Bug 1995168 - sylpheed: STARTTLS can be stripped and Sylpheed will proceed in plaintext leaking the user credentials
Summary: sylpheed: STARTTLS can be stripped and Sylpheed will proceed in plaintext lea...
Keywords:
Status: CLOSED UPSTREAM
Alias: None
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1995170 1995169
Blocks:
TreeView+ depends on / blocked
 
Reported: 2021-08-18 14:55 UTC by Pedro Sampaio
Modified: 2021-08-18 21:35 UTC (History)
3 users (show)

Fixed In Version:
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Last Closed: 2021-08-18 21:35:14 UTC
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Description Pedro Sampaio 2021-08-18 14:55:58 UTC 
Configure an IMAP server such that Sylpheed can connect via STARTTLS. When an attacker strips the STARTTLS capability from the server greeting and the response to the capability command, Sylpheed will not issue the STARTTLS command anymore and proceed with the login in plaintext.

References:

https://sylpheed.sraoss.jp/redmine/issues/322
Comment 1 Pedro Sampaio 2021-08-18 14:56:19 UTC 
Created sylpheed tracking bugs for this issue:

Affects: epel-7 [bug 1995170]
Affects: fedora-all [bug 1995169]
Comment 2 Product Security DevOps Team 2021-08-18 21:35:14 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.
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