CVE-2021-29945 (GCVE-0-2021-29945)

Vulnerability from cvelistv5 – Published: 2021-06-24 13:19 – Updated: 2024-08-03 22:18
VLAI?
Summary
The WebAssembly JIT could miscalculate the size of a return type, which could lead to a null read and result in a crash. *Note: This issue only affected x86-32 platforms. Other platforms are unaffected.*. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.
Severity ?
No CVSS data available.
CWE
  • Incorrect size computation in WebAssembly JIT could lead to null-reads
Assigner
References
Impacted products
Vendor Product Version
Mozilla Firefox ESR Affected: unspecified , < 78.10 (custom)
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Mozilla Thunderbird Affected: unspecified , < 78.10 (custom)
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Mozilla Firefox Affected: unspecified , < 88 (custom)
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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.