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CVE-2021-30831 (GCVE-0-2021-30831)

Vulnerability from cvelistv5 – Published: 2021-10-28 18:17 – Updated: 2024-08-03 22:48
VLAI
Summary
An out-of-bounds read was addressed with improved input validation. This issue is fixed in tvOS 15, watchOS 8, iOS 15 and iPadOS 15. Processing a maliciously crafted font may result in the disclosure of process memory.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CWE
  • Processing a maliciously crafted font may result in the disclosure of process memory
Assigner
References
Impacted products
Vendor Product Version CPE status
Apple iOS and iPadOS Affected: unspecified , < 15 (custom)
guessed Create a notification for this product.
Apple tvOS Affected: unspecified , < 15 (custom)
guessed Create a notification for this product.
Apple watchOS Affected: unspecified , < 8 (custom)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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    "redhat_vex": {
      "current_release_date": "2026-03-27T14:10:52+00:00",
      "cve": "CVE-2021-30831",
      "id": "CVE-2021-30831",
      "initial_release_date": "2021-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "CVE-2021-30831",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-30831.json",
      "version": "3"
    }
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}



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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.