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CVE-2021-43538

Status Candidate

Overview

By misusing a race in our notification code, an attacker could have forcefully hidden the notification for pages that had received full screen and pointer lock access, which could have been used for spoofing attacks. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.

Related Files

Debian Security Advisory 5026-1
Posted Dec 28, 2021
Authored by Debian | Site debian.org

Debian Linux Security Advisory 5026-1 - Multiple security issues have been found in the Mozilla Firefox web browser, which could potentially result in the execution of arbitrary code, information disclosure or spoofing.

tags | advisory, web, arbitrary, spoof, info disclosure
systems | linux, debian
advisories | CVE-2021-38503, CVE-2021-38504, CVE-2021-38506, CVE-2021-38507, CVE-2021-38508, CVE-2021-38509, CVE-2021-43534, CVE-2021-43535, CVE-2021-43536, CVE-2021-43537, CVE-2021-43538, CVE-2021-43539, CVE-2021-43541, CVE-2021-43542
SHA-256 | 5dd3e34f7a37e68f3bcb4b4e4a624d36721ad43edbf9d5779c29309bb60ce56e
Red Hat Security Advisory 2012-5055-03
Posted Dec 10, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2012-5055-03 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 91.4.0. Issues addressed include buffer overflow, bypass, denial of service, and spoofing vulnerabilities.

tags | advisory, denial of service, overflow, spoof, vulnerability
systems | linux, redhat
advisories | CVE-2021-43528, CVE-2021-43536, CVE-2021-43537, CVE-2021-43538, CVE-2021-43539, CVE-2021-43541, CVE-2021-43542, CVE-2021-43543, CVE-2021-43545, CVE-2021-43546
SHA-256 | 61b4bec841e680bb9a5571f36321dbeaf52b939212f9b957e57c9c5429cb53aa
Red Hat Security Advisory 2021-5047-02
Posted Dec 9, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-5047-02 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 91.4.0. Issues addressed include buffer overflow, bypass, denial of service, and spoofing vulnerabilities.

tags | advisory, denial of service, overflow, spoof, vulnerability
systems | linux, redhat
advisories | CVE-2021-43528, CVE-2021-43536, CVE-2021-43537, CVE-2021-43538, CVE-2021-43539, CVE-2021-43541, CVE-2021-43542, CVE-2021-43543, CVE-2021-43545, CVE-2021-43546
SHA-256 | 84513c296e1cb665f608c46256ab2a785c7a5175879460d7d82c607fa6b170fe
Red Hat Security Advisory 2021-5045-02
Posted Dec 9, 2021
Site access.redhat.com

Red Hat Security Advisory 2021-5045-02 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 91.4.0. Issues addressed include buffer overflow, bypass, denial of service, and spoofing vulnerabilities.

advisories | CVE-2021-43528, CVE-2021-43536, CVE-2021-43537, CVE-2021-43538, CVE-2021-43539, CVE-2021-43541, CVE-2021-43542, CVE-2021-43543, CVE-2021-43545, CVE-2021-43546
SHA-256 | 999201abc31c40fe215c9fd3147adcfdee8840b27a3cbba9ac01e6553978ad41
Red Hat Security Advisory 2021-5045-02
Posted Dec 9, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-5045-02 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 91.4.0. Issues addressed include buffer overflow, bypass, denial of service, and spoofing vulnerabilities.

tags | advisory, denial of service, overflow, spoof, vulnerability
systems | linux, redhat
advisories | CVE-2021-43528, CVE-2021-43536, CVE-2021-43537, CVE-2021-43538, CVE-2021-43539, CVE-2021-43541, CVE-2021-43542, CVE-2021-43543, CVE-2021-43545, CVE-2021-43546
SHA-256 | 999201abc31c40fe215c9fd3147adcfdee8840b27a3cbba9ac01e6553978ad41
Red Hat Security Advisory 2021-5048-02
Posted Dec 9, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-5048-02 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 91.4.0. Issues addressed include buffer overflow, bypass, denial of service, and spoofing vulnerabilities.

tags | advisory, denial of service, overflow, spoof, vulnerability
systems | linux, redhat
advisories | CVE-2021-43528, CVE-2021-43536, CVE-2021-43537, CVE-2021-43538, CVE-2021-43539, CVE-2021-43541, CVE-2021-43542, CVE-2021-43543, CVE-2021-43545, CVE-2021-43546
SHA-256 | 52ee01bf4f97804e4815795bc2c04f34e9d1688b14476900aff6d01a8d3e1d87
Red Hat Security Advisory 2021-5046-03
Posted Dec 9, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-5046-03 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 91.4.0. Issues addressed include buffer overflow, bypass, denial of service, and spoofing vulnerabilities.

tags | advisory, denial of service, overflow, spoof, vulnerability
systems | linux, redhat
advisories | CVE-2021-43528, CVE-2021-43536, CVE-2021-43537, CVE-2021-43538, CVE-2021-43539, CVE-2021-43541, CVE-2021-43542, CVE-2021-43543, CVE-2021-43545, CVE-2021-43546
SHA-256 | ee077d75c706a7539579ac412e98e5621f6c04a089dd2ee6f67bcb62dc92c562
Red Hat Security Advisory 2021-5014-03
Posted Dec 8, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-5014-03 - Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This update upgrades Firefox to version 91.4.0 ESR. Issues addressed include buffer overflow, bypass, denial of service, and spoofing vulnerabilities.

tags | advisory, web, denial of service, overflow, spoof, vulnerability
systems | linux, redhat
advisories | CVE-2021-43536, CVE-2021-43537, CVE-2021-43538, CVE-2021-43539, CVE-2021-43541, CVE-2021-43542, CVE-2021-43543, CVE-2021-43545, CVE-2021-43546
SHA-256 | 3ad3d6fd9a22c00f038c29177aaf8973eacea6c838d7d00dfc4cc7e048d4a63d
Red Hat Security Advisory 2021-5017-03
Posted Dec 8, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-5017-03 - Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This update upgrades Firefox to version 91.4.0 ESR. Issues addressed include buffer overflow, bypass, denial of service, and spoofing vulnerabilities.

tags | advisory, web, denial of service, overflow, spoof, vulnerability
systems | linux, redhat
advisories | CVE-2021-43536, CVE-2021-43537, CVE-2021-43538, CVE-2021-43539, CVE-2021-43541, CVE-2021-43542, CVE-2021-43543, CVE-2021-43545, CVE-2021-43546
SHA-256 | c0dc1d21afc67be61db33c6d32fb7097af1bab16682e5b1f9056b5b9214460ce
Red Hat Security Advisory 2021-5016-03
Posted Dec 8, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-5016-03 - Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This update upgrades Firefox to version 91.4.0 ESR. Issues addressed include buffer overflow, bypass, denial of service, and spoofing vulnerabilities.

tags | advisory, web, denial of service, overflow, spoof, vulnerability
systems | linux, redhat
advisories | CVE-2021-43536, CVE-2021-43537, CVE-2021-43538, CVE-2021-43539, CVE-2021-43541, CVE-2021-43542, CVE-2021-43543, CVE-2021-43545, CVE-2021-43546
SHA-256 | d270e2edb8cf44801a3f262428601f6743fd5ebf1de5221bfaca2d4922230ac2
Red Hat Security Advisory 2021-5015-03
Posted Dec 8, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-5015-03 - Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This update upgrades Firefox to version 91.4.0 ESR. Issues addressed include buffer overflow, bypass, denial of service, and spoofing vulnerabilities.

tags | advisory, web, denial of service, overflow, spoof, vulnerability
systems | linux, redhat
advisories | CVE-2021-43536, CVE-2021-43537, CVE-2021-43538, CVE-2021-43539, CVE-2021-43541, CVE-2021-43542, CVE-2021-43543, CVE-2021-43545, CVE-2021-43546
SHA-256 | e41e1e1e328dc2d3c026fc64de1fe70718e8d6c17628738e37e19c4532600a89
Red Hat Security Advisory 2021-5013-03
Posted Dec 8, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-5013-03 - Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This update upgrades Firefox to version 91.4.0 ESR. Issues addressed include buffer overflow, bypass, denial of service, and spoofing vulnerabilities.

tags | advisory, web, denial of service, overflow, spoof, vulnerability
systems | linux, redhat
advisories | CVE-2021-43536, CVE-2021-43537, CVE-2021-43538, CVE-2021-43539, CVE-2021-43541, CVE-2021-43542, CVE-2021-43543, CVE-2021-43545, CVE-2021-43546
SHA-256 | 51359e4164ec2d20bffc21b3cd50b530e8fef1f157daba7910999bb57b8c1773
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