Bug 1903443 (CVE-2020-26970) - CVE-2020-26970 Mozilla: Stack overflow due to incorrect parsing of SMTP server response codes
Summary: CVE-2020-26970 Mozilla: Stack overflow due to incorrect parsing of SMTP serve...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2020-26970
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1903436 1903437 1903438 1903439 1903440 1903441 1903442
Blocks: 1903434
TreeView+ depends on / blocked
 
Reported: 2020-12-02 04:44 UTC by Doran Moppert
Modified: 2021-10-05 06:54 UTC (History)
6 users (show)

Fixed In Version: thunderbird 78.5.1
Clone Of:
Environment:
Last Closed: 2020-12-14 12:47:08 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2020:5398 0 None None None 2020-12-14 12:21:37 UTC
Red Hat Product Errata RHSA-2020:5399 0 None None None 2020-12-14 12:25:45 UTC
Red Hat Product Errata RHSA-2020:5400 0 None None None 2020-12-14 12:49:51 UTC
Red Hat Product Errata RHSA-2020:5644 0 None None None 2020-12-21 12:31:20 UTC
Red Hat Product Errata RHSA-2020:5645 0 None None None 2020-12-21 13:35:40 UTC

Description Doran Moppert 2020-12-02 04:44:04 UTC 
When reading SMTP server status codes, Thunderbird writes an integer value to a position on the stack that is intended to contain just one byte. Depending on processor architecture and stack layout, this leads to stack corruption that may be exploitable.



External Reference:

https://www.mozilla.org/en-US/security/advisories/mfsa2020-53/#CVE-2020-26970
Comment 1 Doran Moppert 2020-12-02 04:44:08 UTC 
Acknowledgments:

Name: the Mozilla project
Upstream: Chiaki Ishikawa
Comment 2 errata-xmlrpc 2020-12-14 12:21:31 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2020:5398 https://access.redhat.com/errata/RHSA-2020:5398
Comment 3 errata-xmlrpc 2020-12-14 12:25:41 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.2 Extended Update Support

Via RHSA-2020:5399 https://access.redhat.com/errata/RHSA-2020:5399
Comment 4 Product Security DevOps Team 2020-12-14 12:47:08 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2020-26970
Comment 5 errata-xmlrpc 2020-12-14 12:49:52 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2020:5400 https://access.redhat.com/errata/RHSA-2020:5400
Comment 8 errata-xmlrpc 2020-12-21 12:31:18 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.1 Extended Update Support

Via RHSA-2020:5644 https://access.redhat.com/errata/RHSA-2020:5644
Comment 9 errata-xmlrpc 2020-12-21 13:35:40 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions

Via RHSA-2020:5645 https://access.redhat.com/errata/RHSA-2020:5645
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