RHSA-2021:5045
Vulnerability from csaf_opensuse - Published: 2021-12-09 00:00 - Updated: 2026-09-20 11:18Summary
security update for thunderbird
Severity
Important
Notes
Title of the patch: security update for thunderbird
Description of the patch: This security update provides a functional equivalent of RHSA-2021:5045.
The original Red Hat(R) advisory is available from the Red Hat web site at
https://access.redhat.com/errata/RHSA-2021:5045.
Patchnames: RHSA-2021:5045
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
9.8 (Critical)
Affected products
Recommended
1 product
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: SUSE Liberty Linux 8:thunderbird-0:91.4.0-2.el8_5.x86_64 | — |
Vendor Fix
|
Threats
Impact
important
6.3 (Medium)
Affected products
Recommended
1 product, the same list as for
CVE-2021-4129
Threats
Impact
important
7.5 (High)
Affected products
Recommended
1 product, the same list as for
CVE-2021-4129
Threats
Impact
important
7.5 (High)
Affected products
Recommended
1 product, the same list as for
CVE-2021-4129
Threats
Impact
important
7.5 (High)
Affected products
Recommended
1 product, the same list as for
CVE-2021-4129
Threats
Impact
important
7.5 (High)
Affected products
Recommended
1 product, the same list as for
CVE-2021-4129
Threats
Impact
important
6.1 (Medium)
Affected products
Recommended
1 product, the same list as for
CVE-2021-4129
Threats
Impact
important
6.1 (Medium)
Affected products
Recommended
1 product, the same list as for
CVE-2021-4129
Threats
Impact
important
6.1 (Medium)
Affected products
Recommended
1 product, the same list as for
CVE-2021-4129
Threats
Impact
important
4.3 (Medium)
Affected products
Recommended
1 product, the same list as for
CVE-2021-4129
Threats
Impact
important
5.4 (Medium)
Affected products
Recommended
1 product, the same list as for
CVE-2021-4129
Threats
Impact
important
References
35 references
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{
"category": "general",
"text": "Mozilla developers and community members Julian Hector, Randell Jesup, Gabriele Svelto, Tyson Smith, Christian Holler, and Masayuki Nakano reported memory safety bugs present in Firefox 94. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox \u003c 95, Firefox ESR \u003c 91.4.0, and Thunderbird \u003c 91.4.0.",
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"text": "https://www.suse.com/security/cve/CVE-2021-43528"
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],
"notes": [
{
"category": "general",
"text": "Thunderbird unexpectedly enabled JavaScript in the composition area. The JavaScript execution context was limited to this area and did not receive chrome-level privileges, but could be used as a stepping stone to further an attack with other vulnerabilities. This vulnerability affects Thunderbird \u003c 91.4.0.",
"title": "CVE description"
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"product_ids": [
"SUSE Liberty Linux 8:thunderbird-0:91.4.0-2.el8_5.x86_64"
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}
],
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"cve": "CVE-2021-43536",
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"text": "https://www.suse.com/security/cve/CVE-2021-43536"
}
],
"notes": [
{
"category": "general",
"text": "Under certain circumstances, asynchronous functions could have caused a navigation to fail but expose the target URL. This vulnerability affects Thunderbird \u003c 91.4.0, Firefox ESR \u003c 91.4.0, and Firefox \u003c 95.",
"title": "CVE description"
}
],
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"SUSE Liberty Linux 8:thunderbird-0:91.4.0-2.el8_5.x86_64"
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"text": "https://www.suse.com/security/cve/CVE-2021-43537"
}
],
"notes": [
{
"category": "general",
"text": "An incorrect type conversion of sizes from 64bit to 32bit integers allowed an attacker to corrupt memory leading to a potentially exploitable crash. This vulnerability affects Thunderbird \u003c 91.4.0, Firefox ESR \u003c 91.4.0, and Firefox \u003c 95.",
"title": "CVE description"
}
],
"product_status": {
"recommended": [
"SUSE Liberty Linux 8:thunderbird-0:91.4.0-2.el8_5.x86_64"
]
},
"references": [
{
"category": "external",
"summary": "CVE-2021-43537",
"url": "https://www.suse.com/security/cve/CVE-2021-43537"
},
{
"category": "external",
"summary": "SUSE Bug 1193485 for CVE-2021-43537",
"url": "https://bugzilla.suse.com/1193485"
}
],
"remediations": [
{
"category": "vendor_fix",
"details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
"product_ids": [
"SUSE Liberty Linux 8:thunderbird-0:91.4.0-2.el8_5.x86_64"
]
}
],
"scores": [
{
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"baseScore": 7.5,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
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]
}
],
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{
"category": "impact",
"date": "2021-12-09T00:00:00Z",
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},
{
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{
"system_name": "SUSE CVE Page",
"text": "https://www.suse.com/security/cve/CVE-2021-43538"
}
],
"notes": [
{
"category": "general",
"text": "By misusing a race in our notification code, an attacker could have forcefully hidden the notification for pages that had received full screen and pointer lock access, which could have been used for spoofing attacks. This vulnerability affects Thunderbird \u003c 91.4.0, Firefox ESR \u003c 91.4.0, and Firefox \u003c 95.",
"title": "CVE description"
}
],
"product_status": {
"recommended": [
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]
},
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{
"category": "external",
"summary": "CVE-2021-43538",
"url": "https://www.suse.com/security/cve/CVE-2021-43538"
},
{
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"url": "https://bugzilla.suse.com/1193485"
}
],
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{
"category": "vendor_fix",
"details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
"product_ids": [
"SUSE Liberty Linux 8:thunderbird-0:91.4.0-2.el8_5.x86_64"
]
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 7.5,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
"SUSE Liberty Linux 8:thunderbird-0:91.4.0-2.el8_5.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"date": "2021-12-09T00:00:00Z",
"details": "important"
}
],
"title": "CVE-2021-43538"
},
{
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"ids": [
{
"system_name": "SUSE CVE Page",
"text": "https://www.suse.com/security/cve/CVE-2021-43539"
}
],
"notes": [
{
"category": "general",
"text": "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 \u003c 91.4.0, Firefox ESR \u003c 91.4.0, and Firefox \u003c 95.",
"title": "CVE description"
}
],
"product_status": {
"recommended": [
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{
"category": "external",
"summary": "CVE-2021-43539",
"url": "https://www.suse.com/security/cve/CVE-2021-43539"
},
{
"category": "external",
"summary": "SUSE Bug 1193485 for CVE-2021-43539",
"url": "https://bugzilla.suse.com/1193485"
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],
"remediations": [
{
"category": "vendor_fix",
"details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
"product_ids": [
"SUSE Liberty Linux 8:thunderbird-0:91.4.0-2.el8_5.x86_64"
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}
],
"scores": [
{
"cvss_v3": {
"baseScore": 7.5,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
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],
"threats": [
{
"category": "impact",
"date": "2021-12-09T00:00:00Z",
"details": "important"
}
],
"title": "CVE-2021-43539"
},
{
"cve": "CVE-2021-43541",
"ids": [
{
"system_name": "SUSE CVE Page",
"text": "https://www.suse.com/security/cve/CVE-2021-43541"
}
],
"notes": [
{
"category": "general",
"text": "When invoking protocol handlers for external protocols, a supplied parameter URL containing spaces was not properly escaped. This vulnerability affects Thunderbird \u003c 91.4.0, Firefox ESR \u003c 91.4.0, and Firefox \u003c 95.",
"title": "CVE description"
}
],
"product_status": {
"recommended": [
"SUSE Liberty Linux 8:thunderbird-0:91.4.0-2.el8_5.x86_64"
]
},
"references": [
{
"category": "external",
"summary": "CVE-2021-43541",
"url": "https://www.suse.com/security/cve/CVE-2021-43541"
},
{
"category": "external",
"summary": "SUSE Bug 1193485 for CVE-2021-43541",
"url": "https://bugzilla.suse.com/1193485"
}
],
"remediations": [
{
"category": "vendor_fix",
"details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
"product_ids": [
"SUSE Liberty Linux 8:thunderbird-0:91.4.0-2.el8_5.x86_64"
]
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 6.1,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
"version": "3.1"
},
"products": [
"SUSE Liberty Linux 8:thunderbird-0:91.4.0-2.el8_5.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"date": "2021-12-09T00:00:00Z",
"details": "important"
}
],
"title": "CVE-2021-43541"
},
{
"cve": "CVE-2021-43542",
"ids": [
{
"system_name": "SUSE CVE Page",
"text": "https://www.suse.com/security/cve/CVE-2021-43542"
}
],
"notes": [
{
"category": "general",
"text": "Using XMLHttpRequest, an attacker could have identified installed applications by probing error messages for loading external protocols. This vulnerability affects Thunderbird \u003c 91.4.0, Firefox ESR \u003c 91.4.0, and Firefox \u003c 95.",
"title": "CVE description"
}
],
"product_status": {
"recommended": [
"SUSE Liberty Linux 8:thunderbird-0:91.4.0-2.el8_5.x86_64"
]
},
"references": [
{
"category": "external",
"summary": "CVE-2021-43542",
"url": "https://www.suse.com/security/cve/CVE-2021-43542"
},
{
"category": "external",
"summary": "SUSE Bug 1193485 for CVE-2021-43542",
"url": "https://bugzilla.suse.com/1193485"
}
],
"remediations": [
{
"category": "vendor_fix",
"details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
"product_ids": [
"SUSE Liberty Linux 8:thunderbird-0:91.4.0-2.el8_5.x86_64"
]
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 6.1,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
"version": "3.1"
},
"products": [
"SUSE Liberty Linux 8:thunderbird-0:91.4.0-2.el8_5.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"date": "2021-12-09T00:00:00Z",
"details": "important"
}
],
"title": "CVE-2021-43542"
},
{
"cve": "CVE-2021-43543",
"ids": [
{
"system_name": "SUSE CVE Page",
"text": "https://www.suse.com/security/cve/CVE-2021-43543"
}
],
"notes": [
{
"category": "general",
"text": "Documents loaded with the CSP sandbox directive could have escaped the sandbox\u0027s script restriction by embedding additional content. This vulnerability affects Thunderbird \u003c 91.4.0, Firefox ESR \u003c 91.4.0, and Firefox \u003c 95.",
"title": "CVE description"
}
],
"product_status": {
"recommended": [
"SUSE Liberty Linux 8:thunderbird-0:91.4.0-2.el8_5.x86_64"
]
},
"references": [
{
"category": "external",
"summary": "CVE-2021-43543",
"url": "https://www.suse.com/security/cve/CVE-2021-43543"
},
{
"category": "external",
"summary": "SUSE Bug 1193485 for CVE-2021-43543",
"url": "https://bugzilla.suse.com/1193485"
}
],
"remediations": [
{
"category": "vendor_fix",
"details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
"product_ids": [
"SUSE Liberty Linux 8:thunderbird-0:91.4.0-2.el8_5.x86_64"
]
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 6.1,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
"version": "3.1"
},
"products": [
"SUSE Liberty Linux 8:thunderbird-0:91.4.0-2.el8_5.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"date": "2021-12-09T00:00:00Z",
"details": "important"
}
],
"title": "CVE-2021-43543"
},
{
"cve": "CVE-2021-43545",
"ids": [
{
"system_name": "SUSE CVE Page",
"text": "https://www.suse.com/security/cve/CVE-2021-43545"
}
],
"notes": [
{
"category": "general",
"text": "Using the Location API in a loop could have caused severe application hangs and crashes. This vulnerability affects Thunderbird \u003c 91.4.0, Firefox ESR \u003c 91.4.0, and Firefox \u003c 95.",
"title": "CVE description"
}
],
"product_status": {
"recommended": [
"SUSE Liberty Linux 8:thunderbird-0:91.4.0-2.el8_5.x86_64"
]
},
"references": [
{
"category": "external",
"summary": "CVE-2021-43545",
"url": "https://www.suse.com/security/cve/CVE-2021-43545"
},
{
"category": "external",
"summary": "SUSE Bug 1193485 for CVE-2021-43545",
"url": "https://bugzilla.suse.com/1193485"
}
],
"remediations": [
{
"category": "vendor_fix",
"details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
"product_ids": [
"SUSE Liberty Linux 8:thunderbird-0:91.4.0-2.el8_5.x86_64"
]
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 4.3,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L",
"version": "3.1"
},
"products": [
"SUSE Liberty Linux 8:thunderbird-0:91.4.0-2.el8_5.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"date": "2021-12-09T00:00:00Z",
"details": "important"
}
],
"title": "CVE-2021-43545"
},
{
"cve": "CVE-2021-43546",
"ids": [
{
"system_name": "SUSE CVE Page",
"text": "https://www.suse.com/security/cve/CVE-2021-43546"
}
],
"notes": [
{
"category": "general",
"text": "It was possible to recreate previous cursor spoofing attacks against users with a zoomed native cursor. This vulnerability affects Thunderbird \u003c 91.4.0, Firefox ESR \u003c 91.4.0, and Firefox \u003c 95.",
"title": "CVE description"
}
],
"product_status": {
"recommended": [
"SUSE Liberty Linux 8:thunderbird-0:91.4.0-2.el8_5.x86_64"
]
},
"references": [
{
"category": "external",
"summary": "CVE-2021-43546",
"url": "https://www.suse.com/security/cve/CVE-2021-43546"
},
{
"category": "external",
"summary": "SUSE Bug 1193485 for CVE-2021-43546",
"url": "https://bugzilla.suse.com/1193485"
}
],
"remediations": [
{
"category": "vendor_fix",
"details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
"product_ids": [
"SUSE Liberty Linux 8:thunderbird-0:91.4.0-2.el8_5.x86_64"
]
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 5.4,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L",
"version": "3.1"
},
"products": [
"SUSE Liberty Linux 8:thunderbird-0:91.4.0-2.el8_5.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"date": "2021-12-09T00:00:00Z",
"details": "important"
}
],
"title": "CVE-2021-43546"
}
]
}
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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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