Vulnerability Monitor

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CVE-2018-18509

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.

Published

2019-04-26T17:29:00.243

Last Modified

2024-11-21T03:56:04.547

Status

Modified

Source

[email protected]

Severity

CVSSv3.0: 5.3 (MEDIUM)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:P/A:N

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: PARTIAL
Availability Impact: NONE

Exploitability Score

10.0

Impact Score

2.9

Weaknesses

Type: Primary
CWE-347

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	mozilla	thunderbird	< 60.5.1	Yes

References

http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00043.html ([email protected])
http://packetstormsecurity.com/files/152703/Johnny-You-Are-Fired.html Third Party Advisory, VDB Entry ([email protected])
http://seclists.org/fulldisclosure/2019/Apr/38 Mailing List, Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2019/04/30/4 Mailing List, Third Party Advisory ([email protected])
https://access.redhat.com/errata/RHSA-2019:1144 ([email protected])
https://bugzilla.mozilla.org/show_bug.cgi?id=1507218 Issue Tracking, Permissions Required, Vendor Advisory ([email protected])
https://github.com/RUB-NDS/Johnny-You-Are-Fired ([email protected])
https://github.com/RUB-NDS/Johnny-You-Are-Fired/blob/master/paper/johnny-fired.pdf ([email protected])
https://www.mozilla.org/security/advisories/mfsa2019-06/ Vendor Advisory ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00043.html (af854a3a-2127-422b-91ae-364da2661108)
http://packetstormsecurity.com/files/152703/Johnny-You-Are-Fired.html Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
http://seclists.org/fulldisclosure/2019/Apr/38 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2019/04/30/4 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://access.redhat.com/errata/RHSA-2019:1144 (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.mozilla.org/show_bug.cgi?id=1507218 Issue Tracking, Permissions Required, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/RUB-NDS/Johnny-You-Are-Fired (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/RUB-NDS/Johnny-You-Are-Fired/blob/master/paper/johnny-fired.pdf (af854a3a-2127-422b-91ae-364da2661108)
https://www.mozilla.org/security/advisories/mfsa2019-06/ Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)