CVE-2019-9792 (GCVE-0-2019-9792)
Vulnerability from cvelistv5 – Published: 2019-04-26 16:13 – Updated: 2024-08-04 22:01
VLAI
EPSS
VEX
Summary
The IonMonkey just-in-time (JIT) compiler can leak an internal JS_OPTIMIZED_OUT magic value to the running script during a bailout. This magic value can then be used by JavaScript to achieve memory corruption, which results in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.6, Firefox ESR < 60.6, and Firefox < 66.
Severity
9.8 (Critical)
CWE
- IonMonkey leaks JS_OPTIMIZED_OUT magic value to script
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://www.mozilla.org/security/advisories/mfsa2… | x_refsource_MISC |
| https://www.mozilla.org/security/advisories/mfsa2… | x_refsource_MISC |
| https://www.mozilla.org/security/advisories/mfsa2… | x_refsource_MISC |
| https://bugzilla.mozilla.org/show_bug.cgi?id=1532599 | x_refsource_MISC |
| https://access.redhat.com/errata/RHSA-2019:0966 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2019:1144 | vendor-advisoryx_refsource_REDHAT |
| http://packetstormsecurity.com/files/153106/Spide… | x_refsource_MISC |
Impacted products
3 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Mozilla | Thunderbird |
Affected:
unspecified , < 60.6
(custom)
|
guessed | |
| Mozilla | Firefox ESR |
Affected:
unspecified , < 60.6
(custom)
|
guessed | |
| Mozilla | Firefox |
Affected:
unspecified , < 66
(custom)
|
guessed |
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Advisory\"]},{\"url\":\"https://www.mozilla.org/security/advisories/mfsa2019-08/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://www.mozilla.org/security/advisories/mfsa2019-11/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\"]}]}}",
"redhat_vex": {
"aggregate_severity": "Critical",
"current_release_date": "2026-06-26T22:54:24+00:00",
"cve": "CVE-2019-9792",
"id": "CVE-2019-9792",
"initial_release_date": "2019-03-20T00:00:00+00:00",
"product_status:fixed": "113",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "Mozilla: IonMonkey leaks JS_OPTIMIZED_OUT magic value to script",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2019/cve-2019-9792.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "important",
"current_release_date": "2026-08-31T02:41:30Z",
"cve": "CVE-2019-9792",
"id": "CVE-2019-9792",
"initial_release_date": "2023-02-15T04:14:16Z",
"product_status:known_affected": "24",
"product_status:known_not_affected": "87",
"product_status:recommended": "380",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2019-9792",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2019-9792.json",
"version": "25"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
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.
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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.
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.
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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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