Vulnerability in Claws-Mail Mail
CVE-2019-10735
In Claws Mail 3.14.1, an attacker in possession of S/MIME or PGP encrypted emails can wrap them as sub-parts within a crafted multipart email. The encrypted part(s) can further be hidden using HTML/CSS or ASCII newline characters. This modified multipart email can be re-sent by the attacker to the intended receiver. If the receiver replies to this (benign looking) email, they unknowingly leak the plaintext of the encrypted message part(s) back to the attacker.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.006 (47.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 47th percentile — 47.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Claws-Mail Mail — versions 3.14.1
Weakness classification (CWE)
References
- www.thewildbeast.co.uk/claws-mail/bugzilla/show_bug.cgi (Exploit, Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2019-10735?
- CVE-2019-10735 is a medium-severity vulnerability in Claws-Mail Mail, classified under Cleartext Transmission of Sensitive Information. CVSS score: 4.3/10. Published 2019-04-07.
- How severe is CVE-2019-10735?
- Medium severity. CVSS v3 base score is 4.3 out of 10.