CVE-2018-18509

Name	CVE-2018-18509
Description	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.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-1678-1, DSA-4392-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
thunderbird (PTS)	bullseye	1:115.12.0-1~deb11u1	fixed
	bullseye (security)	1:115.15.0-1~deb11u1	fixed
	bookworm	1:115.12.0-1~deb12u1	fixed
	bookworm (security)	1:115.15.0-1~deb12u1	fixed
	trixie	1:128.2.0esr-1	fixed
	sid	1:128.3.0esr-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Origin
thunderbird	source	jessie	1:60.5.1-1~deb8u1	DLA-1678-1
thunderbird	source	stretch	1:60.5.1-1~deb9u1	DSA-4392-1
thunderbird	source	(unstable)	1:60.5.1-1

https://www.mozilla.org/en-US/security/advisories/mfsa2019-06/#CVE-2018-18511