Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2021.2212 USN-4995-1: Thunderbird vulnerabilities 23 June 2021 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Thunderbird Publisher: Ubuntu Operating System: Ubuntu Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction Cross-site Scripting -- 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-2021.2159 ESB-2021.1977 ESB-2021.1971 Original Bulletin: https://ubuntu.com/security/notices/USN-4995-1 - --------------------------BEGIN INCLUDED TEXT-------------------- USN-4995-1: Thunderbird vulnerabilities 22 June 2021 Several security issues were fixed in Thunderbird. Releases o Ubuntu 21.04 o Ubuntu 20.10 o Ubuntu 20.04 LTS Packages o thunderbird - Mozilla Open Source mail and newsgroup client 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 21.04 o thunderbird - 1:78.11.0+build1-0ubuntu0.21.04.2 Ubuntu 20.10 o thunderbird - 1:78.11.0+build1-0ubuntu0.20.10.2 Ubuntu 20.04 o thunderbird - 1:78.11.0+build1-0ubuntu0.20.04.2 After a standard system update you need to restart Thunderbird to make all the necessary changes. References o CVE-2021-23961 o CVE-2021-29967 o CVE-2021-23991 o CVE-2021-23995 o CVE-2021-23982 o CVE-2021-23994 o CVE-2021-23981 o CVE-2021-23987 o CVE-2021-23992 o CVE-2021-23984 o CVE-2021-29956 o CVE-2021-29957 o CVE-2021-29948 o CVE-2021-29949 o CVE-2021-23993 o CVE-2021-24002 o CVE-2021-23999 o CVE-2021-23998 o CVE-2021-29945 o CVE-2021-29946 Related notices o USN-4926-1 : firefox-locale-km, firefox-locale-fa, firefox-locale-my, firefox-locale-th, firefox-locale-hu, firefox, firefox-locale-kk, firefox-locale-ku, firefox-locale-sv, firefox-locale-kab, firefox-locale-ru, firefox-locale-ast, firefox-locale-lv, firefox-locale-da, firefox-locale-is, firefox-locale-ko, firefox-locale-an, firefox-locale-nn, firefox-locale-tr, firefox-locale-or, firefox-locale-uk, firefox-locale-fr, firefox-geckodriver, firefox-locale-nb, firefox-locale-te, firefox-locale-br, firefox-dev, firefox-locale-gd, firefox-locale-oc, firefox-locale-et, firefox-locale-zh-hans, firefox-locale-ca, firefox-locale-mai, firefox-locale-sl, firefox-mozsymbols, firefox-locale-xh, firefox-locale-mk, firefox-locale-hr, firefox-locale-ta, firefox-locale-az, firefox-locale-bn, firefox-locale-es, firefox-locale-sk, firefox-locale-nl, firefox-locale-ur, firefox-locale-mn, firefox-locale-ga, firefox-locale-gn, firefox-locale-cak, firefox-locale-sq, firefox-locale-lg, firefox-locale-en, firefox-locale-gl, firefox-locale-hsb, firefox-locale-lt, firefox-locale-he, firefox-locale-bs, firefox-locale-as, firefox-locale-ar, firefox-locale-uz, firefox-locale-pt, firefox-locale-fi, firefox-locale-cy, firefox-locale-nso, firefox-locale-pa, firefox-locale-ml, firefox-locale-szl, firefox-locale-pl, firefox-locale-zh-hant, firefox-locale-be, firefox-locale-eo, firefox-locale-cs, firefox-locale-fy, firefox-locale-ro, firefox-locale-bg, firefox-locale-eu, firefox-locale-sr, firefox-locale-csb, firefox-locale-el, firefox-locale-ms, firefox-locale-ia, firefox-locale-ka, firefox-locale-hy, firefox-locale-sw, firefox-locale-vi, firefox-locale-kn, firefox-locale-gu, firefox-locale-ne, firefox-locale-hi, firefox-locale-ja, firefox-locale-af, firefox-locale-de, firefox-locale-id, firefox-locale-zu, firefox-locale-si, firefox-locale-mr, firefox-locale-it o USN-4717-1 : firefox-locale-km, firefox-locale-fa, firefox-locale-my, firefox-locale-th, firefox-locale-hu, firefox, firefox-locale-kk, firefox-locale-ku, firefox-locale-sv, firefox-locale-kab, firefox-locale-ru, firefox-locale-ast, firefox-locale-lv, firefox-locale-da, firefox-locale-is, firefox-locale-ko, firefox-locale-an, firefox-locale-nn, firefox-locale-tr, firefox-locale-or, firefox-locale-uk, firefox-locale-fr, firefox-geckodriver, firefox-locale-nb, firefox-locale-te, firefox-locale-br, firefox-dev, firefox-locale-gd, firefox-locale-oc, firefox-locale-et, firefox-locale-zh-hans, firefox-locale-ca, firefox-locale-mai, firefox-locale-sl, firefox-mozsymbols, firefox-locale-xh, firefox-locale-mk, firefox-locale-hr, firefox-locale-ta, firefox-locale-az, firefox-locale-bn, firefox-locale-es, firefox-locale-sk, firefox-locale-nl, firefox-locale-ur, firefox-locale-mn, firefox-locale-ga, firefox-locale-gn, firefox-locale-cak, firefox-locale-sq, firefox-locale-lg, firefox-locale-en, firefox-locale-gl, firefox-locale-hsb, firefox-locale-lt, firefox-locale-he, firefox-locale-bs, firefox-locale-as, firefox-locale-ar, firefox-locale-uz, firefox-locale-pt, firefox-locale-fi, firefox-locale-cy, firefox-locale-nso, firefox-locale-pa, firefox-locale-ml, firefox-locale-pl, firefox-locale-zh-hant, firefox-locale-be, firefox-locale-eo, firefox-locale-cs, firefox-locale-fy, firefox-locale-ro, firefox-locale-bg, firefox-locale-eu, firefox-locale-sr, firefox-locale-csb, firefox-locale-el, firefox-locale-ms, firefox-locale-ia, firefox-locale-ka, firefox-locale-hy, firefox-locale-sw, firefox-locale-vi, firefox-locale-kn, firefox-locale-gu, firefox-locale-ne, firefox-locale-hi, firefox-locale-ja, firefox-locale-af, firefox-locale-de, firefox-locale-id, firefox-locale-zu, firefox-locale-si, firefox-locale-mr, firefox-locale-it o USN-4978-1 : firefox-locale-km, firefox-locale-fa, firefox-locale-my, firefox-locale-th, firefox-locale-hu, firefox, firefox-locale-kk, firefox-locale-ku, firefox-locale-sv, firefox-locale-kab, firefox-locale-ru, firefox-locale-ast, firefox-locale-lv, firefox-locale-da, firefox-locale-is, firefox-locale-ko, firefox-locale-an, firefox-locale-nn, firefox-locale-tr, firefox-locale-or, firefox-locale-uk, firefox-locale-fr, firefox-geckodriver, firefox-locale-nb, firefox-locale-te, firefox-locale-br, firefox-dev, firefox-locale-gd, firefox-locale-oc, firefox-locale-et, firefox-locale-zh-hans, firefox-locale-ca, firefox-locale-mai, firefox-locale-sl, firefox-mozsymbols, firefox-locale-xh, firefox-locale-mk, firefox-locale-hr, firefox-locale-ta, firefox-locale-az, firefox-locale-bn, firefox-locale-es, firefox-locale-sk, firefox-locale-nl, firefox-locale-ur, firefox-locale-mn, firefox-locale-ga, firefox-locale-gn, firefox-locale-cak, firefox-locale-sq, firefox-locale-lg, firefox-locale-en, firefox-locale-gl, firefox-locale-hsb, firefox-locale-lt, firefox-locale-he, firefox-locale-bs, firefox-locale-as, firefox-locale-ar, firefox-locale-uz, firefox-locale-pt, firefox-locale-fi, firefox-locale-cy, firefox-locale-nso, firefox-locale-pa, firefox-locale-ml, firefox-locale-szl, firefox-locale-pl, firefox-locale-zh-hant, firefox-locale-be, firefox-locale-eo, firefox-locale-cs, firefox-locale-fy, firefox-locale-ro, firefox-locale-bg, firefox-locale-eu, firefox-locale-sr, firefox-locale-csb, firefox-locale-el, firefox-locale-ms, firefox-locale-ia, firefox-locale-ka, firefox-locale-hy, firefox-locale-sw, firefox-locale-vi, firefox-locale-kn, firefox-locale-gu, firefox-locale-ne, firefox-locale-hi, firefox-locale-ja, firefox-locale-af, firefox-locale-de, firefox-locale-id, firefox-locale-zu, firefox-locale-si, firefox-locale-mr, firefox-locale-it o USN-4893-1 : firefox-locale-km, firefox-locale-fa, firefox-locale-my, firefox-locale-th, firefox-locale-hu, firefox, firefox-locale-kk, firefox-locale-ku, firefox-locale-sv, firefox-locale-kab, firefox-locale-ru, firefox-locale-ast, firefox-locale-lv, firefox-locale-da, firefox-locale-is, firefox-locale-ko, firefox-locale-an, firefox-locale-nn, firefox-locale-tr, firefox-locale-or, firefox-locale-uk, firefox-locale-fr, firefox-geckodriver, firefox-locale-nb, firefox-locale-te, firefox-locale-br, firefox-dev, firefox-locale-gd, firefox-locale-oc, firefox-locale-et, firefox-locale-zh-hans, firefox-locale-ca, firefox-locale-mai, firefox-locale-sl, firefox-mozsymbols, firefox-locale-xh, firefox-locale-mk, firefox-locale-hr, firefox-locale-ta, firefox-locale-az, firefox-locale-bn, firefox-locale-es, firefox-locale-sk, firefox-locale-nl, firefox-locale-ur, firefox-locale-mn, firefox-locale-ga, firefox-locale-gn, firefox-locale-cak, firefox-locale-sq, firefox-locale-lg, firefox-locale-en, firefox-locale-gl, firefox-locale-hsb, firefox-locale-lt, firefox-locale-he, firefox-locale-bs, firefox-locale-as, firefox-locale-ar, firefox-locale-uz, firefox-locale-pt, firefox-locale-fi, firefox-locale-cy, firefox-locale-nso, firefox-locale-pa, firefox-locale-ml, firefox-locale-szl, firefox-locale-pl, firefox-locale-zh-hant, firefox-locale-be, firefox-locale-eo, firefox-locale-cs, firefox-locale-fy, firefox-locale-ro, firefox-locale-bg, firefox-locale-eu, firefox-locale-sr, firefox-locale-csb, firefox-locale-el, firefox-locale-ms, firefox-locale-ia, firefox-locale-ka, firefox-locale-hy, firefox-locale-sw, firefox-locale-vi, firefox-locale-kn, firefox-locale-gu, firefox-locale-ne, firefox-locale-hi, firefox-locale-ja, firefox-locale-af, firefox-locale-de, firefox-locale-id, firefox-locale-zu, firefox-locale-si, firefox-locale-mr, firefox-locale-it - --------------------------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 iQIVAwUBYNKUc+NLKJtyKPYoAQgsyhAAigxV6ItowZP2rhyQ+elOFW9P/HtCpB68 TOQzD07QBNHRs3Gc2RQKPnROCv4TiFw6a/Tz4o7udSeOqIRYauK0Cvx0JCj/Db1J eloxKdvSYOkW/vhaoE3NLImNpng3NYuDFMaJLX9yCH5UFyq6GhmPZr4bie8k9DCs iDG3bGAe1fWbIm4U7/bK57nyOmHgARAPpf2M1eeLF6fxdzFnkfskapdTXHNa3Vyi pq8b6WlR087XPHgOoEeEsxkDm58Kc5ZkfxupbL/2RrgTK7gRZPiDf+YWByuPm28k jLw9MHKOqrvN0HtmlSIJkDF72eTk+lUYrjFIihjfT5I0sreLjf2na9p5ebgQxsok sl0l1o/HRIKYA4/a5DfmiDH9wiPnWsMwgR6o0ikkRgcj24UOuDLCgEXn3K3DIZg8 DEPxGnMeuK4YW2KcqVQ49kmN/OQkj86mfBIsfIL5NsXdBmBn0LGajGDbUWvJ9E3l 8wwYr918+BHEijqvJN2thX+t0Mj4/WNhE9c6TUu9hTDPOjmI24wC6LQJp5Yxfrwf g7kVkVw1IAtEU6S+0ld5VbScycfi00HczPkXxH8xFQzibvMu+FYdW9dqJj78Yv6T EJO121Pdl87eEpBX/L04IBoCEFXKIG2zazro12uPvYQX4z2amJDCrrsNbQorxais NWydh5acHJo= =bjlb -----END PGP SIGNATURE-----