-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2021.2240
                  USN-4995-2: Thunderbird vulnerabilities
                               28 June 2021

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Thunderbird
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
                   Denial of Service               -- Remote with User Interaction
                   Provide Misleading Information  -- Remote with User Interaction
                   Access Confidential Data        -- Remote with User Interaction
                   Reduced Security                -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2021-29967 CVE-2021-29957 CVE-2021-29956
                   CVE-2021-29949 CVE-2021-29948 CVE-2021-29946
                   CVE-2021-29945 CVE-2021-24002 CVE-2021-23999
                   CVE-2021-23998 CVE-2021-23995 CVE-2021-23994
                   CVE-2021-23993 CVE-2021-23992 CVE-2021-23991
                   CVE-2021-23987 CVE-2021-23984 CVE-2021-23982
                   CVE-2021-23981 CVE-2021-23961 

Reference:         ESB-2021.2212
                   ESB-2021.2159
                   ESB-2021.1977
                   ESB-2021.1971

Original Bulletin: 
   https://ubuntu.com/security/notices/USN-4995-2

- --------------------------BEGIN INCLUDED TEXT--------------------

USN-4995-2: Thunderbird vulnerabilities
25 June 2021

Several security issues were fixed in Thunderbird.
Releases

  o Ubuntu 18.04 LTS

Packages

  o thunderbird - Mozilla Open Source mail and newsgroup client

Details

USN-4995-1 fixed vulnerabilities in Thunderbird. This update provides
the corresponding updates for Ubuntu 18.04 LTS.

Original advisory details:

Multiple security issues were discovered in Thunderbird. If a user were
tricked into opening a specially crafted website in a browsing context, an
attacker could potentially exploit these to cause a denial of service,
obtain sensitive information, spoof the UI, bypass security restrictions,
or execute arbitrary code. ( CVE-2021-23961 , CVE-2021-23981 ,
CVE-2021-23982 , CVE-2021-23987 , CVE-2021-23994 , CVE-2021-23998 ,
CVE-2021-23999 , CVE-2021-29945 , CVE-2021-29946 , CVE-2021-29967 )

It was discovered that extensions could open popup windows with control
of the window title in some circumstances. If a user were tricked into
installing a specially crafted extension, an attacker could potentially
exploit this to spoof a website and trick the user into providing
credentials. ( CVE-2021-23984 )

Multiple security issues were discovered in Thunderbird's OpenPGP
integration. If a user were tricked into importing a specially crafted
key in some circumstances, an attacker could potentially exploit this
to cause a denial of service (inability to send encrypted email) or
confuse the user. ( CVE-2021-23991 , CVE-2021-23992 , CVE-2021-23993 )

A use-after-free was discovered when Responsive Design Mode was
enabled. If a user were tricked into opening a specially crafted
website with Responsive Design Mode enabled, an attacker could
potentially exploit this to cause a denial of service, or execute
arbitrary code. ( CVE-2021-23995 )

It was discovered that Thunderbird mishandled ftp URLs with encoded
newline characters. If a user were tricked into clicking on a specially
crafted link, an attacker could potentially exploit this to send arbitrary
FTP commands. ( CVE-2021-24002 )

It was discovered that Thunderbird wrote signatures to disk and read them
back during verification. A local attacker could potentially exploit this
to replace the data with another signature file. ( CVE-2021-29948 )

It was discovered that Thunderbird might load an alternative OTR
library. If a user were tricked into copying a specially crafted
library to one of Thunderbird's search paths, an attacker could
potentially exploit this to execute arbitrary code. ( CVE-2021-29949 )

It was discovered that secret keys imported into Thunderbird were
stored unencrypted. A local attacker could potentially exploit this to
obtain private keys. ( CVE-2021-29956 )

It was discovered that Thunderbird did not indicate when an inline signed
or encrypted message contained additional unprotected parts.
( CVE-2021-29957 )

Update instructions

The problem can be corrected by updating your system to the following package
versions:

Ubuntu 18.04

  o thunderbird - 1:78.11.0+build1-0ubuntu0.18.04.2

After a standard system update you need to restart Thunderbird to make
all the necessary changes.

References

  o CVE-2021-29948
  o CVE-2021-29957
  o CVE-2021-23992
  o CVE-2021-23961
  o CVE-2021-23982
  o CVE-2021-23999
  o CVE-2021-23998
  o CVE-2021-23984
  o CVE-2021-24002
  o CVE-2021-23995
  o CVE-2021-23993
  o CVE-2021-23981
  o CVE-2021-29946
  o CVE-2021-29949
  o CVE-2021-23987
  o CVE-2021-23994
  o CVE-2021-29956
  o CVE-2021-29945
  o CVE-2021-23991
  o CVE-2021-29967

Related notices

  o USN-4926-1 : firefox-locale-ml, firefox-locale-ro, firefox-locale-zu,
    firefox-locale-id, firefox-locale-ku, firefox-locale-mn, firefox-locale-hu,
    firefox-locale-hy, firefox-locale-sr, firefox-locale-zh-hans,
    firefox-locale-pt, firefox-dev, firefox-locale-ms, firefox-locale-fr,
    firefox-locale-ko, firefox-locale-or, firefox-locale-ia, firefox-locale-ur,
    firefox-mozsymbols, firefox-locale-af, firefox-locale-hsb,
    firefox-locale-km, firefox-locale-ne, firefox-locale-gn, firefox-locale-kk,
    firefox-locale-th, firefox-locale-te, firefox-locale-tr, firefox-locale-sv,
    firefox-locale-csb, firefox-locale-mr, firefox-locale-he,
    firefox-locale-cy, firefox-locale-be, firefox-locale-sl, firefox-locale-ja,
    firefox-locale-my, firefox-locale-lv, firefox-locale-fa, firefox-locale-nb,
    firefox-locale-ta, firefox-locale-vi, firefox-locale-ast,
    firefox-locale-uk, firefox-locale-fi, firefox-locale-el, firefox-locale-sq,
    firefox-locale-bs, firefox-locale-sw, firefox-locale-sk, firefox-locale-is,
    firefox-locale-gl, firefox-locale-nso, firefox-locale-pl,
    firefox-locale-an, firefox-locale-de, firefox-locale-da,
    firefox-geckodriver, firefox-locale-szl, firefox-locale-oc,
    firefox-locale-it, firefox-locale-mai, firefox-locale-nl,
    firefox-locale-cs, firefox-locale-as, firefox-locale-cak,
    firefox-locale-mk, firefox-locale-hr, firefox-locale-fy, firefox-locale-en,
    firefox-locale-ka, firefox-locale-bg, firefox-locale-hi,
    firefox-locale-zh-hant, firefox-locale-kn, firefox-locale-lt,
    firefox-locale-br, firefox, firefox-locale-lg, firefox-locale-ca,
    firefox-locale-ru, firefox-locale-si, firefox-locale-pa, firefox-locale-nn,
    firefox-locale-eo, firefox-locale-az, firefox-locale-uz, firefox-locale-eu,
    firefox-locale-xh, firefox-locale-ar, firefox-locale-es, firefox-locale-gu,
    firefox-locale-et, firefox-locale-ga, firefox-locale-bn, firefox-locale-gd,
    firefox-locale-kab
  o USN-4717-1 : firefox-locale-ml, firefox-locale-ro, firefox-locale-zu,
    firefox-locale-id, firefox-locale-ku, firefox-locale-mn, firefox-locale-hu,
    firefox-locale-hy, firefox-locale-sr, firefox-locale-zh-hans,
    firefox-locale-pt, firefox-dev, firefox-locale-ms, firefox-locale-fr,
    firefox-locale-ko, firefox-locale-or, firefox-locale-ia, firefox-locale-ur,
    firefox-mozsymbols, firefox-locale-af, firefox-locale-hsb,
    firefox-locale-km, firefox-locale-ne, firefox-locale-gn, firefox-locale-kk,
    firefox-locale-th, firefox-locale-te, firefox-locale-tr, firefox-locale-sv,
    firefox-locale-csb, firefox-locale-mr, firefox-locale-he,
    firefox-locale-cy, firefox-locale-be, firefox-locale-sl, firefox-locale-ja,
    firefox-locale-my, firefox-locale-lv, firefox-locale-fa, firefox-locale-nb,
    firefox-locale-ta, firefox-locale-vi, firefox-locale-ast,
    firefox-locale-uk, firefox-locale-fi, firefox-locale-el, firefox-locale-sq,
    firefox-locale-bs, firefox-locale-sw, firefox-locale-sk, firefox-locale-is,
    firefox-locale-gl, firefox-locale-nso, firefox-locale-pl,
    firefox-locale-an, firefox-locale-de, firefox-locale-da,
    firefox-geckodriver, firefox-locale-oc, firefox-locale-it,
    firefox-locale-mai, firefox-locale-nl, firefox-locale-cs,
    firefox-locale-as, firefox-locale-cak, firefox-locale-mk,
    firefox-locale-hr, firefox-locale-fy, firefox-locale-en, firefox-locale-ka,
    firefox-locale-bg, firefox-locale-hi, firefox-locale-zh-hant,
    firefox-locale-kn, firefox-locale-lt, firefox-locale-br, firefox,
    firefox-locale-lg, firefox-locale-ca, firefox-locale-ru, firefox-locale-si,
    firefox-locale-pa, firefox-locale-nn, firefox-locale-eo, firefox-locale-az,
    firefox-locale-uz, firefox-locale-eu, firefox-locale-xh, firefox-locale-ar,
    firefox-locale-es, firefox-locale-gu, firefox-locale-et, firefox-locale-ga,
    firefox-locale-bn, firefox-locale-gd, firefox-locale-kab
  o USN-4995-1 : thunderbird-locale-nb-no, thunderbird-locale-th,
    thunderbird-locale-gl, thunderbird-locale-vi, thunderbird-locale-bg,
    thunderbird-locale-pt-pt, thunderbird-locale-nn-no, thunderbird-locale-es,
    thunderbird-locale-sv-se, thunderbird-locale-da, thunderbird-locale-id,
    thunderbird-locale-ta-lk, thunderbird-locale-ka, thunderbird-locale-pt-br,
    thunderbird-locale-si, thunderbird-locale-en, thunderbird-locale-nl,
    thunderbird-dev, thunderbird-locale-ca, thunderbird-locale-ja,
    thunderbird-locale-kk, thunderbird-locale-zh-cn, thunderbird-locale-fi,
    thunderbird-locale-he, thunderbird-locale-cy, thunderbird-locale-tr,
    thunderbird-locale-bn, thunderbird-locale-zh-hant,
    thunderbird-locale-en-gb, thunderbird-locale-ko, thunderbird-locale-ta,
    thunderbird-locale-eu, thunderbird-locale-et, xul-ext-calendar-timezones,
    xul-ext-gdata-provider, thunderbird-locale-ms, thunderbird-locale-fy,
    thunderbird-locale-pl, thunderbird-locale-it, thunderbird-locale-ast,
    thunderbird-locale-sr, thunderbird-locale-el, thunderbird-locale-be,
    thunderbird-locale-nn, thunderbird-locale-uk, thunderbird-locale-gd,
    thunderbird-locale-fr, thunderbird-locale-bn-bd, thunderbird-locale-sq,
    thunderbird-locale-uz, thunderbird-locale-pt, thunderbird-locale-es-es,
    thunderbird-locale-fy-nl, thunderbird-locale-is, thunderbird-locale-lt,
    thunderbird-locale-ru, thunderbird, thunderbird-locale-nb,
    thunderbird-locale-pa-in, thunderbird-locale-zh-hans,
    thunderbird-locale-sk, thunderbird-locale-hr, thunderbird-mozsymbols,
    thunderbird-locale-sl, thunderbird-locale-hsb, thunderbird-locale-en-us,
    thunderbird-locale-zh-tw, thunderbird-locale-mk, xul-ext-lightning,
    thunderbird-locale-ga, thunderbird-locale-hu, thunderbird-locale-pa,
    thunderbird-locale-fa, thunderbird-locale-af, thunderbird-gnome-support,
    thunderbird-locale-cak, thunderbird-locale-hy, thunderbird-locale-kab,
    thunderbird-locale-rm, thunderbird-locale-de, thunderbird-locale-es-ar,
    thunderbird-locale-br, thunderbird-locale-ar, thunderbird-locale-dsb,
    thunderbird-locale-cs, thunderbird-locale-ro, thunderbird-locale-ga-ie,
    thunderbird-locale-sv
  o USN-4978-1 : firefox-locale-ml, firefox-locale-ro, firefox-locale-zu,
    firefox-locale-id, firefox-locale-ku, firefox-locale-mn, firefox-locale-hu,
    firefox-locale-hy, firefox-locale-sr, firefox-locale-zh-hans,
    firefox-locale-pt, firefox-dev, firefox-locale-ms, firefox-locale-fr,
    firefox-locale-ko, firefox-locale-or, firefox-locale-ia, firefox-locale-ur,
    firefox-mozsymbols, firefox-locale-af, firefox-locale-hsb,
    firefox-locale-km, firefox-locale-ne, firefox-locale-gn, firefox-locale-kk,
    firefox-locale-th, firefox-locale-te, firefox-locale-tr, firefox-locale-sv,
    firefox-locale-csb, firefox-locale-mr, firefox-locale-he,
    firefox-locale-cy, firefox-locale-be, firefox-locale-sl, firefox-locale-ja,
    firefox-locale-my, firefox-locale-lv, firefox-locale-fa, firefox-locale-nb,
    firefox-locale-ta, firefox-locale-vi, firefox-locale-ast,
    firefox-locale-uk, firefox-locale-fi, firefox-locale-el, firefox-locale-sq,
    firefox-locale-bs, firefox-locale-sw, firefox-locale-sk, firefox-locale-is,
    firefox-locale-gl, firefox-locale-nso, firefox-locale-pl,
    firefox-locale-an, firefox-locale-de, firefox-locale-da,
    firefox-geckodriver, firefox-locale-szl, firefox-locale-oc,
    firefox-locale-it, firefox-locale-mai, firefox-locale-nl,
    firefox-locale-cs, firefox-locale-as, firefox-locale-cak,
    firefox-locale-mk, firefox-locale-hr, firefox-locale-fy, firefox-locale-en,
    firefox-locale-ka, firefox-locale-bg, firefox-locale-hi,
    firefox-locale-zh-hant, firefox-locale-kn, firefox-locale-lt,
    firefox-locale-br, firefox, firefox-locale-lg, firefox-locale-ca,
    firefox-locale-ru, firefox-locale-si, firefox-locale-pa, firefox-locale-nn,
    firefox-locale-eo, firefox-locale-az, firefox-locale-uz, firefox-locale-eu,
    firefox-locale-xh, firefox-locale-ar, firefox-locale-es, firefox-locale-gu,
    firefox-locale-et, firefox-locale-ga, firefox-locale-bn, firefox-locale-gd,
    firefox-locale-kab
  o USN-4893-1 : firefox-locale-ml, firefox-locale-ro, firefox-locale-zu,
    firefox-locale-id, firefox-locale-ku, firefox-locale-mn, firefox-locale-hu,
    firefox-locale-hy, firefox-locale-sr, firefox-locale-zh-hans,
    firefox-locale-pt, firefox-dev, firefox-locale-ms, firefox-locale-fr,
    firefox-locale-ko, firefox-locale-or, firefox-locale-ia, firefox-locale-ur,
    firefox-mozsymbols, firefox-locale-af, firefox-locale-hsb,
    firefox-locale-km, firefox-locale-ne, firefox-locale-gn, firefox-locale-kk,
    firefox-locale-th, firefox-locale-te, firefox-locale-tr, firefox-locale-sv,
    firefox-locale-csb, firefox-locale-mr, firefox-locale-he,
    firefox-locale-cy, firefox-locale-be, firefox-locale-sl, firefox-locale-ja,
    firefox-locale-my, firefox-locale-lv, firefox-locale-fa, firefox-locale-nb,
    firefox-locale-ta, firefox-locale-vi, firefox-locale-ast,
    firefox-locale-uk, firefox-locale-fi, firefox-locale-el, firefox-locale-sq,
    firefox-locale-bs, firefox-locale-sw, firefox-locale-sk, firefox-locale-is,
    firefox-locale-gl, firefox-locale-nso, firefox-locale-pl,
    firefox-locale-an, firefox-locale-de, firefox-locale-da,
    firefox-geckodriver, firefox-locale-szl, firefox-locale-oc,
    firefox-locale-it, firefox-locale-mai, firefox-locale-nl,
    firefox-locale-cs, firefox-locale-as, firefox-locale-cak,
    firefox-locale-mk, firefox-locale-hr, firefox-locale-fy, firefox-locale-en,
    firefox-locale-ka, firefox-locale-bg, firefox-locale-hi,
    firefox-locale-zh-hant, firefox-locale-kn, firefox-locale-lt,
    firefox-locale-br, firefox, firefox-locale-lg, firefox-locale-ca,
    firefox-locale-ru, firefox-locale-si, firefox-locale-pa, firefox-locale-nn,
    firefox-locale-eo, firefox-locale-az, firefox-locale-uz, firefox-locale-eu,
    firefox-locale-xh, firefox-locale-ar, firefox-locale-es, firefox-locale-gu,
    firefox-locale-et, firefox-locale-ga, firefox-locale-bn, firefox-locale-gd,
    firefox-locale-kab

- --------------------------END INCLUDED TEXT--------------------

You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.

NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members.  As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.

NOTE: This is only the original release of the security bulletin.  It may
not be updated when updates to the original are made.  If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.

Contact information for the authors of the original document is included
in the Security Bulletin above.  If you have any questions or need further
information, please contact them directly.

Previous advisories and external security bulletins can be retrieved from:

        https://www.auscert.org.au/bulletins/

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967
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=B6s3
-----END PGP SIGNATURE-----