Bug 1204829 - PyYAML: assert failure when processing wrapped strings
Summary: PyYAML: assert failure when processing wrapped strings
Keywords:
Status: CLOSED WONTFIX
Alias: None
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: 1204830 1204832 1204833
Blocks: 1204835
TreeView+ depends on / blocked
 
Reported: 2015-03-23 15:03 UTC by Martin Prpič
Modified: 2019-09-29 13:30 UTC (History)
38 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
An assertion failure was found in the way the PyYAML library parsed wrapped strings. An attacker able to load specially crafted YAML input into an application using PyYAML could cause the application to crash.
Clone Of:
Environment:
Last Closed: 2016-11-03 21:15:53 UTC
Embargoed:

Attachments (Terms of Use)

Description Martin Prpič 2015-03-23 15:03:02 UTC 
An assertion failure was found in the way the PyYAML library parsed wrapped strings. An attacker able to load specially crafted YAML input into an application using PyYAML could cause the application to crash.

This is the same flaw as CVE-2014-9130 but in the Python implementation of the YAML library. MITRE recommends it should be a separate issue:

http://seclists.org/oss-sec/2014/q4/854

Upstream patch:

https://bitbucket.org/xi/pyyaml/commits/ddf211a41bb231c365fece5599b7e484e6dc33fc
Comment 1 Martin Prpič 2015-03-23 15:04:20 UTC 
Created PyYAML tracking bugs for this issue:

Affects: fedora-all [bug 1204830]
Affects: epel-5 [bug 1204832]
Comment 2 Martin Prpič 2015-03-23 15:04:24 UTC 
Created python26-PyYAML tracking bugs for this issue:

Affects: epel-5 [bug 1204833]
Comment 4 Fedora Update System 2015-04-05 14:33:26 UTC 
PyYAML-3.11-7.fc21 has been pushed to the Fedora 21 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 5 Fedora Update System 2015-04-05 14:35:48 UTC 
PyYAML-3.10-11.fc20 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 6 Fedora Update System 2015-04-09 16:55:59 UTC 
PyYAML-3.09-11.el5 has been pushed to the Fedora EPEL 5 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 7 Fedora Update System 2015-04-21 18:36:20 UTC 
PyYAML-3.11-7.fc22 has been pushed to the Fedora 22 stable repository.  If problems still persist, please make note of it in this bug report.
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