RHSA-2020:3046
Vulnerability from csaf_redhat - Published: 2020-07-21 14:34 - Updated: 2025-11-21 18:15Summary
Red Hat Security Advisory: thunderbird security update
Severity
Important
Notes
Topic: An update for thunderbird is now available for Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details: Mozilla Thunderbird is a standalone mail and newsgroup client.
This update upgrades Thunderbird to version 68.10.0.
Security Fix(es):
* Mozilla: Memory corruption due to missing sign-extension for ValueTags on ARM64 (CVE-2020-12417)
* Mozilla: Information disclosure due to manipulated URL object (CVE-2020-12418)
* Mozilla: Use-after-free in nsGlobalWindowInner (CVE-2020-12419)
* Mozilla: Use-After-Free when trying to connect to a STUN server (CVE-2020-12420)
* Mozilla: Add-On updates did not respect the same certificate trust rules as software updates (CVE-2020-12421)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
The Mozilla Foundation Security Advisory describes this flaw as: Due to confusion about ValueTags on JavaScript Objects, an object may pass through the type barrier, resulting in memory corruption and a potentially exploitable crash.
8.8 (High)
Vendor Fix
For details on how to apply this update, which includes the changes described in this advisory, refer to:
https://access.redhat.com/articles/11258
All running instances of Thunderbird must be restarted for the update to take effect.
https://access.redhat.com/errata/RHSA-2020:3046
The Mozilla Foundation Security Advisory describes this flaw as: Manipulating individual parts of a URL object could have caused an out-of-bounds read, leaking process memory to malicious JavaScript.
6.5 (Medium)
Vendor Fix
For details on how to apply this update, which includes the changes described in this advisory, refer to:
https://access.redhat.com/articles/11258
All running instances of Thunderbird must be restarted for the update to take effect.
https://access.redhat.com/errata/RHSA-2020:3046
The Mozilla Foundation Security Advisory describes this flaw as: When processing callbacks that occurred during window flushing in the parent process, the associated window may die; causing a use-after-free condition. This could have led to memory corruption and a potentially exploitable crash.
8.8 (High)
Vendor Fix
For details on how to apply this update, which includes the changes described in this advisory, refer to:
https://access.redhat.com/articles/11258
All running instances of Thunderbird must be restarted for the update to take effect.
https://access.redhat.com/errata/RHSA-2020:3046
The Mozilla Foundation Security Advisory describes this flaw as: When trying to connect to a STUN server, a race condition could have caused a use-after-free of a pointer, leading to memory corruption and a potentially exploitable crash.
8.8 (High)
Vendor Fix
For details on how to apply this update, which includes the changes described in this advisory, refer to:
https://access.redhat.com/articles/11258
All running instances of Thunderbird must be restarted for the update to take effect.
https://access.redhat.com/errata/RHSA-2020:3046
The Mozilla Foundation Security Advisory describes this flaw as: When performing add-on updates, certificate chains terminating in non-built-in-roots were rejected (even if they were legitimately added by an administrator.) This could have caused add-ons to become out-of-date silently without notification to the user.
6.1 (Medium)
Vendor Fix
For details on how to apply this update, which includes the changes described in this advisory, refer to:
https://access.redhat.com/articles/11258
All running instances of Thunderbird must be restarted for the update to take effect.
https://access.redhat.com/errata/RHSA-2020:3046
If an attacker intercepts Thunderbird's initial attempt to perform automatic account setup using the Microsoft Exchange autodiscovery mechanism, and the attacker sends a crafted response, then Thunderbird sends username and password over https to a server controlled by the attacker. This vulnerability affects Thunderbird < 68.10.0.
5.9 (Medium)
Vendor Fix
For details on how to apply this update, which includes the changes described in this advisory, refer to:
https://access.redhat.com/articles/11258
All running instances of Thunderbird must be restarted for the update to take effect.
https://access.redhat.com/errata/RHSA-2020:3046
References
Acknowledgments
the Mozilla project
Deian Stefan
Cisco Talos
Marcin 'Icewall' Noga
the Mozilla Project
worcester12345
Byron Campen
Chuck Harmston
Robert Hardy
Magnus Melin
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"title": "Vulnerability description"
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"AppStream-8.0.0.Z.E4S:thunderbird-debugsource-0:68.10.0-1.el8_0.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "Mozilla: Add-On updates did not respect the same certificate trust rules as software updates"
},
{
"acknowledgments": [
{
"names": [
"the Mozilla project"
]
},
{
"names": [
"Magnus Melin"
],
"summary": "Acknowledged by upstream."
}
],
"cve": "CVE-2020-15646",
"cwe": {
"id": "CWE-200",
"name": "Exposure of Sensitive Information to an Unauthorized Actor"
},
"discovery_date": "2020-06-30T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "1854036"
}
],
"notes": [
{
"category": "description",
"text": "If an attacker intercepts Thunderbird\u0027s initial attempt to perform automatic account setup using the Microsoft Exchange autodiscovery mechanism, and the attacker sends a crafted response, then Thunderbird sends username and password over https to a server controlled by the attacker. This vulnerability affects Thunderbird \u003c 68.10.0.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "Mozilla: Automatic account setup leaks Microsoft Exchange login credentials",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"AppStream-8.0.0.Z.E4S:thunderbird-0:68.10.0-1.el8_0.ppc64le",
"AppStream-8.0.0.Z.E4S:thunderbird-0:68.10.0-1.el8_0.src",
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"AppStream-8.0.0.Z.E4S:thunderbird-debuginfo-0:68.10.0-1.el8_0.x86_64",
"AppStream-8.0.0.Z.E4S:thunderbird-debugsource-0:68.10.0-1.el8_0.ppc64le",
"AppStream-8.0.0.Z.E4S:thunderbird-debugsource-0:68.10.0-1.el8_0.x86_64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2020-15646"
},
{
"category": "external",
"summary": "RHBZ#1854036",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1854036"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2020-15646",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-15646"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2020-15646",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-15646"
},
{
"category": "external",
"summary": "https://www.mozilla.org/en-US/security/advisories/mfsa2020-26/#CVE-2020-15646",
"url": "https://www.mozilla.org/en-US/security/advisories/mfsa2020-26/#CVE-2020-15646"
}
],
"release_date": "2020-06-30T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2020-07-21T14:34:27+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nAll running instances of Thunderbird must be restarted for the update to take effect.",
"product_ids": [
"AppStream-8.0.0.Z.E4S:thunderbird-0:68.10.0-1.el8_0.ppc64le",
"AppStream-8.0.0.Z.E4S:thunderbird-0:68.10.0-1.el8_0.src",
"AppStream-8.0.0.Z.E4S:thunderbird-0:68.10.0-1.el8_0.x86_64",
"AppStream-8.0.0.Z.E4S:thunderbird-debuginfo-0:68.10.0-1.el8_0.ppc64le",
"AppStream-8.0.0.Z.E4S:thunderbird-debuginfo-0:68.10.0-1.el8_0.x86_64",
"AppStream-8.0.0.Z.E4S:thunderbird-debugsource-0:68.10.0-1.el8_0.ppc64le",
"AppStream-8.0.0.Z.E4S:thunderbird-debugsource-0:68.10.0-1.el8_0.x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2020:3046"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.9,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
"version": "3.1"
},
"products": [
"AppStream-8.0.0.Z.E4S:thunderbird-0:68.10.0-1.el8_0.ppc64le",
"AppStream-8.0.0.Z.E4S:thunderbird-0:68.10.0-1.el8_0.src",
"AppStream-8.0.0.Z.E4S:thunderbird-0:68.10.0-1.el8_0.x86_64",
"AppStream-8.0.0.Z.E4S:thunderbird-debuginfo-0:68.10.0-1.el8_0.ppc64le",
"AppStream-8.0.0.Z.E4S:thunderbird-debuginfo-0:68.10.0-1.el8_0.x86_64",
"AppStream-8.0.0.Z.E4S:thunderbird-debugsource-0:68.10.0-1.el8_0.ppc64le",
"AppStream-8.0.0.Z.E4S:thunderbird-debugsource-0:68.10.0-1.el8_0.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "Mozilla: Automatic account setup leaks Microsoft Exchange login credentials"
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
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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