OESA-2025-1378 (CVE-2021-29970)
Vulnerability from osv_openeuler – Published: 2025-04-03 11:08 – Updated: 2026-08-06 11:08 – Source websiteMozilla Firefox is an open-source web browser, designed for standards compliance, performance and portability.
Security Fix(es):
A malicious webpage could have triggered a use-after-free, memory corruption, and a potentially exploitable crash. This bug could only be triggered when accessibility was enabled.. This vulnerability affects Thunderbird < 78.12, Firefox ESR < 78.12, and Firefox < 90.(CVE-2021-29970)
Failure to correctly record the location of live pointers across wasm instance calls resulted in a GC occurring within the call not tracing those live pointers. This could have led to a use-after-free causing a potentially exploitable crash. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.(CVE-2021-43539)
In the <code>nsTArray_Impl::ReplaceElementsAt()</code> function, an integer overflow could have occurred when the number of elements to replace was too large for the container. This vulnerability affects Firefox < 102, Firefox ESR < 91.11, Thunderbird < 102, and Thunderbird < 91.11.(CVE-2022-34481)
| URL | Type | |
|---|---|---|
{
"affected": [
{
"ecosystem_specific": {
"aarch64": [
"firefox-79.0-34.oe2003sp4.aarch64.rpm",
"firefox-debuginfo-79.0-34.oe2003sp4.aarch64.rpm",
"firefox-debugsource-79.0-34.oe2003sp4.aarch64.rpm"
],
"src": [
"firefox-79.0-34.oe2003sp4.src.rpm"
],
"x86_64": [
"firefox-79.0-34.oe2003sp4.x86_64.rpm",
"firefox-debuginfo-79.0-34.oe2003sp4.x86_64.rpm",
"firefox-debugsource-79.0-34.oe2003sp4.x86_64.rpm",
"mozilla-crashreporter-firefox-debuginfo-79.0-34.oe2003sp4.x86_64.rpm"
]
},
"package": {
"ecosystem": "openEuler:20.03-LTS-SP4",
"name": "firefox",
"purl": "pkg:rpm/openEuler/firefox\u0026distro=openEuler-20.03-LTS-SP4"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "79.0-34.oe2003sp4"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"severity": "High"
},
"details": "Mozilla Firefox is an open-source web browser, designed for standards compliance, performance and portability.\r\n\r\nSecurity Fix(es):\n\nA malicious webpage could have triggered a use-after-free, memory corruption, and a potentially exploitable crash. *This bug could only be triggered when accessibility was enabled.*. This vulnerability affects Thunderbird \u0026lt; 78.12, Firefox ESR \u0026lt; 78.12, and Firefox \u0026lt; 90.(CVE-2021-29970)\n\nFailure to correctly record the location of live pointers across wasm instance calls resulted in a GC occurring within the call not tracing those live pointers. This could have led to a use-after-free causing a potentially exploitable crash. This vulnerability affects Thunderbird \u0026lt; 91.4.0, Firefox ESR \u0026lt; 91.4.0, and Firefox \u0026lt; 95.(CVE-2021-43539)\n\nIn the \u0026lt;code\u0026gt;nsTArray_Impl::ReplaceElementsAt()\u0026lt;/code\u0026gt; function, an integer overflow could have occurred when the number of elements to replace was too large for the container. This vulnerability affects Firefox \u0026lt; 102, Firefox ESR \u0026lt; 91.11, Thunderbird \u0026lt; 102, and Thunderbird \u0026lt; 91.11.(CVE-2022-34481)",
"id": "OESA-2025-1378",
"modified": "2026-08-06T11:08:28Z",
"published": "2025-04-03T11:08:28Z",
"references": [
{
"type": "ADVISORY",
"url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2025-1378"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-29970"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-43539"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-34481"
}
],
"schema_version": "1.7.2",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
],
"summary": "firefox security update",
"upstream": [
"CVE-2021-29970",
"CVE-2021-43539",
"CVE-2022-34481"
]
}
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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