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CVE-2017-7764

Status Candidate

Overview

Characters from the "Canadian Syllabics" unicode block can be mixed with characters from other unicode blocks in the addressbar instead of being rendered as their raw "punycode" form, allowing for domain name spoofing attacks through character confusion. The current Unicode standard allows characters from "Aspirational Use Scripts" such as Canadian Syllabics to be mixed with Latin characters in the "moderately restrictive" IDN profile. We have changed Firefox behavior to match the upcoming Unicode version 10.0 which removes this category and treats them as "Limited Use Scripts.". This vulnerability affects Firefox < 54, Firefox ESR < 52.2, and Thunderbird < 52.2.

Related Files

Ubuntu Security Notice USN-3321-1
Posted Jul 6, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3321-1 - Multiple security issues were discovered in Thunderbird. If a user were tricked in to opening a specially crafted website in a browsing context, an attacker could potentially exploit these to cause a denial of service, read uninitialized memory, obtain sensitive information or execute arbitrary code. Multiple security issues were discovered in the Graphite 2 library used by Thunderbird. If a user were tricked in to opening a specially crafted message, an attacker could potentially exploit these to cause a denial of service, read uninitialized memory, or execute arbitrary code. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2017-5470, CVE-2017-5472, CVE-2017-7749, CVE-2017-7750, CVE-2017-7751, CVE-2017-7752, CVE-2017-7754, CVE-2017-7756, CVE-2017-7757, CVE-2017-7758, CVE-2017-7764, CVE-2017-7771, CVE-2017-7772, CVE-2017-7773, CVE-2017-7774, CVE-2017-7775, CVE-2017-7776, CVE-2017-7777, CVE-2017-7778
SHA-256 | 57e348bea760c2cb4327bbd86d89e9a4d71e13691e4cb0cb59f1f2020a33eef1
Red Hat Security Advisory 2017-1561-01
Posted Jun 21, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-1561-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 52.2.0. Security Fix: Multiple flaws were found in the processing of malformed web content. A web page containing malicious content could cause Thunderbird to crash or, potentially, execute arbitrary code with the privileges of the user running Thunderbird.

tags | advisory, web, arbitrary
systems | linux, redhat
advisories | CVE-2017-5470, CVE-2017-5472, CVE-2017-7749, CVE-2017-7750, CVE-2017-7751, CVE-2017-7752, CVE-2017-7754, CVE-2017-7756, CVE-2017-7757, CVE-2017-7758, CVE-2017-7764, CVE-2017-7771, CVE-2017-7772, CVE-2017-7773, CVE-2017-7774, CVE-2017-7775, CVE-2017-7776, CVE-2017-7777, CVE-2017-7778
SHA-256 | 502ad26d007c53fa4eb41c7d2c2e6e3149dbaeb0df72f833d10b786f83e62751
Debian Security Advisory 3881-1
Posted Jun 15, 2017
Authored by Debian | Site debian.org

Debian Linux Security Advisory 3881-1 - Several security issues have been found in the Mozilla Firefox web and other implementation errors may lead to the execution of arbitrary code, denial of service or domain spoofing.

tags | advisory, web, denial of service, arbitrary, spoof
systems | linux, debian
advisories | CVE-2017-5470, CVE-2017-5472, CVE-2017-7749, CVE-2017-7750, CVE-2017-7751, CVE-2017-7752, CVE-2017-7754, CVE-2017-7756, CVE-2017-7757, CVE-2017-7758, CVE-2017-7764, CVE-2017-7771, CVE-2017-7772, CVE-2017-7773, CVE-2017-7774, CVE-2017-7775, CVE-2017-7776, CVE-2017-7777, CVE-2017-7778
SHA-256 | 112422a70957456e9a0f819bd20d78994f90e7c026cb6c4655c32d62302d5b07
Ubuntu Security Notice USN-3315-1
Posted Jun 15, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3315-1 - 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, read uninitialized memory, obtain sensitive information, spoof the addressbar contents, or execute arbitrary code. Multiple security issues were discovered in the Graphite 2 library used by 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, read uninitialized memory, or execute arbitrary code. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, spoof
systems | linux, ubuntu
advisories | CVE-2017-5470, CVE-2017-5471, CVE-2017-5472, CVE-2017-7749, CVE-2017-7750, CVE-2017-7751, CVE-2017-7752, CVE-2017-7754, CVE-2017-7756, CVE-2017-7757, CVE-2017-7758, CVE-2017-7762, CVE-2017-7764, CVE-2017-7771, CVE-2017-7772, CVE-2017-7773, CVE-2017-7774, CVE-2017-7775, CVE-2017-7776, CVE-2017-7777, CVE-2017-7778
SHA-256 | 7eb0864d83a8a74066d8c82ffa503c1e09d4fbdfca74fda567aa1c836240f8c7
Red Hat Security Advisory 2017-1440-01
Posted Jun 14, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-1440-01 - Mozilla Firefox is an open source web browser. This update upgrades Firefox to version 52.2.0 ESR. Security Fix: Multiple flaws were found in the processing of malformed web content. A web page containing malicious content could cause Firefox to crash or, potentially, execute arbitrary code with the privileges of the user running Firefox.

tags | advisory, web, arbitrary
systems | linux, redhat
advisories | CVE-2017-5470, CVE-2017-5472, CVE-2017-7749, CVE-2017-7750, CVE-2017-7751, CVE-2017-7752, CVE-2017-7754, CVE-2017-7756, CVE-2017-7757, CVE-2017-7758, CVE-2017-7764, CVE-2017-7771, CVE-2017-7772, CVE-2017-7773, CVE-2017-7774, CVE-2017-7775, CVE-2017-7776, CVE-2017-7777, CVE-2017-7778
SHA-256 | 26d6c36e4053e261e142a2e263030deba754785c2baa9807438506be570d59c6
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