SARA / Free Tools / CVE / CVE-2019-11755

CVE-2019-11755 — A crafted S/MIME message consisting of an inner encryption layer and an outer Si

A crafted S/MIME message consisting of an inner encryption layer and an outer SignedData layer was shown as having a valid digital signature, although the signer might have had no access to the contents of the encrypted message, and might have stripped a different signature from

CVSS
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EPSS
0.41% (top 39.30%)
CWE
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Published
2019-09-27T17:10:44.000Z
Last modified
2024-08-04T23:03:32.735Z
CVSS vector
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01What is this vulnerability?

A crafted S/MIME message consisting of an inner encryption layer and an outer SignedData layer was shown as having a valid digital signature, although the signer might have had no access to the contents of the encrypted message, and might have stripped a different signature from the encrypted message. Previous versions had only suppressed showing a digital signature for messages with an outer…

02Affected products

VendorProductVersions
MozillaThunderbirdunspecified

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

09References

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