CVE-2019-10735

Public Exploit

Description

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.

Category

4.3
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.14%
Third-Party Advisory co.uk
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://www.thewildbeast.co.uk/claws-mail/bugzilla/show_bug.cgi?id=4159 third party advisory issue tracking exploit

Frequently Asked Questions

What is the severity of CVE-2019-10735?
CVE-2019-10735 has been scored as a medium severity vulnerability.
How to fix CVE-2019-10735?
To fix CVE-2019-10735, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-10735 being actively exploited in the wild?
It is possible that CVE-2019-10735 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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