Bug 1094620 (CVE-2014-3243) - CVE-2014-3243 SOAPpy: XML entity expansion (billion laughs) flaw
Summary: CVE-2014-3243 SOAPpy: XML entity expansion (billion laughs) flaw
Keywords:
Status: CLOSED WONTFIX
Alias: CVE-2014-3243
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: 1178862 1178863
Blocks: 1094623
TreeView+ depends on / blocked
 
Reported: 2014-05-06 07:19 UTC by Murray McAllister
Modified: 2019-09-29 13:17 UTC (History)
4 users (show)

Fixed In Version: SOAPpy 0.12.6
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2019-06-08 02:32:59 UTC


Attachments (Terms of Use)

Description Murray McAllister 2014-05-06 07:19:55 UTC
An entity expansion (billion laughs) flaw was found in SOAPpy. A remote attacker could send a specially-crafted request to an application that uses SOAPpy, leading to excessive CPU and memory consumption.

Original report: http://www.pnigos.com/?p=260

CVE request: http://seclists.org/oss-sec/2014/q2/249

Note that SOAPpy is not actively supported by upstream anymore.

Comment 1 Murray McAllister 2014-05-06 07:21:11 UTC
I've not filed a Fedora or EPEL bug for this (or for bug 1094619), as there is no patch yet from what I can see

Comment 2 Murray McAllister 2014-05-07 00:56:31 UTC
MITRE assigned CVE-2014-3243 to this issue:

http://www.openwall.com/lists/oss-security/2014/05/06/9

Comment 5 Tomas Hoger 2015-01-05 13:06:44 UTC
This was fixed upstream in 0.12.6, via the following commit:

https://github.com/kiorky/SOAPpy/commit/64125a2

This commit introduces a dependency on the defusedxml module (the python-defusedxml package in Fedora).  It should be possible to create a smaller fix that e.g. disables entity expansion and DTD processing unconditionally.

It also only fixes this issue for the server, leaving SOAPpy clients exposed:

https://github.com/kiorky/SOAPpy/issues/17

Comment 6 Tomas Hoger 2015-01-05 15:01:42 UTC
Created SOAPpy tracking bugs for this issue:

Affects: fedora-all [bug 1178862]
Affects: epel-5 [bug 1178863]


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