[SECURITY] [DSA 4788-1] firefox-esr security update

2020-11-1018:53:26

lists.debian.org

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

9.3 High

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:M/Au:N/C:C/I:C/A:C

0.924 High

EPSS

Percentile

98.9%

JSON

Debian Security Advisory DSA-4788-1 [email protected]
https://www.debian.org/security/ Moritz Muehlenhoff
November 10, 2020 https://www.debian.org/security/faq

Package : firefox-esr
CVE ID : CVE-2020-26950

A use-after-free was found in the Mozilla Firefox web browser, which
could potentially result in the execution of arbitrary code.

For the stable distribution (buster), this problem has been fixed in
version 78.4.1esr-1~deb10u1.

We recommend that you upgrade your firefox-esr packages.

For the detailed security status of firefox-esr please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/firefox-esr

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: [email protected]

OSVersionArchitecturePackageVersionFilename
Debian9allicedove-l10n-zh-tw< 1:78.4.2-1~deb9u1icedove-l10n-zh-tw_1:78.4.2-1~deb9u1_all.deb
Debian9allfirefox-esr-l10n-si< 78.4.1esr-1~deb9u1firefox-esr-l10n-si_78.4.1esr-1~deb9u1_all.deb
Debian9allthunderbird-l10n-es-ar< 1:78.4.2-1~deb9u1thunderbird-l10n-es-ar_1:78.4.2-1~deb9u1_all.deb
Debian9alliceweasel-l10n-ms< 1:78.4.1esr-1~deb9u1iceweasel-l10n-ms_1:78.4.1esr-1~deb9u1_all.deb
Debian10allfirefox-esr-l10n-hsb< 78.4.1esr-1~deb10u1firefox-esr-l10n-hsb_78.4.1esr-1~deb10u1_all.deb
Debian10allfirefox-esr-l10n-pl< 78.4.1esr-1~deb10u1firefox-esr-l10n-pl_78.4.1esr-1~deb10u1_all.deb
Debian9allfirefox-esr-l10n-ach< 78.4.1esr-1~deb9u1firefox-esr-l10n-ach_78.4.1esr-1~deb9u1_all.deb
Debian9alliceowl-l10n-et< 1:78.4.2-1~deb9u1iceowl-l10n-et_1:78.4.2-1~deb9u1_all.deb
Debian9alliceweasel-l10n-mk< 1:78.4.1esr-1~deb9u1iceweasel-l10n-mk_1:78.4.1esr-1~deb9u1_all.deb
Debian10allthunderbird-l10n-gl< 1:78.4.2-1~deb10u1thunderbird-l10n-gl_1:78.4.2-1~deb10u1_all.deb

OS	Version	Architecture	Package	Version	Filename
Debian	9	all	icedove-l10n-zh-tw	< 1:78.4.2-1~deb9u1	icedove-l10n-zh-tw_1:78.4.2-1~deb9u1_all.deb
Debian	9	all	firefox-esr-l10n-si	< 78.4.1esr-1~deb9u1	firefox-esr-l10n-si_78.4.1esr-1~deb9u1_all.deb
Debian	9	all	thunderbird-l10n-es-ar	< 1:78.4.2-1~deb9u1	thunderbird-l10n-es-ar_1:78.4.2-1~deb9u1_all.deb
Debian	9	all	iceweasel-l10n-ms	< 1:78.4.1esr-1~deb9u1	iceweasel-l10n-ms_1:78.4.1esr-1~deb9u1_all.deb
Debian	10	all	firefox-esr-l10n-hsb	< 78.4.1esr-1~deb10u1	firefox-esr-l10n-hsb_78.4.1esr-1~deb10u1_all.deb
Debian	10	all	firefox-esr-l10n-pl	< 78.4.1esr-1~deb10u1	firefox-esr-l10n-pl_78.4.1esr-1~deb10u1_all.deb
Debian	9	all	firefox-esr-l10n-ach	< 78.4.1esr-1~deb9u1	firefox-esr-l10n-ach_78.4.1esr-1~deb9u1_all.deb
Debian	9	all	iceowl-l10n-et	< 1:78.4.2-1~deb9u1	iceowl-l10n-et_1:78.4.2-1~deb9u1_all.deb
Debian	9	all	iceweasel-l10n-mk	< 1:78.4.1esr-1~deb9u1	iceweasel-l10n-mk_1:78.4.1esr-1~deb9u1_all.deb
Debian	10	all	thunderbird-l10n-gl	< 1:78.4.2-1~deb10u1	thunderbird-l10n-gl_1:78.4.2-1~deb10u1_all.deb