Bug 1719501 (CVE-2019-12387) - CVE-2019-12387 python-twisted: Improper neutralization of CRLF characters in URIs and HTTP methods
Summary: CVE-2019-12387 python-twisted: Improper neutralization of CRLF characters in ...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2019-12387
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1719502 1719503 1721518 1723274 1729865 1731292 1731293 1731294
Blocks: 1719504
TreeView+ depends on / blocked
 
Reported: 2019-06-12 00:14 UTC by Pedro Sampaio
Modified: 2021-04-03 16:11 UTC (History)
28 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2020-03-31 22:34:22 UTC
Embargoed:

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System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2020:1091 0 None None None 2020-03-31 19:21:34 UTC

Description Pedro Sampaio 2019-06-12 00:14:40 UTC 
In Twisted before 19.2.1, twisted.web did not validate or sanitize URIs or HTTP methods, allowing an attacker to inject invalid characters such as CRLF.

Upstream patch:

https://github.com/twisted/twisted/commit/6c61fc4503ae39ab8ecee52d10f10ee2c371d7e2

References:

https://github.com/twisted/twisted/commit/6c61fc4503ae39ab8ecee52d10f10ee2c371d7e2
Comment 1 Pedro Sampaio 2019-06-12 00:16:01 UTC 
Created python-twisted tracking bugs for this issue:

Affects: fedora-all [bug 1719503]
Comment 14 errata-xmlrpc 2020-03-31 19:21:32 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2020:1091 https://access.redhat.com/errata/RHSA-2020:1091
Comment 15 Product Security DevOps Team 2020-03-31 22:34:22 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2019-12387
Comment 17 Nick Tait 2021-04-03 16:11:19 UTC 
Statement:

* This issue does not affect Red Hat Gluster Storage 3 and Red Hat Ceph Storage 2 and 3 because these products do not use the twisted web APIs.
* This issue does affect Red Hat Enterprise Linux 6. However, because this version is now in Maintenance Support 2 Phase and the flaw has a security impact of Moderate,  it is not currently planned to be addressed in future Red Hat Enterprise Linux 6 updates. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata
* In Red Hat OpenStack Platform, because the flaw has a lower impact and the fix would require a substantial amount of development, no update will be provided at this time for the RHOSP python-twisted package.
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