31T00:00:00+00:00",
      "product_status:fixed": "90",
      "product_status:known_affected": "18",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "freerdp: buffer overflow in ncrush_decompress causes crash with crafted input",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-40589.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-26T01:53:05Z",
      "cve": "CVE-2023-40589",
      "id": "CVE-2023-40589",
      "initial_release_date": "2023-09-02T01:54:38Z",
      "product_status:recommended": "169",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2023-40589",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2023-40589.json",
      "version": "23"
    }
  }
}



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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.


Detection rules are retrieved from Rulezet.


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.