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Bug 759097 (CVE-2020-26971, CVE-2020-26973, CVE-2020-26974, CVE-2020-26978, CVE-2020-35111, CVE-2020-35113, MFSA-2020-55) - <www-client/firefox{,-bin}-{78.6.0,84.0}: multiple vulnerabilities (MFSA-2020-55)
Summary: <www-client/firefox{,-bin}-{78.6.0,84.0}: multiple vulnerabilities (MFSA-2020...
Status: RESOLVED FIXED
Alias: CVE-2020-26971, CVE-2020-26973, CVE-2020-26974, CVE-2020-26978, CVE-2020-35111, CVE-2020-35113, MFSA-2020-55
Product: Gentoo Security
Classification: Unclassified
Component: Vulnerabilities (show other bugs)
Hardware: All Linux
: Normal major (vote)
Assignee: Gentoo Security
URL:
Whiteboard: A2 [glsa+ cve]
Keywords: CC-ARCHES, STABLEREQ
Depends on:
Blocks: CVE-2020-16042
  Show dependency tree
 
Reported: 2020-12-08 18:32 UTC by Sam James
Modified: 2020-12-23 20:22 UTC (History)
1 user (show)

See Also:
Package list:
www-client/firefox-78.6.0
Runtime testing required: ---
nattka: sanity-check+


Attachments

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Description Sam James archtester gentoo-dev Security 2020-12-08 18:32:38 UTC
Details not yet published. Fixed in 78.6.0.
Comment 1 Larry the Git Cow gentoo-dev 2020-12-16 18:33:14 UTC
The bug has been referenced in the following commit(s):

https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=1788a93db12420a84ff0e3e47caca76ece2a83b1

commit 1788a93db12420a84ff0e3e47caca76ece2a83b1
Author:     Thomas Deutschmann <whissi@gentoo.org>
AuthorDate: 2020-12-16 18:32:07 +0000
Commit:     Thomas Deutschmann <whissi@gentoo.org>
CommitDate: 2020-12-16 18:32:07 +0000

    www-client/firefox: amd64 & x86 stable (bug #759097)
    
    Bug: https://bugs.gentoo.org/759097
    Package-Manager: Portage-3.0.12, Repoman-3.0.2
    Signed-off-by: Thomas Deutschmann <whissi@gentoo.org>

 www-client/firefox/firefox-78.6.0.ebuild | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
Comment 2 Thomas Deutschmann gentoo-dev Security 2020-12-16 18:37:56 UTC
CVE-2020-16042: Operations on a BigInt could have caused uninitialized memory to be exposed

Impact
    critical

Description

When a BigInt was right-shifted the backing store was not properly cleared, allowing uninitialized memory to be read.
References


CVE-2020-26971: Heap buffer overflow in WebGL

Impact
    high

Description

Certain blit values provided by the user were not properly constrained leading to a heap buffer overflow on some video drivers.


CVE-2020-26973: CSS Sanitizer performed incorrect sanitization

Impact
    high

Description

Certain input to the CSS Sanitizer confused it, resulting in incorrect components being removed. This could have been used as a sanitizer bypass.


CVE-2020-26974: Incorrect cast of StyleGenericFlexBasis resulted in a heap use-after-free

Impact
    high

Description

When flex-basis was used on a table wrapper, a StyleGenericFlexBasis object could have been incorrectly cast to the wrong type. This resulted in a heap user-after-free, memory corruption, and a potentially exploitable crash.


CVE-2020-26978: Internal network hosts could have been probed by a malicious webpage

Impact
    moderate

Description

Using techniques that built on the slipstream research, a malicious webpage could have exposed both an internal network's hosts as well as services running on the user's local machine.


CVE-2020-35111: The proxy.onRequest API did not catch view-source URLs

Impact
    low

Description

When an extension with the proxy permission registered to receive <all_urls>, the proxy.onRequest callback was not triggered for view-source URLs. While web content cannot navigate to such URLs, a user opening View Source could have inadvertently leaked their IP address.


CVE-2020-35113: Memory safety bugs fixed in Firefox 84 and Firefox ESR 78.6

Impact
    high

Description

Mozilla developer Christian Holler reported memory safety bugs present in Firefox 83 and Firefox ESR 78.5. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code.
Comment 3 Sam James archtester gentoo-dev Security 2020-12-17 03:59:19 UTC
arm64 done

all arches done
Comment 4 Sam James archtester gentoo-dev Security 2020-12-17 04:05:21 UTC
Please cleanup.
Comment 5 Larry the Git Cow gentoo-dev 2020-12-17 06:05:55 UTC
The bug has been referenced in the following commit(s):

https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=83895af97c22efc892ad77cd1d5861cadb4f759d

commit 83895af97c22efc892ad77cd1d5861cadb4f759d
Author:     Joonas Niilola <juippis@gentoo.org>
AuthorDate: 2020-12-17 06:04:37 +0000
Commit:     Joonas Niilola <juippis@gentoo.org>
CommitDate: 2020-12-17 06:04:37 +0000

    www-client/firefox: remove vulnerable version 78.5.0
    
    Bug: https://bugs.gentoo.org/759097
    Signed-off-by: Joonas Niilola <juippis@gentoo.org>

 www-client/firefox/Manifest              |   96 ---
 www-client/firefox/firefox-78.5.0.ebuild | 1121 ------------------------------
 2 files changed, 1217 deletions(-)
Comment 6 Sam James archtester gentoo-dev Security 2020-12-17 06:10:39 UTC
Thanks!
Comment 7 Larry the Git Cow gentoo-dev 2020-12-17 14:52:43 UTC
The bug has been referenced in the following commit(s):

https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=5d7e665091850f00157250cdbe3d279f0ece6181

commit 5d7e665091850f00157250cdbe3d279f0ece6181
Author:     Thomas Deutschmann <whissi@gentoo.org>
AuthorDate: 2020-12-17 14:51:36 +0000
Commit:     Thomas Deutschmann <whissi@gentoo.org>
CommitDate: 2020-12-17 14:52:37 +0000

    www-client/firefox-bin: security cleanup
    
    Bug: https://bugs.gentoo.org/759097
    Package-Manager: Portage-3.0.12, Repoman-3.0.2
    Signed-off-by: Thomas Deutschmann <whissi@gentoo.org>

 www-client/firefox-bin/Manifest                  | 194 -----------
 www-client/firefox-bin/firefox-bin-78.5.0.ebuild | 411 -----------------------
 www-client/firefox-bin/firefox-bin-83.0.ebuild   | 411 -----------------------
 3 files changed, 1016 deletions(-)

https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=02d58c7740e5ca7b17e5e93ae95346eb146c1c82

commit 02d58c7740e5ca7b17e5e93ae95346eb146c1c82
Author:     Thomas Deutschmann <whissi@gentoo.org>
AuthorDate: 2020-12-17 14:51:10 +0000
Commit:     Thomas Deutschmann <whissi@gentoo.org>
CommitDate: 2020-12-17 14:52:37 +0000

    www-client/firefox: security cleanup
    
    Bug: https://bugs.gentoo.org/759097
    Package-Manager: Portage-3.0.12, Repoman-3.0.2
    Signed-off-by: Thomas Deutschmann <whissi@gentoo.org>

 www-client/firefox/Manifest            |   97 ---
 www-client/firefox/firefox-83.0.ebuild | 1119 --------------------------------
 2 files changed, 1216 deletions(-)
Comment 8 Thomas Deutschmann gentoo-dev Security 2020-12-23 01:09:04 UTC
New GLSA request filed.
Comment 9 GLSAMaker/CVETool Bot gentoo-dev 2020-12-23 20:22:10 UTC
This issue was resolved and addressed in
 GLSA 202012-20 at https://security.gentoo.org/glsa/202012-20
by GLSA coordinator Thomas Deutschmann (whissi).