This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --===============8484644817226161030== Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="0hC6pZuPo55HyNZkzzGFgR4eJKEo7S8jx"
This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --0hC6pZuPo55HyNZkzzGFgR4eJKEo7S8jx Content-Type: multipart/mixed; boundary="K3DB87rcHsD2n50jsYhRRgmJxedj0kqfw"; protected-headers="v1" From: Chris Coulson <chris.coulson@canonical.com> Reply-To: Ubuntu Security <security@ubuntu.com> To: ubuntu-security-announce@lists.ubuntu.com Message-ID: <a59b8fb7-bc47-20b1-fbc0-2c88327cb24b@canonical.com> Subject: [USN-3918-4] Firefox regressions
--K3DB87rcHsD2n50jsYhRRgmJxedj0kqfw Content-Type: text/plain; charset=utf- Content-Transfer-Encoding: quoted-printable Content-Language: en-US
========================================================================== Ubuntu Security Notice USN-3918-4 April 16, 2019
firefox regressions ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 18.10 - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS - Ubuntu 14.04 LTS
Summary:
USN-3918-1 caused a regression in Firefox.
Software Description: - firefox: Mozilla Open Source web browser
Details:
USN-3918-1 fixed vulnerabilities in Firefox. The update caused web compatibility and performance issues with some websites. This update fixes the problem.
We apologize for the inconvenience.
Original advisory details:
Multiple security issues were discovered in Firefox. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service via application crash, denial of service via successive FTP authorization prompts or modal alerts, trick the user with confusing permission request prompts, obtain sensitive information, conduct social engineering attacks, or execute arbitrary code. (CVE-2019-9788, CVE-2019-9789, CVE-2019-9790, CVE-2019-9791, CVE-2019-9792, CVE-2019-9795, CVE-2019-9796, CVE-2019-9797, CVE-2019-9799, CVE-2019-9802, CVE-2019-9805, CVE-2019-9806, CVE-2019-9807, CVE-2019-9808, CVE-2019-9809) A mechanism was discovered that removes some bounds checking for string, array, or typed array accesses if Spectre mitigations have been disabled. If a user were tricked in to opening a specially crafted website with Spectre mitigations disabled, an attacker could potentially exploit this to cause a denial of service, or execute arbitrary code. (CVE-2019-9793) It was discovered that Upgrade-Insecure-Requests was incorrectly enforced for same-origin navigation. An attacker could potentially exploit this to conduct man-in-the-middle (MITM) attacks. (CVE-2019-9803)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 18.10: firefox 66.0.3+build1-0ubuntu0.18.10.1
Ubuntu 18.04 LTS: firefox 66.0.3+build1-0ubuntu0.18.04.1
Ubuntu 16.04 LTS: firefox 66.0.3+build1-0ubuntu0.16.04.1
Ubuntu 14.04 LTS: firefox 66.0.3+build1-0ubuntu0.14.04.1
After a standard system update you need to restart Firefox to make all the necessary changes.
References: https://usn.ubuntu.com/usn/usn-3918-4 https://usn.ubuntu.com/usn/usn-3918-1 https://launchpad.net/bugs/1825051
Package Information: https://launchpad.net/ubuntu/+source/firefox/66.0.3+build1-0ubuntu0.18.10.1 https://launchpad.net/ubuntu/+source/firefox/66.0.3+build1-0ubuntu0.18.04.1 https://launchpad.net/ubuntu/+source/firefox/66.0.3+build1-0ubuntu0.16.04.1 https://launchpad.net/ubuntu/+source/firefox/66.0.3+build1-0ubuntu0.14.04.1
--K3DB87rcHsD2n50jsYhRRgmJxedj0kqfw--
--0hC6pZuPo55HyNZkzzGFgR4eJKEo7S8jx Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc"
-----BEGIN PGP SIGNATURE-----
iQEzBAEBCgAdFiEERN//5MGgCOgyKeIFYR+97NWUbg8FAly2XD4ACgkQYR+97NWU bg9L9Af8DlVkNZSPaeT3WH1hDFykm1wCxxeoqT13bt0iJZaFQRUzPUGTn5TNErs6 tnSdCTWLO8FPo/9+kcQB6DF3CoLxXTgsWDEBWfBMlz4TGQ8dO4GWp17rf94lMFlX LdLsPSYv4vefKQyU67+JSw7yGnk/yiNyU9aBO4u7opp9A4T2HGEEvebARHcGn2TV sSZzFiBDDN7kOF91bZzFVqWU+2dOw83fo9wvJ19XTNsA9VB3V3R6Uai329fKd259 C1rtZrYgrfPJyHPNBjT3n7N0YEMuVCLvGdif9QE/UeH4hfedRgwbA/hkMcxdSaoi ddNvo3Q7DcrUNmmDbeuJI7P3CtshBQ== =nRpL -----END PGP SIGNATURE-----
--0hC6pZuPo55HyNZkzzGFgR4eJKEo7S8jx--
--===============8484644817226161030== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline
LS0gCnVidW50dS1zZWN1cml0eS1hbm5vdW5jZSBtYWlsaW5nIGxpc3QKdWJ1bnR1LXNlY3VyaXR5 LWFubm91bmNlQGxpc3RzLnVidW50dS5jb20KTW9kaWZ5IHNldHRpbmdzIG9yIHVuc3Vic2NyaWJl IGF0OiBodHRwczovL2xpc3RzLnVidW50dS5jb20vbWFpbG1hbi9saXN0aW5mby91YnVudHUtc2Vj dXJpdHktYW5ub3VuY2UK
--===============8484644817226161030==--
|