Bug 1898147 - CVE-2020-8259 nextcloud: Improper integrity protection of server-side encryption keys [fedora-all]
Summary: CVE-2020-8259 nextcloud: Improper integrity protection of server-side encrypt...
Alias: None
Product: Fedora
Classification: Fedora
Component: nextcloud
Version: 33
Hardware: Unspecified
OS: Unspecified
Target Milestone: ---
Assignee: Christopher Engelhard
QA Contact: Fedora Extras Quality Assurance
Depends On:
Blocks: CVE-2020-8259
TreeView+ depends on / blocked
Reported: 2020-11-16 14:18 UTC by Michael Kaplan
Modified: 2020-11-18 08:59 UTC (History)
2 users (show)

Fixed In Version:
Doc Type: No Doc Update
Doc Text:
Clone Of:
Last Closed: 2020-11-18 08:58:23 UTC
Type: ---

Attachments (Terms of Use)

Description Michael Kaplan 2020-11-16 14:18:26 UTC
This is an automatically created tracking bug!  It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of fedora-all.

For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.

For more information see:

When submitting as an update, use the fedpkg template provided in the next
comment(s).  This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.

Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.

NOTE: this issue affects multiple supported versions of Fedora. While only
one tracking bug has been filed, please correct all affected versions at
the same time.  If you need to fix the versions independent of each other,
you may clone this bug as appropriate.

Comment 1 Michael Kaplan 2020-11-16 14:18:28 UTC
Use the following template to for the 'fedpkg update' request to submit an
update for this issue as it contains the top-level parent bug(s) as well as
this tracking bug.  This will ensure that all associated bugs get updated
when new packages are pushed to stable.


# bugfix, security, enhancement, newpackage (required)

# low, medium, high, urgent (required)

# testing, stable

# Bug numbers: 1234,9876

# Description of your update
notes=Security fix for [PUT CVEs HERE]

# Enable request automation based on the stable/unstable karma thresholds

# Automatically close bugs when this marked as stable

# Suggest that users restart after update


Additionally, you may opt to use the bodhi web interface to submit updates:


Comment 2 Christopher Engelhard 2020-11-18 08:58:23 UTC
This has been fixed in 20.0.0+, but as the impact is minor and the fix can't be easily backported, it will not be fixed in Nextcloud 18 and 19.
If the attack vector [1] matches a user's threat model, they can switch to either the nextcloud-20 or nextcloud-stable streams.

More discussion can be found in the FESCo ticket[2].

[1] https://hackerone.com/reports/732431
[2] https://pagure.io/fesco/issue/2504

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