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:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	kde-sig, rdieter
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
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Fixed In Version:		Doc Type:	If docs needed, set a value
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Last Closed:	2021-04-30 22:46:41 UTC	Type:	---
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Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1955735
Bug Blocks:

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.