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Bug 1481335 - (CVE-2017-12588) CVE-2017-12588 rsyslog: multiple format string vulnerabilities in zmq3 modules
CVE-2017-12588 rsyslog: multiple format string vulnerabilities in zmq3 modules
Status: CLOSED NOTABUG
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
impact=moderate,public=20170802,repor...
: Security
Depends On:
Blocks: 1481340
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Reported: 2017-08-14 11:50 EDT by Pedro Sampaio
Modified: 2017-08-17 08:24 EDT (History)
11 users (show)

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Multiple format string vulnerabilities were found in the zmq3 modules in rsyslog. A local attacker could potentially use these flaws to crash the rsyslog daemon under certain circumstances.
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Last Closed: 2017-08-17 03:37:42 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description Pedro Sampaio 2017-08-14 11:50:27 EDT 
The zmq3 input and output modules in rsyslog before 8.28.0 interpreted description fields as format strings, possibly allowing a format string attack. These format string vulnerabilities were found in function 'initZMQ' in omzmq3.c file and in function 'createSocket' in imzmq3.c file.

Upstream bug:

https://github.com/rsyslog/rsyslog/pull/1565

Upstream patch:

https://github.com/rsyslog/rsyslog/commit/062d0c671a29f7c6f7dff4a2f1f35df375bbb30b

Bug introduced in:

https://github.com/rsyslog/rsyslog/commit/cbff73d94c3a86ed74294fe1265dc5242f9317be

The first affected version is 6.5.0.

References:

https://bugzilla.novell.com/show_bug.cgi?id=1051798
Comment 1 Radovan Sroka 2017-08-15 03:34:03 EDT 
We do not compile these modules.

--enable-imzmq3         Compiles imzmq3 output module [default=no]
--enable-omzmq3         Compiles omzmq3 output module [default=no]

Configure is running without any related option.
This is the same on RHEL and fedora.
Comment 3 Dhiru Kholia 2017-08-17 03:12:49 EDT 
Statement:

This issue did not affect the versions of rsyslog as shipped with Red Hat Enterprise Linux 5, 6, and 7.
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