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AUSCERT Security Bulletin
ASB-2018.0038
Mozilla Foundation Security Advisory 2018-04
30 January 2018
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AusCERT Security Bulletin Summary
---------------------------------
Product: Mozilla Thunderbird
Operating System: UNIX variants (UNIX, Linux, OSX)
Windows
Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction
Denial of Service -- Remote with User Interaction
Provide Misleading Information -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2018-5117 CVE-2018-5104 CVE-2018-5103
CVE-2018-5102 CVE-2018-5099 CVE-2018-5098
CVE-2018-5097 CVE-2018-5096 CVE-2018-5095
CVE-2018-5089
Member content until: Thursday, March 1 2018
Reference: ASB-2018.0036
ESB-2018.0260
ESB-2018.0258
OVERVIEW
Multiple critical vulnerabilities have been identified in Mozilla
Thunderbird prior to version 52.6 [1]
IMPACT
Mozilla have provided the following details regarding the
vulnerabilities:
"CVE-2018-5095: Integer overflow in Skia library during edge builder allocation
REPORTER Anonymous
IMPACT HIGH
Description
An integer overflow vulnerability in the Skia library when allocating
memory for edge builders on some systems with at least 8 GB of RAM. This
results in the use of uninitialized memory, resulting in a potentially
exploitable crash.
CVE-2018-5096: Use-after-free while editing form elements
REPORTER Nils
IMPACT HIGH
Description
A use-after-free vulnerability can occur while editing events in form
elements on a page, resulting in a potentially exploitable crash.
CVE-2018-5097: Use-after-free when source document is manipulated during
XSLT
REPORTER Nils
IMPACT HIGH
Description
A use-after-free vulnerability can occur during XSL transformations when
the source document for the transformation is manipulated by script
content during the transformation. This results in a potentially
exploitable crash.
CVE-2018-5098: Use-after-free while manipulating form input elements
REPORTER Nils
IMPACT HIGH
Description
A use-after-free vulnerability can occur when form input elements,
focus, and selections are manipulated by script content. This
results in a potentially exploitable crash.
CVE-2018-5099: Use-after-free with widget listener
REPORTER Nils
IMPACT HIGH
Description
A use-after-free vulnerability can occur when the widget listener is
holding strong references to browser objects that have previously been
freed, resulting in a potentially exploitable crash when these references
are used.
CVE-2018-5102: Use-after-free in HTML media elements
REPORTER Nils
IMPACT HIGH
Description
A use-after-free vulnerability can occur when manipulating HTML media
elements with media streams, resulting in a potentially exploitable crash.
CVE-2018-5103: Use-after-free during mouse event handling
REPORTER Nils
IMPACT HIGH
Description
A use-after-free vulnerability can occur during mouse event handling
due to issues with multiprocess support. This results in a potentially
exploitable crash.
CVE-2018-5104: Use-after-free during font face manipulation
REPORTER Nils
IMPACT HIGH
Description
A use-after-free vulnerability can occur during font face manipulation
when a font face is freed while still in use, resulting in a
potentially exploitable crash.
CVE-2018-5117: URL spoofing with right-to-left text aligned left-to-right
REPORTER xisigr of Tencent's Xuanwu Lab
IMPACT MODERATE
Description
If right-to-left text is used in the addressbar with left-to-right
alignment, it is possible in some circumstances to scroll this text to
spoof the displayed URL. This issue could result in the wrong URL being
displayed as a location, which can mislead users to believe they are on
a different site than the one loaded.
CVE-2018-5089: Memory safety bugs fixed in Firefox 58, Firefox ESR 52.6,
and Thunderbird 52.6
REPORTER Mozilla developers and community
IMPACT CRITICAL
Description
Mozilla developers and community members Christian Holler, Jason Kratzer,
Marcia Knous, Nathan Froyd, Oriol Brufau, Ronald Crane, Randell Jesup,
Tyson Smith, Emilio Cobos Ãlvarez, Ryan VanderMeulen, Sebastian Hengst,
Karl Tomlinson, Xidorn Quan, Ludovic Hirlimann, and Jason Orendorff
reported memory safety bugs present in Firefox 57 and Firefox ESR 52.5.
Some of these bugs showed evidence of memory corruption and we presume
that with enough effort that some of these could be exploited to run
arbitrary code."
MITIGATION
Users are advised to update to the latest versions to address these
issues. [1]
REFERENCES
[1] Mozilla Foundation Security Advisory 2018-04
https://www.mozilla.org/en-US/security/advisories/mfsa2018-04/
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.
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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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