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Mageia 7: 2020-0091 Critical: Thunderbird Memory Corruption

mageia
Calendar Grey February 18, 2020
Dist Mageia Esm H88
Enhanced Thunderbird versions tackle severe vulnerabilities such as data leaks, providing more secure mailing solutions.
Updated thunderbird packages fix security vulnerabilities: When deriving an identifier for an email message, uninitialized memory was used in addition to the message contents (CVE...

Summary

Updated thunderbird packages fix security vulnerabilities:
When deriving an identifier for an email message, uninitialized memory was used in addition to the message contents (CVE-2020-6792).
When processing an email message with an ill-formed envelope, Thunderbird could read data from a random memory location (CVE-2020-6793).
If a user saved passwords before Thunderbird 60 and then later set a master password, an unencrypted copy of these passwords is still accessible. This is because the older stored password file was not deleted when the data was copied to a new format starting in Thunderbird 60. The new master password is added only on the new file. This could allow the exposure of stored password data outside of user expectations (CVE-2020-6794).
When processing a message that contains multiple S/MIME signatures, a bug in the MIME processing code caused a null pointer dereference, leading to an unexploitable crash (CVE-2020-6795).
If a template tag was used in a select tag, the...

Read the Full Advisory

References

- https://bugs.mageia.org/show_bug.cgi?id=26188

- https://www.mozilla.org/en-US/security/advisories/mfsa2020-07/

- https://www.thunderbird.net/en-US/thunderbird/68.5.0/releasenotes/

- https://www.cve.org/CVERecord?id=CVE-2020-6792

- https://www.cve.org/CVERecord?id=CVE-2020-6793

- https://www.cve.org/CVERecord?id=CVE-2020-6794

- https://www.cve.org/CVERecord?id=CVE-2020-6795

- https://www.cve.org/CVERecord?id=CVE-2020-6798

- https://www.cve.org/CVERecord?id=CVE-2020-6800

Resolution

SRPMS

- 7/core/thunderbird-68.5.0-1.mga7

- 7/core/thunderbird-l10n-68.5.0-1.mga7

Severity
critical
Lowest
Low
Medium
High
Critical

Publication date: 18 Feb 2020
URL: https://advisories.mageia.org/MGASA-2020-0091.html
Type: security
CVE: CVE-2020-6792, CVE-2020-6793, CVE-2020-6794, CVE-2020-6795, CVE-2020-6798, CVE-2020-6800

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