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CVE-2021-23961

Medium priority

Some fixes available 21 of 33

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...

7 affected packages

mozjs78, thunderbird, firefox, mozjs38, mozjs52...

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
mozjs78 Not in release Ignored Not in release Not in release
thunderbird Fixed Fixed Fixed Fixed
firefox Fixed Fixed Fixed Fixed
mozjs38 Not in release Not in release Not in release Ignored
mozjs52 Not in release Not in release Ignored Ignored
mozjs60 Not in release Not in release Not in release Not in release
mozjs68 Not in release Not in release Ignored Not in release
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CVE-2021-23960

Medium priority

Some fixes available 21 of 33

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.

8 affected packages

firefox, firefox-esr, mozjs38, mozjs52, mozjs60...

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
firefox Fixed Fixed Fixed Fixed
firefox-esr Not in release Not in release Not in release Not in release
mozjs38 Not in release Not in release Not in release Ignored
mozjs52 Not in release Not in release Ignored Ignored
mozjs60 Not in release Not in release Not in release Not in release
mozjs68 Not in release Not in release Ignored Not in release
mozjs78 Not in release Ignored Not in release Not in release
thunderbird Fixed Fixed Fixed Fixed
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CVE-2021-23954

Medium priority

Some fixes available 21 of 33

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 <...

8 affected packages

firefox, firefox-esr, mozjs38, mozjs52, mozjs60...

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
firefox Fixed Fixed Fixed Fixed
firefox-esr Not in release Not in release Not in release Not in release
mozjs38 Not in release Not in release Not in release Ignored
mozjs52 Not in release Not in release Ignored Ignored
mozjs60 Not in release Not in release Not in release Not in release
mozjs68 Not in release Not in release Ignored Not in release
mozjs78 Not in release Ignored Not in release Not in release
thunderbird Fixed Fixed Fixed Fixed
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CVE-2021-23953

Medium priority

Some fixes available 21 of 33

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 <...

8 affected packages

firefox, firefox-esr, mozjs38, mozjs52, mozjs60...

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
firefox Fixed Fixed Fixed Fixed
firefox-esr Not in release Not in release Not in release Not in release
mozjs38 Not in release Not in release Not in release Ignored
mozjs52 Not in release Not in release Ignored Ignored
mozjs60 Not in release Not in release Not in release Not in release
mozjs68 Not in release Not in release Ignored Not in release
mozjs78 Not in release Ignored Not in release Not in release
thunderbird Fixed Fixed Fixed Fixed
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CVE-2020-16044

Medium priority

Some fixes available 21 of 33

Use after free in WebRTC in Google Chrome prior to 88.0.4324.96 allowed a remote attacker to potentially exploit heap corruption via a crafted SCTP packet.

7 affected packages

mozjs78, firefox, mozjs38, mozjs52, mozjs60...

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
mozjs78 Not in release Ignored Not in release Not in release
firefox Fixed Fixed Fixed Fixed
mozjs38 Not in release Not in release Not in release Ignored
mozjs52 Not in release Not in release Ignored Ignored
mozjs60 Not in release Not in release Not in release Not in release
mozjs68 Not in release Not in release Ignored Not in release
thunderbird Fixed Fixed Fixed Fixed
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CVE-2020-35112

Low priority
Ignored

If a user downloaded a file lacking an extension on Windows, and then "Open"-ed it from the downloads panel, if there was an executable file in the downloads directory with the same name but with an executable extension (such as...

7 affected packages

mozjs38, mozjs52, thunderbird, mozjs78, firefox...

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
mozjs38 Not in release Not in release Not in release Ignored
mozjs52 Not in release Not in release Ignored Ignored
thunderbird Not affected Not affected Not in release Not affected
mozjs78 Not in release Ignored Not in release Not in release
firefox Not affected Not affected Not in release Not affected
mozjs60 Not in release Not in release Not in release Not in release
mozjs68 Not in release Not in release Ignored Not in release
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CVE-2020-15685

Medium priority
Fixed

During the plaintext phase of the STARTTLS connection setup, protocol commands could have been injected and evaluated within the encrypted session. This vulnerability affects Thunderbird < 78.7.

1 affected package

thunderbird

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
thunderbird Fixed Fixed Fixed
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CVE-2020-35113

Medium priority

Some fixes available 21 of 33

Mozilla developers reported memory safety bugs present in Firefox 83 and Firefox ESR 78.5. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to...

7 affected packages

firefox, thunderbird, mozjs78, mozjs38, mozjs52...

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
firefox Fixed Fixed Fixed Fixed
thunderbird Fixed Fixed Fixed Fixed
mozjs78 Not in release Ignored Not in release Not in release
mozjs38 Not in release Not in release Not in release Ignored
mozjs52 Not in release Not in release Ignored Ignored
mozjs60 Not in release Not in release Not in release Not in release
mozjs68 Not in release Not in release Ignored Not in release
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CVE-2020-35111

Low priority

Some fixes available 21 of 33

When an extension with the proxy permission registered to receive <all_urls>, the proxy.onRequest callback was not triggered for view-source URLs. While web content cannot navigate to such URLs, a user opening View Source could...

7 affected packages

mozjs78, firefox, mozjs38, mozjs52, thunderbird...

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
mozjs78 Not in release Ignored Not in release Not in release
firefox Fixed Fixed Fixed Fixed
mozjs38 Not in release Not in release Not in release Ignored
mozjs52 Not in release Not in release Ignored Ignored
thunderbird Fixed Fixed Fixed Fixed
mozjs60 Not in release Not in release Not in release Not in release
mozjs68 Not in release Not in release Ignored Not in release
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CVE-2020-26978

Medium priority

Some fixes available 21 of 33

Using techniques that built on the slipstream research, 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 < 84,...

7 affected packages

firefox, mozjs38, thunderbird, mozjs52, mozjs60...

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
firefox Fixed Fixed Fixed Fixed
mozjs38 Not in release Not in release Not in release Ignored
thunderbird Fixed Fixed Fixed Fixed
mozjs52 Not in release Not in release Ignored Ignored
mozjs60 Not in release Not in release Not in release Not in release
mozjs78 Not in release Ignored Not in release Not in release
mozjs68 Not in release Not in release Ignored Not in release
Show all 7 packages Show less packages