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Vuln ID | Summary | CVSS Severity |
---|---|---|
CVE-2021-38507 |
The Opportunistic Encryption feature of HTTP2 (RFC 8164) allows a connection to be transparently upgraded to TLS while retaining the visual properties of an HTTP connection, including being same-origin with unencrypted connections on port 80. However, if a second encrypted port on the same IP address (e.g. port 8443) did not opt-in to opportunistic encryption; a network attacker could forward a connection from the browser to port 443 to port 8443, causing the browser to treat the content of port 8443 as same-origin with HTTP. This was resolved by disabling the Opportunistic Encryption feature, which had low usage. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3. Published: December 08, 2021; 5:15:08 PM -0500 |
V4.0:(not available) V3.1: 6.5 MEDIUM V2.0: 4.3 MEDIUM |
CVE-2021-38506 |
Through a series of navigations, Firefox could have entered fullscreen mode without notification or warning to the user. This could lead to spoofing attacks on the browser UI including phishing. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3. Published: December 08, 2021; 5:15:08 PM -0500 |
V4.0:(not available) V3.1: 4.3 MEDIUM V2.0: 4.3 MEDIUM |
CVE-2021-38505 |
Microsoft introduced a new feature in Windows 10 known as Cloud Clipboard which, if enabled, will record data copied to the clipboard to the cloud, and make it available on other computers in certain scenarios. Applications that wish to prevent copied data from being recorded in Cloud History must use specific clipboard formats; and Firefox before versions 94 and ESR 91.3 did not implement them. This could have caused sensitive data to be recorded to a user's Microsoft account. *This bug only affects Firefox for Windows 10+ with Cloud Clipboard enabled. Other operating systems are unaffected.*. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3. Published: December 08, 2021; 5:15:08 PM -0500 |
V4.0:(not available) V3.1: 6.5 MEDIUM V2.0: 4.3 MEDIUM |
CVE-2021-38504 |
When interacting with an HTML input element's file picker dialog with webkitdirectory set, a use-after-free could have resulted, leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3. Published: December 08, 2021; 5:15:08 PM -0500 |
V4.0:(not available) V3.1: 8.8 HIGH V2.0: 6.8 MEDIUM |
CVE-2021-38503 |
The iframe sandbox rules were not correctly applied to XSLT stylesheets, allowing an iframe to bypass restrictions such as executing scripts or navigating the top-level frame. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3. Published: December 08, 2021; 5:15:08 PM -0500 |
V4.0:(not available) V3.1: 10.0 CRITICAL V2.0: 7.5 HIGH |
CVE-2021-38502 |
Thunderbird ignored the configuration to require STARTTLS security for an SMTP connection. A MITM could perform a downgrade attack to intercept transmitted messages, or could take control of the authenticated session to execute SMTP commands chosen by the MITM. If an unprotected authentication method was configured, the MITM could obtain the authentication credentials, too. This vulnerability affects Thunderbird < 91.2. Published: November 02, 2021; 9:15:07 PM -0400 |
V4.0:(not available) V3.1: 5.9 MEDIUM V2.0: 4.3 MEDIUM |
CVE-2021-38501 |
Mozilla developers reported memory safety bugs present in Firefox 92 and Firefox ESR 91.1. 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 < 93, Thunderbird < 91.2, and Firefox ESR < 91.2. Published: November 02, 2021; 9:15:07 PM -0400 |
V4.0:(not available) V3.1: 8.8 HIGH V2.0: 6.8 MEDIUM |
CVE-2021-38498 |
During process shutdown, a document could have caused a use-after-free of a languages service object, leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 93, Thunderbird < 91.2, and Firefox ESR < 91.2. Published: November 02, 2021; 9:15:07 PM -0400 |
V4.0:(not available) V3.1: 7.5 HIGH V2.0: 5.0 MEDIUM |
CVE-2021-38497 |
Through use of reportValidity() and window.open(), a plain-text validation message could have been overlaid on another origin, leading to possible user confusion and spoofing attacks. This vulnerability affects Firefox < 93, Thunderbird < 91.2, and Firefox ESR < 91.2. Published: November 02, 2021; 9:15:07 PM -0400 |
V4.0:(not available) V3.1: 6.5 MEDIUM V2.0: 4.3 MEDIUM |
CVE-2021-38495 |
Mozilla developers reported memory safety bugs present in Thunderbird 78.13.0. 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 Thunderbird < 91.1 and Firefox ESR < 91.1. Published: November 02, 2021; 9:15:07 PM -0400 |
V4.0:(not available) V3.1: 8.8 HIGH V2.0: 6.8 MEDIUM |
CVE-2021-29991 |
Firefox incorrectly accepted a newline in a HTTP/3 header, interpretting it as two separate headers. This allowed for a header splitting attack against servers using HTTP/3. This vulnerability affects Firefox < 91.0.1 and Thunderbird < 91.0.1. Published: November 02, 2021; 9:15:07 PM -0400 |
V4.0:(not available) V3.1: 8.1 HIGH V2.0: 5.8 MEDIUM |
CVE-2021-40529 |
The ElGamal implementation in Botan through 2.18.1, as used in Thunderbird and other products, allows plaintext recovery because, during interaction between two cryptographic libraries, a certain dangerous combination of the prime defined by the receiver's public key, the generator defined by the receiver's public key, and the sender's ephemeral exponents can lead to a cross-configuration attack against OpenPGP. Published: September 06, 2021; 3:15:07 PM -0400 |
V4.0:(not available) V3.1: 5.9 MEDIUM V2.0: 2.6 LOW |
CVE-2021-29987 |
After requesting multiple permissions, and closing the first permission panel, subsequent permission panels will be displayed in a different position but still record a click in the default location, making it possible to trick a user into accepting a permission they did not want to. *This bug only affects Firefox on Linux. Other operating systems are unaffected.*. This vulnerability affects Firefox < 91 and Thunderbird < 91. Published: August 17, 2021; 4:15:07 PM -0400 |
V4.0:(not available) V3.1: 6.5 MEDIUM V2.0: 4.3 MEDIUM |
CVE-2021-29982 |
Due to incorrect JIT optimization, we incorrectly interpreted data from the wrong type of object, resulting in the potential leak of a single bit of memory. This vulnerability affects Firefox < 91 and Thunderbird < 91. Published: August 17, 2021; 4:15:07 PM -0400 |
V4.0:(not available) V3.1: 6.5 MEDIUM V2.0: 4.3 MEDIUM |
CVE-2021-29981 |
An issue present in lowering/register allocation could have led to obscure but deterministic register confusion failures in JITted code that would lead to a potentially exploitable crash. This vulnerability affects Firefox < 91 and Thunderbird < 91. Published: August 17, 2021; 4:15:07 PM -0400 |
V4.0:(not available) V3.1: 8.8 HIGH V2.0: 6.8 MEDIUM |
CVE-2009-4630 |
Mozilla Necko, as used in Firefox, SeaMonkey, and other applications, performs DNS prefetching of domain names contained in links within local HTML documents, which makes it easier for remote attackers to determine the network location of the application's user by logging DNS requests. NOTE: the vendor disputes the significance of this issue, stating "I don't think we necessarily need to worry about that case." Published: January 29, 2010; 1:30:00 PM -0500 |
V4.0:(not available) V3.x:(not available) V2.0: 5.0 MEDIUM |
CVE-2009-3984 |
Mozilla Firefox before 3.0.16 and 3.5.x before 3.5.6, and SeaMonkey before 2.0.1, allows remote attackers to spoof an SSL indicator for an http URL or a file URL by setting document.location to an https URL corresponding to a site that responds with a No Content (aka 204) status code and an empty body. Published: December 17, 2009; 12:30:00 PM -0500 |
V4.0:(not available) V3.x:(not available) V2.0: 6.8 MEDIUM |
CVE-2009-3983 |
Mozilla Firefox before 3.0.16 and 3.5.x before 3.5.6, and SeaMonkey before 2.0.1, allows remote attackers to send authenticated requests to arbitrary applications by replaying the NTLM credentials of a browser user. Published: December 17, 2009; 12:30:00 PM -0500 |
V4.0:(not available) V3.x:(not available) V2.0: 6.8 MEDIUM |
CVE-2009-3982 |
Multiple unspecified vulnerabilities in the JavaScript engine in Mozilla Firefox 3.5.x before 3.5.6, SeaMonkey before 2.0.1, and Thunderbird allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors. Published: December 17, 2009; 12:30:00 PM -0500 |
V4.0:(not available) V3.x:(not available) V2.0: 9.3 HIGH |
CVE-2009-3981 |
Unspecified vulnerability in the browser engine in Mozilla Firefox before 3.0.16, SeaMonkey before 2.0.1, and Thunderbird allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors. Published: December 17, 2009; 12:30:00 PM -0500 |
V4.0:(not available) V3.x:(not available) V2.0: 9.3 HIGH |