Bug 1699750 (CVE-2019-10740)

Summary: CVE-2019-10740 roundcubemail: information disclosure of encrypted message
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: anon.amish, fedora, kevin, mailinglists, mhlavink
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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Last Closed: 2021-10-27 03:27:58 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 1699751    
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Description Dhananjay Arunesh 2019-04-15 07:26:19 UTC 
In Roundcube Webmail 1.3.4, 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://github.com/roundcube/roundcubemail/issues/6638
Comment 1 Dhananjay Arunesh 2019-04-15 07:26:31 UTC 
Created roundcubemail tracking bugs for this issue:

Affects: epel-all [bug 1699751]