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CVE-2021-29952

Medium priority

Some fixes available 10 of 23

When Web Render components were destructed, a race condition could have caused undefined behavior, and we presume that with enough effort may have been exploitable to run arbitrary code. This vulnerability affects Firefox < 88.0.1...

6 affected packages

firefox, mozjs38, mozjs52, mozjs68, mozjs78, thunderbird

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
mozjs52 Not in release Not in release Ignored Ignored
mozjs68 Not in release Not in release Ignored Not in release
mozjs78 Not in release Ignored Not in release Not in release
thunderbird Not affected Not affected Not in release Not affected
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CVE-2021-29950

Low priority
Fixed

Thunderbird unprotects a secret OpenPGP key prior to using it for a decryption, signing or key import task. If the task runs into a failure, the secret key may remain in memory in its unprotected state. This vulnerability affects...

1 affected package

thunderbird

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
thunderbird Not affected Fixed Fixed
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CVE-2021-29949

Low priority
Fixed

When loading the shared library that provides the OTR protocol implementation, Thunderbird will initially attempt to open it using a filename that isn't distributed by Thunderbird. If a computer has already been infected with a...

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-2021-29948

Low priority
Fixed

Signatures are written to disk before and read during verification, which might be subject to a race condition when a malicious local process or user is replacing the file. This vulnerability affects Thunderbird < 78.10.

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-2021-29946

Medium priority

Some fixes available 21 of 33

Ports that were written as an integer overflow above the bounds of a 16-bit integer could have bypassed port blocking restrictions when used in the Alt-Svc header. This vulnerability affects Firefox ESR < 78.10, Thunderbird <...

7 affected packages

firefox, firefox-esr, mozjs38, mozjs52, mozjs68...

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
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-2021-29945

Medium priority

Some fixes available 21 of 33

The WebAssembly JIT could miscalculate the size of a return type, which could lead to a null read and result in a crash. *Note: This issue only affected x86-32 platforms. Other platforms are unaffected.*. This vulnerability...

7 affected packages

firefox, firefox-esr, mozjs38, mozjs52, mozjs68...

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
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-2021-24002

Medium priority

Some fixes available 21 of 33

When a user clicked on an FTP URL containing encoded newline characters (%0A and %0D), the newlines would have been interpreted as such and allowed arbitrary commands to be sent to the FTP server. This vulnerability...

7 affected packages

firefox, firefox-esr, mozjs38, mozjs52, mozjs68...

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
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-2021-23999

Medium priority

Some fixes available 21 of 33

If a Blob URL was loaded through some unusual user interaction, it could have been loaded by the System Principal and granted additional privileges that should not be granted to web content. This vulnerability affects Firefox ESR...

7 affected packages

firefox, firefox-esr, mozjs38, mozjs52, mozjs68...

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
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-2021-23998

Medium priority

Some fixes available 21 of 33

Through complicated navigations with new windows, an HTTP page could have inherited a secure lock icon from an HTTPS page. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.

7 affected packages

firefox, firefox-esr, mozjs38, mozjs52, mozjs68...

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
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-2021-23995

Medium priority

Some fixes available 21 of 33

When Responsive Design Mode was enabled, it used references to objects that were previously freed. We presume that with enough effort this could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR <...

7 affected packages

firefox, firefox-esr, mozjs38, mozjs52, mozjs68...

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
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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