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CVE-2020-12387

Status Candidate

Overview

A race condition when running shutdown code for Web Worker led to a use-after-free vulnerability. This resulted in a potentially exploitable crash. This vulnerability affects Firefox ESR < 68.8, Firefox < 76, and Thunderbird < 68.8.0.

Related Files

Ubuntu Security Notice USN-4373-1
Posted May 26, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4373-1 - 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, or execute arbitrary code. It was discovered that Thunderbird did not correctly handle Unicode whitespace characters within the From email header. An attacker could potentially exploit this to spoof the sender email address that Thunderbird displays.

tags | advisory, denial of service, arbitrary, spoof
systems | linux, ubuntu
advisories | CVE-2020-12387, CVE-2020-12392, CVE-2020-12397, CVE-2020-6831
MD5 | 48d9b8ae7ffedbd250b8387a84151b42
Gentoo Linux Security Advisory 202005-04
Posted May 13, 2020
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 202005-4 - Multiple vulnerabilities have been found in Mozilla Firefox, the worst of which could result in the arbitrary execution of code. Versions less than 68.8.0 are affected.

tags | advisory, arbitrary, vulnerability
systems | linux, gentoo
advisories | CVE-2020-12387, CVE-2020-12392, CVE-2020-12394, CVE-2020-12395, CVE-2020-12396, CVE-2020-6831
MD5 | 5a37543d648da63d01d2fce5fba95770
Gentoo Linux Security Advisory 202005-03
Posted May 13, 2020
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 202005-3 - Multiple vulnerabilities have been found in Mozilla Thunderbird, the worst of which could result in the arbitrary execution of code. Versions less than 68.8.0 are affected.

tags | advisory, arbitrary, vulnerability
systems | linux, gentoo
advisories | CVE-2020-12387, CVE-2020-12392, CVE-2020-12395, CVE-2020-12397, CVE-2020-6831
MD5 | 5d954d709887a690157e265bb70735e3
Red Hat Security Advisory 2020-2050-01
Posted May 11, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-2050-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 68.8.0. Issues addressed include buffer overflow, spoofing, and use-after-free vulnerabilities.

tags | advisory, overflow, spoof, vulnerability
systems | linux, redhat
advisories | CVE-2020-12387, CVE-2020-12392, CVE-2020-12395, CVE-2020-12397, CVE-2020-6831
MD5 | f0f509c8a98f1e75861b31968984da9f
Red Hat Security Advisory 2020-2049-01
Posted May 11, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-2049-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 68.8.0. Issues addressed include buffer overflow, spoofing, and use-after-free vulnerabilities.

tags | advisory, overflow, spoof, vulnerability
systems | linux, redhat
advisories | CVE-2020-12387, CVE-2020-12392, CVE-2020-12395, CVE-2020-12397, CVE-2020-6831
MD5 | ae525081640b49f2af16d43b6181f1d0
Red Hat Security Advisory 2020-2046-01
Posted May 11, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-2046-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 68.8.0. Issues addressed include buffer overflow, spoofing, and use-after-free vulnerabilities.

tags | advisory, overflow, spoof, vulnerability
systems | linux, redhat
advisories | CVE-2020-12387, CVE-2020-12392, CVE-2020-12395, CVE-2020-12397, CVE-2020-6831
MD5 | 3e4800352ed0aad7ce80437030bbc415
Red Hat Security Advisory 2020-2047-01
Posted May 11, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-2047-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 68.8.0. Issues addressed include buffer overflow, spoofing, and use-after-free vulnerabilities.

tags | advisory, overflow, spoof, vulnerability
systems | linux, redhat
advisories | CVE-2020-12387, CVE-2020-12392, CVE-2020-12395, CVE-2020-12397, CVE-2020-6831
MD5 | 76812eb9d4e5beb44737115e4c7aef70
Red Hat Security Advisory 2020-2048-01
Posted May 11, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-2048-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 68.8.0. Issues addressed include buffer overflow, spoofing, and use-after-free vulnerabilities.

tags | advisory, overflow, spoof, vulnerability
systems | linux, redhat
advisories | CVE-2020-12387, CVE-2020-12392, CVE-2020-12395, CVE-2020-12397, CVE-2020-6831
MD5 | 8e7056da973aa24d67c47a3ae5e0653a
Red Hat Security Advisory 2020-2036-01
Posted May 6, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-2036-01 - Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This update upgrades Firefox to version 68.8.0 ESR. Issues addressed include buffer overflow and use-after-free vulnerabilities.

tags | advisory, web, overflow, vulnerability
systems | linux, redhat
advisories | CVE-2020-12387, CVE-2020-12392, CVE-2020-12395, CVE-2020-6831
MD5 | 0971f4bca4c7daa230881114edcce45c
Red Hat Security Advisory 2020-2037-01
Posted May 6, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-2037-01 - Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This update upgrades Firefox to version 68.8.0 ESR. Issues addressed include buffer overflow and use-after-free vulnerabilities.

tags | advisory, web, overflow, vulnerability
systems | linux, redhat
advisories | CVE-2020-12387, CVE-2020-12392, CVE-2020-12395, CVE-2020-6831
MD5 | 5de2ea83e1cbda3181f2424820d97cb9
Red Hat Security Advisory 2020-2031-01
Posted May 6, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-2031-01 - Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This update upgrades Firefox to version 68.8.0 ESR. Issues addressed include buffer overflow and use-after-free vulnerabilities.

tags | advisory, web, overflow, vulnerability
systems | linux, redhat
advisories | CVE-2020-12387, CVE-2020-12392, CVE-2020-12395, CVE-2020-6831
MD5 | bc650517bed7cd4181a689876c0b57d7
Red Hat Security Advisory 2020-2032-01
Posted May 6, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-2032-01 - Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This update upgrades Firefox to version 68.8.0 ESR. Issues addressed include buffer overflow and use-after-free vulnerabilities.

tags | advisory, web, overflow, vulnerability
systems | linux, redhat
advisories | CVE-2020-12387, CVE-2020-12392, CVE-2020-12395, CVE-2020-6831
MD5 | 5927736c05927d131317cb3bd7e1fe48
Red Hat Security Advisory 2020-2033-01
Posted May 6, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-2033-01 - Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This update upgrades Firefox to version 68.8.0 ESR. Issues addressed include buffer overflow and use-after-free vulnerabilities.

tags | advisory, web, overflow, vulnerability
systems | linux, redhat
advisories | CVE-2020-12387, CVE-2020-12392, CVE-2020-12395, CVE-2020-6831
MD5 | 3f34a9e30c47445fb42985fd9a05b67f
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