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AUSCERT Security Bulletin
ASB-2014.0013
Multiple vulnerabilities have been identified in Pidgin
3 February 2014
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AusCERT Security Bulletin Summary
---------------------------------
Product: Pidgin
Operating System: UNIX variants (UNIX, Linux, OSX)
Windows
Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction
Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2014-0020 CVE-2013-6490 CVE-2013-6489
CVE-2013-6487 CVE-2013-6486 CVE-2013-6485
CVE-2013-6484 CVE-2013-6483 CVE-2013-6482
CVE-2013-6481 CVE-2013-6479 CVE-2013-6478
CVE-2013-6477 CVE-2012-6152 CVE-2011-3185
Member content until: Wednesday, March 5 2014
OVERVIEW
A number of vulnerabilities have been identified in Pidgin prior to
version 2.10.8.
IMPACT
The vendor has provided the following details regarding these
vulnerabilities:
"CVE-2012-6152: Many places in the Yahoo! protocol plugin assumed
incoming strings were UTF-8 and failed to transcode from non-UTF-8
encodings. This can lead to a crash when receiving strings that
aren't UTF-8." [1]
"CVE-2013-6477: A remote XMPP user can trigger a crash on some
systems by sending a message with a timestamp in the distant
future." [2]
"CVE-2013-6478: libX11 forcefully exits when Pidgin tries to create
an exceptionally wide tooltip window." [3]
"CVE-2013-6479: A malicious server or man-in-the-middle could send a
malformed HTTP response that could lead to a crash." [4]
"CVE-2013-6481: The Yahoo! protocol plugin failed to validate a
length field before trying to read from a buffer, which could result
in reading past the end of the buffer which could cause a crash."
[5]
"CVE-2013-6482: A malformed Content-Length header could lead to a
NULL pointer dereference." [6 - 8]
"CVE-2013-6483: The XMPP protocol plugin failed to ensure that iq
replies came from the person they were sent to. A remote user could
send a spoofed iq reply and attempt to guess the iq id. This could
allow an attacker to inject fake data or trigger a null pointer
dereference." [9]
"CVE-2013-6484: Incorrect error handling when reading the response
from a STUN server could lead to a crash." [10]
"CVE-2013-6485: A malicious server or man-in-the-middle could cause
a buffer overflow by sending a malformed HTTP response with chunked
Transfer-Encoding with invalid chunk sizes." [11]
"CVE-2013-6486: If a user clicks on a file:// URI in a received IM
in Windows builds of Pidgin, Pidgin attempts to execute the file.
This can be dangerous if the file:// URI is a path on a network
share. This was originally reported in CVE-2011-3185 in 2011 and we
attempted to fix it then, but failed." [12]
"CVE-2013-6487: A malicious server or man-in-the-middle could send a
large value for Content-Length and cause an integer overflow which
could lead to a buffer overflow." [13]
"CVE-2013-6489: A specially crafted emoticon value could cause an
integer overflow which could lead to a buffer overflow." [14]
"CVE-2013-6490: A Content-Length of -1 could lead to a buffer
overflow." [15]
"CVE-2014-0020: A malicious server or man-in-the-middle could
trigger a crash in libpurple by sending a message with fewer than
expected arguments." [16]
MITIGATION
The vendor recommends updating to the latest version of Pidgin to
correct these issues. [1 - 16]
REFERENCES
[1] Yahoo! remote crash from incorrect character encoding
http://www.pidgin.im/news/security/?id=70
[2] Crash handling bad XMPP timestamp
http://www.pidgin.im/news/security/?id=71
[3] Crash when hovering pointer over a long URL
http://www.pidgin.im/news/security/?id=72
[4] Remote crash parsing HTTP responses
http://www.pidgin.im/news/security/?id=73
[5] Remote crash reading Yahoo! P2P message
http://www.pidgin.im/news/security/?id=74
[6] NULL pointer dereference parsing headers in MSN
http://www.pidgin.im/news/security/?id=75
[7] NULL pointer dereference parsing OIM data in MSN
http://www.pidgin.im/news/security/?id=76
[8] CVE-2013-6482
http://www.pidgin.im/news/security/?id=77
[9] XMPP doesn't verify 'from' on some iq replies
http://www.pidgin.im/news/security/?id=78
[10] Crash reading response from STUN server
http://www.pidgin.im/news/security/?id=79
[11] Buffer overflow parsing chunked HTTP responses
http://www.pidgin.im/news/security/?id=80
[12] Pidgin uses clickable links to untrusted executables
http://www.pidgin.im/news/security/?id=81
[13] Buffer overflow in Gadu-Gadu HTTP parsing
http://www.pidgin.im/news/security/?id=82
[14] Buffer overflow in MXit emoticon parsing
http://www.pidgin.im/news/security/?id=83
[15] Buffer overflow in SIMPLE header parsing
http://www.pidgin.im/news/security/?id=84
[16] Remotely triggerable crash in IRC argument parsing
http://www.pidgin.im/news/security/?id=85
AusCERT has made every effort to ensure that the information contained
in this document is accurate. However, the decision to use the information
described is the responsibility of each user or organisation. The decision to
follow or act on information or advice contained in this security bulletin is
the responsibility of each user or organisation, and should be considered in
accordance with your organisation's site policies and procedures. AusCERT
takes no responsibility for consequences which may arise from following or
acting on information or advice contained in this security bulletin.
===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072
Internet Email: auscert@auscert.org.au
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business hours
which are GMT+10:00 (AEST).
On call after hours for member emergencies only.
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