Bug 1481335 (CVE-2017-12588) - CVE-2017-12588 rsyslog: multiple format string vulnerabilities in zmq3 modules
Summary: CVE-2017-12588 rsyslog: multiple format string vulnerabilities in zmq3 modules
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2017-12588
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:
Blocks: 1481340
TreeView+ depends on / blocked
 
Reported: 2017-08-14 15:50 UTC by Pedro Sampaio
Modified: 2021-02-17 01:43 UTC (History)
11 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
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.
Clone Of:
Environment:
Last Closed: 2017-08-17 07:37:42 UTC
Embargoed:

Attachments (Terms of Use)

Description Pedro Sampaio 2017-08-14 15:50:27 UTC 
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 07:34:03 UTC 
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 07:12:49 UTC 
Statement:

This issue did not affect the versions of rsyslog as shipped with Red Hat Enterprise Linux 5, 6, and 7.
Note You need to log in before you can comment on or make changes to this bug.