Bug 1955734 (CVE-2021-31855)

Summary: CVE-2021-31855 kmail: deleting attachments can disclose content of encrypted messages
Product: [Other] Security Response Reporter: Guilherme de Almeida Suckevicz <gsuckevi>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED UPSTREAM QA Contact:
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Priority: low    
Version: unspecifiedCC: kde-sig, rdieter
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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Last Closed: 2021-04-30 22:46:41 UTC Type: ---
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Bug Depends On: 1955735    
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Description Guilherme de Almeida Suckevicz 2021-04-30 17:50:59 UTC
Deleting an attachment of a decrypted encrypted message stored on a remote server (e.g. an IMAP server) causes KMail to upload the decrypted content of the message to the remote server. This is not easily noticeable by the user because KMail does not display the decrypted content.

Reference:
https://kde.org/info/security/advisory-20210429-1.txt

Comment 1 Guilherme de Almeida Suckevicz 2021-04-30 17:51:14 UTC
Created kmail tracking bugs for this issue:

Affects: fedora-all [bug 1955735]

Comment 2 Product Security DevOps Team 2021-04-30 22:46:41 UTC
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.