RHSA-2020:2613

Vulnerability from csaf_redhat - Published: 2020-06-19 03:16 - Updated: 2025-11-21 18:14
Summary
Red Hat Security Advisory: thunderbird security update
Severity
Important
Notes
Topic: An update for thunderbird is now available for Red Hat Enterprise Linux 6. 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 68.9.0. Security Fix(es): * Mozilla: Security downgrade with IMAP STARTTLS leads to information leakage (CVE-2020-12398) * Mozilla: Use-after-free in SharedWorkerService (CVE-2020-12405) * Mozilla: JavaScript Type confusion with NativeTypes (CVE-2020-12406) * Mozilla: Memory safety bugs fixed in Firefox 77 and Firefox ESR 68.9 (CVE-2020-12410) 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.
CVE-2020-12398

The Mozilla Foundation Security Advisory describes this flaw as: If Thunderbird is configured to use STARTTLS for an IMAP server, and the server sends a PREAUTH response, then Thunderbird will continue with an unencrypted connection, causing email data to be sent without protection.

7.5 (High)
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
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-2020:2613
CVE-2020-12405

The Mozilla Foundation Security Advisory describes this flaw as: When browsing a malicious page, a race condition in our SharedWorkerService could occur and lead to a potentially exploitable crash.

5.3 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
CWE-416 - Use After Free
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-2020:2613
CVE-2020-12406

The Mozilla Foundation Security Advisory describes this flaw as: Mozilla developer Iain Ireland discovered a missing type check during unboxed objects removal, resulting in a crash. We presume that with enough effort that it could be exploited to run arbitrary code.

8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE-843 - Access of Resource Using Incompatible Type ('Type Confusion')
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-2020:2613
CVE-2020-12410

The Mozilla Foundation Security Advisory describes this flaw as: Mozilla developers reported memory safety bugs present in Firefox 76 and Firefox ESR 68.8. 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.

8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
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-2020:2613
References
https://access.redhat.com/errata/RHSA-2020:2613 self
https://access.redhat.com/security/updates/classi… external
https://bugzilla.redhat.com/show_bug.cgi?id=1843030 external
https://bugzilla.redhat.com/show_bug.cgi?id=1843312 external
https://bugzilla.redhat.com/show_bug.cgi?id=1843313 external
https://bugzilla.redhat.com/show_bug.cgi?id=1846556 external
https://security.access.redhat.com/data/csaf/v2/a… self
https://access.redhat.com/security/cve/CVE-2020-12398 self
https://bugzilla.redhat.com/show_bug.cgi?id=1846556 external
https://www.cve.org/CVERecord?id=CVE-2020-12398 external
https://nvd.nist.gov/vuln/detail/CVE-2020-12398 external
https://www.mozilla.org/en-US/security/advisories… external
https://access.redhat.com/security/cve/CVE-2020-12405 self
https://bugzilla.redhat.com/show_bug.cgi?id=1843313 external
https://www.cve.org/CVERecord?id=CVE-2020-12405 external
https://nvd.nist.gov/vuln/detail/CVE-2020-12405 external
https://www.mozilla.org/en-US/security/advisories… external
https://access.redhat.com/security/cve/CVE-2020-12406 self
https://bugzilla.redhat.com/show_bug.cgi?id=1843312 external
https://www.cve.org/CVERecord?id=CVE-2020-12406 external
https://nvd.nist.gov/vuln/detail/CVE-2020-12406 external
https://www.mozilla.org/en-US/security/advisories… external
https://access.redhat.com/security/cve/CVE-2020-12410 self
https://bugzilla.redhat.com/show_bug.cgi?id=1843030 external
https://www.cve.org/CVERecord?id=CVE-2020-12410 external
https://nvd.nist.gov/vuln/detail/CVE-2020-12410 external
Acknowledgments
the Mozilla project
Damian Poddebniak
Cisco Talos Marcin 'Icewall' Noga
Iain Ireland
Tom Tung and Karl Tomlinson
To clipboard 

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          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2020-12410"
        },
        {
          "category": "external",
          "summary": "RHBZ#1843030",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1843030"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2020-12410",
          "url": "https://www.cve.org/CVERecord?id=CVE-2020-12410"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2020-12410",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-12410"
        },
        {
          "category": "external",
          "summary": "https://www.mozilla.org/en-US/security/advisories/mfsa2020-21/#CVE-2020-12405",
          "url": "https://www.mozilla.org/en-US/security/advisories/mfsa2020-21/#CVE-2020-12405"
        }
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      "release_date": "2020-06-02T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2020-06-19T03:16:59+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.",
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        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
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      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "Mozilla: Memory safety bugs fixed in Firefox 77 and Firefox ESR 68.9"
    }
  ]
}


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Tags
Taxonomy of the tags.




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.



Detection rules are retrieved from Rulezet.