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CVE-2018-18509 PUBLISHED

A flaw during verification of certain S/MIME signatures causes emails to be shown in Thunderbird as having a valid digital signature, even if the shown message contents aren't covered by the signature. The flaw allows an attacker to reuse a valid S/MIME signature to craft an email message with arbitrary content. This vulnerability affects Thunderbird < 60.5.1.

EPSS 0.26% · 49.4th percentile

Risk Scores

EPSS Score
0.26%
49.4th percentile

Affected Products

VendorProductVersions
Ubuntu:14.04:LTSthunderbird1:31.8.0+build1-0ubuntu0.14.04.1, 1:24.0+build1-0ubuntu1, 1:24.0+build1-0ubuntu2
Ubuntu:18.04:LTSthunderbird0, 1:52.4.0+build1-0ubuntu2, 1:52.6.0+build1-0ubuntu1
Ubuntu:16.04:LTSthunderbird1:45.4.0+build1-0ubuntu0.16.04.1, 1:45.5.1+build1-0ubuntu0.16.04.1, 1:45.7.0+build1-0ubuntu0.16.04.1

Timeline

References

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