CVE-2021-23994

Mozilla: Out of bound write due to lazy initialization

A WebGL framebuffer was not initialized early enough, resulting in memory corruption and an out of bound write. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.

CVSS 3.1 · 8.8 High EPSS 1.8% KEV · Not listed

Vendors

Mozilla Redhat

Products

Firefox Firefox Esr Thunderbird and 2 more

CVE-2021-23993

Mozilla: Inability to send encrypted OpenPGP email after importing a crafted OpenPGP key

An attacker may perform a DoS attack to prevent a user from sending encrypted email to a correspondent. If an attacker creates a crafted OpenPGP key with a subkey that has an invalid self signature, and the Thunderbird user imports the crafted key, then Thunderbird may try to use the invalid subkey, but the RNP library rejects it from being used, causing encryption to fail. This vulnerability affects Thunderbird < 78.9.1.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

Vendors

Mozilla Redhat

Products

Thunderbird Enterprise Linux Rhel Eus

CVE-2021-23992

Mozilla: A crafted OpenPGP key with an invalid user ID could be used to confuse the user

Thunderbird did not check if the user ID associated with an OpenPGP key has a valid self signature. An attacker may create a crafted version of an OpenPGP key, by either replacing the original user ID, or by adding another user ID. If Thunderbird imports and accepts the crafted key, the Thunderbird user may falsely conclude that the false user ID belongs to the correspondent. This vulnerability affects Thunderbird < 78.9.1.

CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed

Vendors

Mozilla Redhat

Products

Thunderbird Enterprise Linux Rhel Eus

CVE-2021-23991

Mozilla: An attacker may use Thunderbird's OpenPGP key refresh mechanism to poison an existing key

If a Thunderbird user has previously imported Alice's OpenPGP key, and Alice has extended the validity period of her key, but Alice's updated key has not yet been imported, an attacker may send an email containing a crafted version of Alice's key with an invalid subkey, Thunderbird might subsequently attempt to use the invalid subkey, and will fail to send encrypted email to Alice. This vulnerability affects Thunderbird < 78.9.1.

CVSS 3.1 · 6.8 Medium EPSS 1.0% KEV · Not listed

Vendors

Mozilla Redhat

Products

Thunderbird Enterprise Linux Rhel Eus

CVE-2021-23987

Mozilla: Memory safety bugs fixed in Firefox 87 and Firefox ESR 78.9

Mozilla developers and community members reported memory safety bugs present in Firefox 86 and Firefox ESR 78.8. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 78.9, Firefox < 87, and Thunderbird < 78.9.

CVSS 3.1 · 8.8 High EPSS 1.4% KEV · Not listed

Vendors

Mozilla Redhat

Products

Firefox Firefox Esr Thunderbird and 2 more

CVE-2021-23984

Mozilla: Malicious extensions could have spoofed popup information

A malicious extension could have opened a popup window lacking an address bar. The title of the popup lacking an address bar should not be fully controllable, but in this situation was. This could have been used to spoof a website and attempt to trick the user into providing credentials. This vulnerability affects Firefox ESR < 78.9, Firefox < 87, and Thunderbird < 78.9.

CVSS 3.1 · 6.5 Medium EPSS 1.1% KEV · Not listed

Vendors

Mozilla Redhat

Products

Firefox Firefox Esr Thunderbird and 2 more

CVE-2021-23982

Mozilla: Internal network hosts could have been probed by a malicious webpage

Using techniques that built on the slipstream research, a malicious webpage could have scanned both an internal network's hosts as well as services running on the user's local machine utilizing WebRTC connections. This vulnerability affects Firefox ESR < 78.9, Firefox < 87, and Thunderbird < 78.9.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

Vendors

Mozilla Redhat

Products

Firefox Firefox Esr Thunderbird and 2 more

CVE-2021-23981

Mozilla: Texture upload into an unbound backing buffer resulted in an out-of-bound read

A texture upload of a Pixel Buffer Object could have confused the WebGL code to skip binding the buffer used to unpack it, resulting in memory corruption and a potentially exploitable information leak or crash. This vulnerability affects Firefox ESR < 78.9, Firefox < 87, and Thunderbird < 78.9.

CVSS 3.1 · 8.1 High EPSS 1.1% KEV · Not listed

Vendors

Mozilla Redhat

Products

Firefox Firefox Esr Thunderbird and 2 more

CVE-2021-23978

Mozilla: Memory safety bugs fixed in Firefox 86 and Firefox ESR 78.8

Mozilla developers reported memory safety bugs present in Firefox 85 and Firefox ESR 78.7. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 86, Thunderbird < 78.8, and Firefox ESR < 78.8.

CVSS 3.1 · 8.8 High EPSS 1.5% KEV · Not listed

Vendors

Debian Mozilla Redhat

Products

Debian Linux Firefox Firefox Esr and 3 more

CVE-2021-23973

Mozilla: MediaError message property could have leaked information about cross-origin resources

When trying to load a cross-origin resource in an audio/video context a decoding error may have resulted, and the content of that error may have revealed information about the resource. This vulnerability affects Firefox < 86, Thunderbird < 78.8, and Firefox ESR < 78.8.

CVSS 3.1 · 6.5 Medium EPSS 1.4% KEV · Not listed

Vendors

Debian Mozilla Redhat

Products

Debian Linux Firefox Firefox Esr and 3 more

CVE-2021-23969

Mozilla: Content Security Policy violation report could have contained the destination of a redirect

As specified in the W3C Content Security Policy draft, when creating a violation report, "User agents need to ensure that the source file is the URL requested by the page, pre-redirects. If that’s not possible, user agents need to strip the URL down to an origin to avoid unintentional leakage." Under certain types of redirects, Firefox incorrectly set the source file to be the destination of the redirects. This was fixed to be the redirect destination's origin. This vulnerability affects Firefox < 86, Thunderbird < 78.8, and Firefox ESR < 78.8.

CVSS 3.1 · 4.3 Medium EPSS 1.2% KEV · Not listed

Vendors

Debian Mozilla Redhat

Products

Debian Linux Firefox Firefox Esr and 3 more

CVE-2021-23968

Mozilla: Content Security Policy violation report could have contained the destination of a redirect

If Content Security Policy blocked frame navigation, the full destination of a redirect served in the frame was reported in the violation report; as opposed to the original frame URI. This could be used to leak sensitive information contained in such URIs. This vulnerability affects Firefox < 86, Thunderbird < 78.8, and Firefox ESR < 78.8.

CVSS 3.1 · 4.3 Medium EPSS 1.3% KEV · Not listed

Vendors

Debian Mozilla Redhat

Products

Debian Linux Firefox Firefox Esr and 3 more

CVE-2021-23964

Mozilla: Memory safety bugs fixed in Firefox 85 and Firefox ESR 78.7

Mozilla developers reported memory safety bugs present in Firefox 84 and Firefox ESR 78.6. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 85, Thunderbird < 78.7, and Firefox ESR < 78.7.

CVSS 3.1 · 8.8 High EPSS 1.4% KEV · Not listed

Vendors

Mozilla Redhat

Products

Firefox Firefox Esr Thunderbird and 2 more

CVE-2021-23961

Mozilla: More internal network hosts could have been probed by a malicious webpage

Further techniques that built on the slipstream research combined with a malicious webpage could have exposed both an internal network's hosts as well as services running on the user's local machine. This vulnerability affects Firefox < 85.

CVSS 3.1 · 7.4 High EPSS 1.5% KEV · Not listed

Vendors

Debian Mozilla Redhat

Products

Debian Linux Firefox Enterprise Linux and 1 more

CVE-2021-23960

Mozilla: Use-after-poison for incorrectly redeclared JavaScript variables during GC

Performing garbage collection on re-declared JavaScript variables resulted in a user-after-poison, and a potentially exploitable crash. This vulnerability affects Firefox < 85, Thunderbird < 78.7, and Firefox ESR < 78.7.

CVSS 3.1 · 8.8 High EPSS 1.3% KEV · Not listed

Vendors

Mozilla Redhat

Products

Firefox Firefox Esr Thunderbird and 2 more

CVE-2021-23954

Mozilla: Type confusion when using logical assignment operators in JavaScript switch statements

Using the new logical assignment operators in a JavaScript switch statement could have caused a type confusion, leading to a memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 85, Thunderbird < 78.7, and Firefox ESR < 78.7.

CVSS 3.1 · 8.8 High EPSS 1.2% KEV · Not listed

Vendors

Mozilla Redhat

Products

Firefox Firefox Esr Thunderbird and 2 more

CVE-2021-23953

Mozilla: Cross-origin information leakage via redirected PDF requests

If a user clicked into a specifically crafted PDF, the PDF reader could be confused into leaking cross-origin information, when said information is served as chunked data. This vulnerability affects Firefox < 85, Thunderbird < 78.7, and Firefox ESR < 78.7.

CVSS 3.1 · 4.3 Medium EPSS 1.1% KEV · Not listed

Vendors

Mozilla Redhat

Products

Firefox Firefox Esr Thunderbird and 2 more

CVE-2021-23362

Regular Expression Denial of Service (ReDoS)

The package hosted-git-info before 3.0.8 are vulnerable to Regular Expression Denial of Service (ReDoS) via regular expression shortcutMatch in the fromUrl function in index.js. The affected regular expression exhibits polynomial worst-case time complexity.

CVSS 3.1 · 5.3 Medium EPSS 3.6% KEV · Not listed

Vendors

Npmjs Redhat Siemens

Products

Hosted-git-info Acm Enterprise Linux and 4 more

CVE-2021-23343

Regular Expression Denial of Service (ReDoS)

All versions of package path-parse are vulnerable to Regular Expression Denial of Service (ReDoS) via splitDeviceRe, splitTailRe, and splitPathRe regular expressions. ReDoS exhibits polynomial worst-case time complexity.

CVSS 3.1 · 5.3 Medium EPSS 2.2% KEV · Not listed

Vendors

Path-parse Project Redhat

Products

Path-parse Acm Advanced Cluster Security and 4 more

CVE-2021-23192

samba: Subsequent DCE/RPC fragment injection vulnerability

A flaw was found in the way samba implemented DCE/RPC. If a client to a Samba server sent a very large DCE/RPC request, and chose to fragment it, an attacker could replace later fragments with their own data, bypassing the signature requirements.

CVSS 3.1 · 7.5 High EPSS 2.0% KEV · Not listed

Vendors

Redhat Samba

Products

Enterprise Linux Rhel Eus Storage and 1 more