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Bug 1809073 - CVE-2020-8492 python3: python: wrong backtracking in urllib.request.AbstractBasicAuthHandler allows for a ReDoS [fedora-all]
Summary: CVE-2020-8492 python3: python: wrong backtracking in urllib.request.AbstractB...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora
Classification: Fedora
Component: python3
Version: 31
Hardware: Unspecified
OS: Unspecified
high
medium
Target Milestone: ---
Assignee: Charalampos Stratakis
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2020-03-02 11:37 UTC by Marian Rehak
Modified: 2020-05-29 02:26 UTC (History)
11 users (show)

Fixed In Version: python3-3.8.3-1.fc32
Doc Type: No Doc Update
Doc Text:
Clone Of:
Environment:
Last Closed: 2020-05-26 03:12:39 UTC
Type: ---
Embargoed:


Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Github python cpython pull 18284/files 0 None None None 2020-05-19 10:21:51 UTC

Description Marian Rehak 2020-03-02 11:37:04 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:
http://fedoraproject.org/wiki/Security/TrackingBugs

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 Marian Rehak 2020-03-02 11:37:07 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)
type=security

# low, medium, high, urgent (required)
severity=high

# testing, stable
request=testing

# Bug numbers: 1234,9876
bugs=1809065,1809073

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

# Enable request automation based on the stable/unstable karma thresholds
autokarma=True
stable_karma=3
unstable_karma=-3

# Automatically close bugs when this marked as stable
close_bugs=True

# Suggest that users restart after update
suggest_reboot=False

======

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

https://bodhi.fedoraproject.org/updates/new

Comment 2 Victor Stinner 2020-03-03 14:25:18 UTC
I propose a fix upstream: https://github.com/python/cpython/pull/18284

Comment 4 Petr Viktorin 2020-04-15 12:26:18 UTC
This will get in with then next upstream release.

Comment 5 Miro Hrončok 2020-04-29 12:47:45 UTC
This will be in 3.8.3 (really soon, we'll wait it out) and 3.7.8 (June, we'll wait it out as well unless there is an outcry).

Comment 6 Fedora Update System 2020-05-19 10:22:58 UTC
FEDORA-2020-98e0f0f11b has been submitted as an update to Fedora 32. https://bodhi.fedoraproject.org/updates/FEDORA-2020-98e0f0f11b

Comment 7 Fedora Update System 2020-05-20 05:48:40 UTC
FEDORA-2020-98e0f0f11b has been pushed to the Fedora 32 testing repository.
In short time you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --advisory=FEDORA-2020-98e0f0f11b`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2020-98e0f0f11b

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 8 Fedora Update System 2020-05-20 16:34:07 UTC
FEDORA-2020-6a88dad4a0 has been submitted as an update to Fedora 31. https://bodhi.fedoraproject.org/updates/FEDORA-2020-6a88dad4a0

Comment 9 Fedora Update System 2020-05-20 16:34:08 UTC
FEDORA-2020-bc98d7894f has been submitted as an update to Fedora 30. https://bodhi.fedoraproject.org/updates/FEDORA-2020-bc98d7894f

Comment 10 Fedora Update System 2020-05-21 03:42:39 UTC
FEDORA-2020-bc98d7894f has been pushed to the Fedora 30 testing repository.
In short time you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --advisory=FEDORA-2020-bc98d7894f`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2020-bc98d7894f

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 11 Fedora Update System 2020-05-21 04:16:21 UTC
FEDORA-2020-6a88dad4a0 has been pushed to the Fedora 31 testing repository.
In short time you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --advisory=FEDORA-2020-6a88dad4a0`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2020-6a88dad4a0

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 12 Fedora Update System 2020-05-26 03:12:39 UTC
FEDORA-2020-98e0f0f11b has been pushed to the Fedora 32 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 13 Fedora Update System 2020-05-29 02:26:32 UTC
FEDORA-2020-6a88dad4a0 has been pushed to the Fedora 31 stable repository.
If problem still persists, please make note of it in this bug report.


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