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                             CERT-Renater

                 Note d'Information No. 2018/VULN103
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DATE                : 14/03/2018

HARDWARE PLATFORM(S): /

OPERATING SYSTEM(S): Systems running Firefox versions prior to 59,
                                       ESR 52.7.

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https://www.mozilla.org/en-US/security/advisories/mfsa2018-06/
https://www.mozilla.org/en-US/security/advisories/mfsa2018-07/
_____________________________________________________________________


Mozilla Foundation Security Advisory 2018-06
Security vulnerabilities fixed in Firefox 59

Announced    March 13, 2018
Impact       critical
Products     Firefox
Fixed in     Firefox 59

#CVE-2018-5127: Buffer overflow manipulating SVG animatedPathSegList

Reporter    Nils
Impact      high

Description

A buffer overflow can occur when manipulating the SVG
animatedPathSegList through script. This results in a potentially
exploitable crash.

References

    Bug 1430557


#CVE-2018-5128: Use-after-free manipulating editor selection ranges

Reporter    Nils
Impact      high

Description

A use-after-free vulnerability can occur when manipulating elements,
events, and selection ranges during editor operations. This results in
a potentially exploitable crash.

References

    Bug 1431336


#CVE-2018-5129: Out-of-bounds write with malformed IPC messages

Reporter    James Grant
Impact      high

Description

A lack of parameter validation on IPC messages results in a potential
out-of-bounds write through malformed IPC messages. This can
potentially allow for sandbox escape through memory corruption in the
parent process.

References

    Bug 1428947


#CVE-2018-5130: Mismatched RTP payload type can trigger memory
corruption

Reporter    Tony Paloma
Impact      high

Description

When packets with a mismatched RTP payload type are sent in WebRTC
connections, in some circumstances a potentially exploitable crash is
triggered.

References

    Bug 1433005


#CVE-2018-5131: Fetch API improperly returns cached copies of
no-store/no-cache resources

Reporter    Ben Kelly
Impact      moderate

Description

Under certain circumstances the fetch() API can return transient local
copies of resources that were sent with a no-store or no-cache cache
header instead of downloading a copy from the network as it should.
This can result in previously stored, locally cached data of a website
being accessible to users if they share a common profile while browsing.

References

    Bug 1440775


#CVE-2018-5132: WebExtension Find API can search privileged pages

Reporter    Andy McKay
Impact      moderate

Description

The Find API for WebExtensions can search some privileged pages, such
as about:debugging, if these pages are open in a tab. This could allow
a malicious WebExtension to search for otherwise protected data if a
user has it open.

References

    Bug 1408194


#CVE-2018-5133: Value of the app.support.baseURL preference is not
properly sanitized

Reporter    François Lajeunesse-Robert
Impact      moderate

Description

If the app.support.baseURL preference is changed by a malicious local
program to contain HTML and script content, this content is not
sanitized. It will be executed if a user loads
chrome://browser/content/preferences/in-content/preferences.xul
directly in a tab and executes a search. This stored preference is also
executed whenever an EME video player plugin displays a CDM-disabled
message as a notification message.

References

    Bug 1430511
    Bug 1430974


#CVE-2018-5134: WebExtensions may use view-source: URLs to bypass
content restrictions

Reporter    Abdulrahman Alqabandi
Impact      moderate

Description

WebExtensions may use view-source: URLs to view local file: URL
content, as well as content stored in about:cache, bypassing
restrictions that only allow WebExtensions to view specific content.

References

    Bug 1429379


#CVE-2018-5135: WebExtension browserAction can inject scripts into
unintended contexts

Reporter    Abdulrahman Alqabandi
Impact      moderate

Description

WebExtensions can bypass normal restrictions in some circumstances and
use browser.tabs.executeScript to inject scripts into contexts where
this should not be allowed, such as pages from other WebExtensions or
unprivileged about: pages.

References

    Bug 1431371


#CVE-2018-5136: Same-origin policy violation with data: URL shared
workers

Reporter    Jun Kokatsu
Impact      moderate

Description

A shared worker created from a data: URL in one tab can be shared by
another tab with a different origin, bypassing the same-origin policy.

References

    Bug 1419166


#CVE-2018-5137: Script content can access legacy extension
non-contentaccessible resources

Reporter    Masato Kinugawa
Impact      moderate

Description

A legacy extension's non-contentaccessible, defined resources can be
loaded by an arbitrary web page through script. This script does this
by using a maliciously crafted path string to reference the resources.
Note: this vulnerability does not affect WebExtensions.

References

    Bug 1432870


#CVE-2018-5138: Android Custom Tab address spoofing through long domain
names

Reporter    rugk
Impact      low

Description

A spoofing vulnerability can occur when a malicious site with an
extremely long domain name is opened in an Android Custom Tab (a
browser panel inside another app) and the default browser is Firefox
for Android. This could allow an attacker to spoof which page is
actually loaded and in use.
Note: this issue only affects Firefox for Android. Other versions and
operating systems are unaffected.

References

    Bug 1432624


#CVE-2018-5140: Moz-icon images accessible to web content through
moz-icon: protocol

Reporter    Abdulrahman Alqabandi
Impact      low

Description

Image for moz-icons can be accessed through the moz-icon: protocol
through script in web content even when otherwise prohibited. This
could allow for information leakage of which applications are
associated with specific MIME types by a malicious page.

References

    Bug 1424261


#CVE-2018-5141: DOS attack through notifications Push API

Reporter    Zohar
Impact      low

Description

A vulnerability in the notifications Push API where notifications can
be sent through service workers by web content without direct user
interaction. This could be used to open new tabs in a denial of service
(DOS) attack or to display unwanted content from arbitrary URLs to
users.

References

    Bug 1429093


#CVE-2018-5142: Media Capture and Streams API permissions display
incorrect origin with data: and blob: URLs

Reporter    Jun Kokatsu
Impact      low

Description

If Media Capture and Streams API permission is requested from documents
with data: or blob: URLs, the permission notifications do not properly
display the originating domain. The notification states "Unknown
protocol" as the requestee, leading to user confusion about which site
is asking for this permission.

References

    Bug 1366357


#CVE-2018-5143: Self-XSS pasting javascript: URL with embedded tab into
addressbar

Reporter    Masato Kinugawa
Impact      low

Description

URLs using javascript: have the protocol removed when pasted into the
addressbar to protect users from cross-site scripting (XSS) attacks,
but if a tab character is embedded in the javascript: URL the protocol
is not removed and the script will execute. This could allow users to
be socially engineered to run an XSS attack against themselves.

References

    Bug 1422643


#CVE-2018-5126: Memory safety bugs fixed in Firefox 59

Reporter    Mozilla developers and community
Impact      critical

Description

Mozilla developers and community members Calixte Denizet, Christian
Holler, Sebastian Hengst, Jason Kratzer, Tyson Smith, Ryan
VanderMeulen, Noemi Erli, Karl Tomlinson, Philipp, Gary Kwong, and
Ronald Crane reported memory safety bugs present in Firefox 58. 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.

References

    Memory safety bugs fixed in Firefox 59


#CVE-2018-5125: Memory safety bugs fixed in Firefox 59 and Firefox ESR
52.7

Reporter    Mozilla developers and community
Impact      critical

Description

Mozilla developers and community members Bob Clary, Olli Pettay,
Christian Holler, Nils Ohlmeier, Randell Jesup, Tyson Smith, Ralph
Giles, and Philipp reported memory safety bugs present in Firefox 58
and Firefox ESR 52.6. 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.

References

    Memory safety bugs fixed in Firefox 59 and Firefox ESR 52.7

_____________________________________________________________________


Security vulnerabilities fixed in Firefox ESR 52.7

Announced    March 13, 2018
Impact       critical
Products     Firefox ESR
Fixed in     Firefox ESR 52.7

#CVE-2018-5127: Buffer overflow manipulating SVG animatedPathSegList

Reporter    Nils
Impact      high

Description

A buffer overflow can occur when manipulating the SVG
animatedPathSegList through script. This results in a potentially
exploitable crash.

References

    Bug 1430557


#CVE-2018-5129: Out-of-bounds write with malformed IPC messages

Reporter    James Grant
Impact      high

Description

A lack of parameter validation on IPC messages results in a potential
out-of-bounds write through malformed IPC messages. This can
potentially allow for sandbox escape through memory corruption in the
parent process.

References

    Bug 1428947


#CVE-2018-5130: Mismatched RTP payload type can trigger memory
corruption

Reporter    Tony Paloma
Impact      high

Description

When packets with a mismatched RTP payload type are sent in WebRTC
connections, in some circumstances a potentially exploitable crash is
triggered.

References

    Bug 1433005


#CVE-2018-5131: Fetch API improperly returns cached copies of
no-store/no-cache resources

Reporter    Ben Kelly
Impact      moderate

Description

Under certain circumstances the fetch() API can return transient local
copies of resources that were sent with a no-store or no-cache cache
header instead of downloading a copy from the network as it should.
This can result in previously stored, locally cached data of a website
being accessible to users if they share a common profile while browsing.

References

    Bug 1440775


#CVE-2018-5144: Integer overflow during Unicode conversion

Reporter    Root Object
Impact      moderate

Description

An integer overflow can occur during conversion of text to some Unicode
character sets due to an unchecked length parameter.

References

    Bug 1440926


#CVE-2018-5125: Memory safety bugs fixed in Firefox 59 and Firefox ESR
52.7

Reporter    Mozilla developers and community
Impact      critical

Description

Mozilla developers and community members Bob Clary, Olli Pettay,
Christian Holler, Nils Ohlmeier, Randell Jesup, Tyson Smith, Ralph
Giles, and Philipp reported memory safety bugs present in Firefox 58
and Firefox ESR 52.6. 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.

References

    Memory safety bugs fixed in Firefox 59 and Firefox ESR 52.7


#CVE-2018-5145: Memory safety bugs fixed in Firefox ESR 52.7

Reporter    Mozilla developers and community
Impact      critical

Description

Mozilla developers Jet Villegas and Randell Jesup reported memory
safety bugs present in Firefox ESR 52.6. 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.

References

    Memory safety bugs fixed in Firefox ESR 52.7


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