ArchLinux: 202004-8: firefox: multiple issues
Summary
- CVE-2020-6821 (information disclosure)
An information disclosure issue has been found in Firefox before 75.0.
When reading from areas partially or fully outside the source resource
with WebGL's copyTexSubImage method, the specification requires the
returned values be zero. Previously, this memory was uninitialized,
leading to potentially sensitive data disclosure.
- CVE-2020-6823 (access restriction bypass)
A security issue has been found in Firefox before 75.0, where a
malicious extension could have called
browser.identity.launchWebAuthFlow, controlling the redirect_uri, and
through the Promise returned, obtain the Auth code and gain access to
the user's account at the service provider.
- CVE-2020-6824 (information disclosure)
A security issue has been found in Firefox before 75.0, where generated
passwords may be identical on the same site between separate private
browsing sessions. Initially, a user opens a Private Browsing Window
and generates a password for a site, then closes the Private Browsing
Window but leaves Firefox open. Subsequently, if the user had opened a
new Private Browsing Window, revisited the same site, and generated a
new password - the generated passwords would have been identical,
rather than independent.
- CVE-2020-6825 (arbitrary code execution)
Several memory safety issues have been found in Firefox before 75.0.
Some of these bugs showed evidence of memory corruption and Mozilla
presumes that with enough effort some of these could have been
exploited to run arbitrary code.
- CVE-2020-6826 (arbitrary code execution)
Several memory safety issues have been found in Firefox before 75.0.
Some of these bugs showed evidence of memory corruption and Mozilla
presumes that with enough effort some of these could have been
exploited to run arbitrary code.
Resolution
Upgrade to 75.0-1.
# pacman -Syu "firefox>=75.0-1"
The problems have been fixed upstream in version 75.0.
References
https://www.mozilla.org/en-US/security/advisories/mfsa2020-12/ https://www.mozilla.org/en-US/security/advisories/mfsa2020-12/#CVE-2020-6821 https://bugzilla.mozilla.org/show_bug.cgi?id=1625404 https://www.mozilla.org/en-US/security/advisories/mfsa2020-12/#CVE-2020-6823 https://bugzilla.mozilla.org/show_bug.cgi?id=1614919 https://www.mozilla.org/en-US/security/advisories/mfsa2020-12/#CVE-2020-6824 https://bugzilla.mozilla.org/show_bug.cgi?id=1621853 https://www.mozilla.org/en-US/security/advisories/mfsa2020-12/#CVE-2020-6825 https://bugzilla.mozilla.org/buglist.cgi?bug_id=1572541%2C1620193%2C1620203 https://www.mozilla.org/en-US/security/advisories/mfsa2020-12/#CVE-2020-6826 https://bugzilla.mozilla.org/buglist.cgi?bug_id=1613009%2C1613195%2C1616734%2C1617488%2C1619229%2C1620719%2C1624897 https://security.archlinux.org/CVE-2020-6821 https://security.archlinux.org/CVE-2020-6823 https://security.archlinux.org/CVE-2020-6824 https://security.archlinux.org/CVE-2020-6825 https://security.archlinux.org/CVE-2020-6826
Workaround
None.
