Bug 1699822 (CVE-2019-10735)

Summary: CVE-2019-10735 claws-mail: information disclosure of encrypted mail
Product: [Other] Security Response Reporter: Dhananjay Arunesh <darunesh>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: andreas.bierfert
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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Last Closed: 2021-10-27 03:28:02 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On: 1699823    
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Description Dhananjay Arunesh 2019-04-15 10:13:46 UTC 
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.

Reference:
https://www.thewildbeast.co.uk/claws-mail/bugzilla/show_bug.cgi?id=4159
Comment 1 Dhananjay Arunesh 2019-04-15 10:15:58 UTC 
Created claws-mail tracking bugs for this issue:

Affects: epel-6 [bug 1699823]