ArchLinux: 201711-23: firefox: multiple issues
Summary
- CVE-2017-7826 (arbitrary code execution)
Several reported memory safety bugs have been found in Firefox before
57.0. Some of these bugs showed evidence of memory corruption and with
enough effort some of these could probably be exploited to run
arbitrary code.
- CVE-2017-7827 (arbitrary code execution)
Several memory safety bugs have been found in Firefox before 57.0. Some
of these bugs showed evidence of memory corruption and with enough
effort some of these could probably be exploited to run arbitrary code.
- CVE-2017-7828 (arbitrary code execution)
A use-after-free vulnerability can occur in Firefox before 57.0 when
flushing and resizing layout because the PressShell object has been
freed while still in use. This results in a potentially exploitable
crash during these operations.
- CVE-2017-7830 (same-origin policy bypass)
The Resource Timing API in Firefox before 57.0 incorrectly revealed
navigations in cross-origin iframes. This is a same-origin policy
violation and could allow for data theft of URLs loaded by users.
- CVE-2017-7831 (information disclosure)
A vulnerability has been found in Firefox before 57.0 where the
security wrapper does not deny access to some exposed properties using
the deprecated exposedProps mechanism on proxy objects. These
properties should be explicitly unavailable to proxy objects.
- CVE-2017-7832 (content spoofing)
The combined, single character, version of the letter 'i' with any of
the potential accents in unicode, such as acute or grave, can be
spoofed in the addressbar of Firefox before 57.0 by the dotless version
of 'i' followed by the same accent as a second character with most font
sets. This allows for domain spoofing attacks because these combined
domain names do not display as punycode.
- CVE-2017-7833 (content spoofing)
Some Arabic and Indic vowel marker characters can be combined with
Latin characters in a domain name to eclipse the non-Latin character
with some font sets on the addressbar of Firefox before 57.0. The non-Latin character will not be visible to most viewers. This allows for
domain spoofing attacks because these combined domain names do not
display as punycode.
- CVE-2017-7834 (access restriction bypass)
A data: URL loaded in a new tab of Firefox before 57.0 did not inherit
the Content Security Policy (CSP) of the original page, allowing for
bypasses of the policy including the execution of JavaScript. In prior
versions when data: documents also inherited the context of the
original page this would allow for potential cross-site scripting (XSS)
attacks.
- CVE-2017-7835 (access restriction bypass)
Mixed content blocking of insecure (HTTP) sub-resources in a secure
(HTTPS) document was not correctly applied for resources that redirect
from HTTPS to HTTP, allowing content that should be blocked, such as
scripts, to be loaded on a page in Firefox before 57.0.
- CVE-2017-7836 (privilege escalation)
The "pingsender" executable used by the Firefox Health Report before
57.0 dynamically loads a system copy of libcurl, which an attacker
could replace. This allows for privilege escalation as the replaced
libcurl code will run with Firefox's privileges. This attack requires
an attacker have local system access.
- CVE-2017-7837 (same-origin policy bypass)
SVG loaded through tags in Firefox before 57.0 can use
tags within the SVG data to set cookies for that page.
- CVE-2017-7838 (content spoofing)
Punycode format text in Firefox before 57.0 will be displayed for
entire qualified international domain names in some instances when a
sub-domain triggers the punycode display instead of the primary domain
being displayed in native script and the sub-domain only displaying as
punycode. This could be used for limited spoofing attacks due to user
confusion.
- CVE-2017-7839 (cross-site scripting)
Control characters prepended before javascript: URLs pasted in the
addressbar in Firefox before 57.0 can cause the leading characters to
be ignored and the pasted JavaScript to be executed instead of being
blocked. This could be used in social engineering and self-cross-site-scripting (self-XSS) attacks where users are convinced to copy and
paste text into the addressbar.
- CVE-2017-7840 (cross-site scripting)
JavaScript can be injected into an exported bookmarks file by placing
JavaScript code into user-supplied tags in saved bookmarks in Firefox
before 57.0. If the resulting exported HTML file is later opened in a
browser this JavaScript will be executed. This could be used in social
engineering and self-cross-site-scripting (self-XSS) attacks if users
were convinced to add malicious tags to bookmarks, export them, and
then open the resulting file.
- CVE-2017-7842 (information disclosure)
If a document’s Referrer Policy attribute is set to "no-referrer"
sometimes two network requests are made for elements instead of
one in Firefox before 57.0. One of these requests includes the referrer
instead of respecting the set policy to not include a referrer on
requests.
Resolution
Upgrade to 57.0-1.
# pacman -Syu "firefox>=57.0-1"
The problems have been fixed upstream in version 57.0.
References
https://www.mozilla.org/en-US/security/advisories/mfsa2017-24/ https://www.mozilla.org/en-US/security/advisories/mfsa2017-24/#CVE-2017-7826 https://bugzilla.mozilla.org/buglist.cgi?bug_id=1394530%2C1369561%2C1411458%2C1400003%2C1395138%2C1408412%2C1393840%2C1400763%2C1339259%2C1394265%2C1407740%2C1407751%2C1408005%2C1406398%2C1387799%2C1261175%2C1400554%2C1375146%2C1397811%2C1404636%2C1401804 https://www.mozilla.org/en-US/security/advisories/mfsa2017-24/#CVE-2017-7827 https://bugzilla.mozilla.org/buglist.cgi?bug_id=1399922%2C1403646%2C1403716%2C1365894%2C1402876%2C1406154%2C1384121%2C1384615%2C1407375%2C1339485%2C1361432%2C1394031%2C1383019%2C1407032%2C1387845%2C1386490 https://www.mozilla.org/en-US/security/advisories/mfsa2017-24/#CVE-2017-7828 https://bugzilla.mozilla.org/show_bug.cgi?id=1406750 https://bugzilla.mozilla.org/show_bug.cgi?id=1412252 https://www.mozilla.org/en-US/security/advisories/mfsa2017-24/#CVE-2017-7830 https://bugzilla.mozilla.org/show_bug.cgi?id=1408990 https://www.mozilla.org/en-US/security/advisories/mfsa2017-24/#CVE-2017-7831 https://bugzilla.mozilla.org/show_bug.cgi?id=1392026 https://www.mozilla.org/en-US/security/advisories/mfsa2017-24/#CVE-2017-7832 https://bugzilla.mozilla.org/show_bug.cgi?id=1408782 https://www.mozilla.org/en-US/security/advisories/mfsa2017-24/#CVE-2017-7833 https://bugzilla.mozilla.org/show_bug.cgi?id=1370497 https://www.mozilla.org/en-US/security/advisories/mfsa2017-24/#CVE-2017-7834 https://bugzilla.mozilla.org/show_bug.cgi?id=1358009 https://www.mozilla.org/en-US/security/advisories/mfsa2017-24/#CVE-2017-7835 https://bugzilla.mozilla.org/show_bug.cgi?id=1402363 https://www.mozilla.org/en-US/security/advisories/mfsa2017-24/#CVE-2017-7836 https://bugzilla.mozilla.org/show_bug.cgi?id=1401339 https://www.mozilla.org/en-US/security/advisories/mfsa2017-24/#CVE-2017-7837 https://bugzilla.mozilla.org/show_bug.cgi?id=1325923 https://www.mozilla.org/en-US/security/advisories/mfsa2017-24/#CVE-2017-7838 https://bugzilla.mozilla.org/show_bug.cgi?id=1399540 https://www.mozilla.org/en-US/security/advisories/mfsa2017-24/#CVE-2017-7839 https://bugzilla.mozilla.org/show_bug.cgi?id=1402896 https://www.mozilla.org/en-US/security/advisories/mfsa2017-24/#CVE-2017-7840 https://bugzilla.mozilla.org/show_bug.cgi?id=1366420 https://www.mozilla.org/en-US/security/advisories/mfsa2017-24/#CVE-2017-7842 https://bugzilla.mozilla.org/show_bug.cgi?id=1397064 https://security.archlinux.org/CVE-2017-7826 https://security.archlinux.org/CVE-2017-7827 https://security.archlinux.org/CVE-2017-7828 https://security.archlinux.org/CVE-2017-7830 https://security.archlinux.org/CVE-2017-7831 https://security.archlinux.org/CVE-2017-7832 https://security.archlinux.org/CVE-2017-7833 https://security.archlinux.org/CVE-2017-7834 https://security.archlinux.org/CVE-2017-7835 https://security.archlinux.org/CVE-2017-7836 https://security.archlinux.org/CVE-2017-7837 https://security.archlinux.org/CVE-2017-7838 https://security.archlinux.org/CVE-2017-7839 https://security.archlinux.org/CVE-2017-7840 https://security.archlinux.org/CVE-2017-7842
![Dist Arch](/images/distros/dist-arch.png)
Workaround
None.