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CVE-2021-29985

Medium priority

Some fixes available 18 of 27

A use-after-free vulnerability in media channels could have led to memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 78.13, Thunderbird < 91, Firefox ESR < 78.13, and Firefox < 91.

6 affected packages

firefox, mozjs38, mozjs52, mozjs68, mozjs78, thunderbird

Package	24.04 LTS	22.04 LTS	20.04 LTS	18.04 LTS	16.04 LTS
firefox	Fixed	Fixed	Fixed	Fixed	Ignored
mozjs38	Not in release	Not in release	Not in release	Ignored	Not in release
mozjs52	Not in release	Not in release	Ignored	Ignored	Not in release
mozjs68	Not in release	Not in release	Ignored	Not in release	Not in release
mozjs78	Not in release	Ignored	Not in release	Not in release	Not in release
thunderbird	Fixed	Fixed	Fixed	Fixed	Ignored

CVE-2021-29984

Medium priority

Some fixes available 18 of 27

Instruction reordering resulted in a sequence of instructions that would cause an object to be incorrectly considered during garbage collection. This led to memory corruption and a potentially exploitable crash. This vulnerability...

6 affected packages

firefox, mozjs38, mozjs52, mozjs68, mozjs78, thunderbird

Package	24.04 LTS	22.04 LTS	20.04 LTS	18.04 LTS	16.04 LTS
firefox	Fixed	Fixed	Fixed	Fixed	Ignored
mozjs38	Not in release	Not in release	Not in release	Ignored	Not in release
mozjs52	Not in release	Not in release	Ignored	Ignored	Not in release
mozjs68	Not in release	Not in release	Ignored	Not in release	Not in release
mozjs78	Not in release	Ignored	Not in release	Not in release	Not in release
thunderbird	Fixed	Fixed	Fixed	Fixed	Ignored

CVE-2021-29982

Low priority

Some fixes available 11 of 21

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.

6 affected packages

firefox, mozjs38, mozjs52, mozjs68, mozjs78, thunderbird

Package	24.04 LTS	22.04 LTS	20.04 LTS	18.04 LTS	16.04 LTS
firefox	Fixed	Fixed	Fixed	Fixed	Ignored
mozjs38	Not in release	Not in release	Not in release	Ignored	Not in release
mozjs52	Not in release	Not in release	Ignored	Ignored	Not in release
mozjs68	Not in release	Not in release	Ignored	Not in release	Not in release
mozjs78	Not in release	Ignored	Not in release	Not in release	Not in release
thunderbird	Not affected	Not affected	Fixed	Fixed	Ignored

CVE-2021-29981

Medium priority

Some fixes available 11 of 21

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...

6 affected packages

firefox, mozjs38, mozjs52, mozjs68, mozjs78, thunderbird

Package	24.04 LTS	22.04 LTS	20.04 LTS	18.04 LTS	16.04 LTS
firefox	Fixed	Fixed	Fixed	Fixed	Ignored
mozjs38	Not in release	Not in release	Not in release	Ignored	Not in release
mozjs52	Not in release	Not in release	Ignored	Ignored	Not in release
mozjs68	Not in release	Not in release	Ignored	Not in release	Not in release
mozjs78	Not in release	Ignored	Not in release	Not in release	Not in release
thunderbird	Not affected	Not affected	Fixed	Fixed	Ignored

CVE-2021-29980

Medium priority

Some fixes available 18 of 27

Uninitialized memory in a canvas object could have caused an incorrect free() leading to memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 78.13, Thunderbird < 91, Firefox ESR < 78.13,...

6 affected packages

firefox, mozjs38, mozjs52, mozjs68, mozjs78, thunderbird

Package	24.04 LTS	22.04 LTS	20.04 LTS	18.04 LTS	16.04 LTS
firefox	Fixed	Fixed	Fixed	Fixed	Ignored
mozjs38	Not in release	Not in release	Not in release	Ignored	Not in release
mozjs52	Not in release	Not in release	Ignored	Ignored	Not in release
mozjs68	Not in release	Not in release	Ignored	Not in release	Not in release
mozjs78	Not in release	Ignored	Not in release	Not in release	Not in release
thunderbird	Fixed	Fixed	Fixed	Fixed	Ignored

CVE-2021-29973

Negligible priority

Ignored

Password autofill was enabled without user interaction on insecure websites on Firefox for Android. This was corrected to require user interaction with the page before a user's password would be entered by the browser's autofill...

6 affected packages

firefox, mozjs38, mozjs52, mozjs68, mozjs78, thunderbird

Package	24.04 LTS	22.04 LTS	20.04 LTS	18.04 LTS	16.04 LTS
firefox	Not affected	Not affected	Not affected	Not affected	Ignored
mozjs38	Not in release	Not in release	Not in release	Ignored	Not in release
mozjs52	Not in release	Not in release	Ignored	Ignored	Not in release
mozjs68	Not in release	Not in release	Ignored	Not in release	Not in release
mozjs78	Not in release	Ignored	Not in release	Not in release	Not in release
thunderbird	Not affected	Not affected	Not affected	Not affected	Not affected

CVE-2021-29971

Negligible priority

Ignored

If a user had granted a permission to a webpage and saved that grant, any webpage running on the same host - irrespective of scheme or port - would be granted that permission. *This bug only affects Firefox for Android. Other...

6 affected packages

firefox, mozjs38, mozjs52, mozjs68, mozjs78, thunderbird

Package	24.04 LTS	22.04 LTS	20.04 LTS	18.04 LTS	16.04 LTS
firefox	Not affected	Not affected	Not affected	Not affected	Ignored
mozjs38	Not in release	Not in release	Not in release	Ignored	Not in release
mozjs52	Not in release	Not in release	Ignored	Ignored	Not in release
mozjs68	Not in release	Not in release	Ignored	Not in release	Not in release
mozjs78	Not in release	Ignored	Not in release	Not in release	Not in release
thunderbird	Not affected	Not affected	Not affected	Not affected	Not affected

CVE-2021-29969

Medium priority

Some fixes available 7 of 8

If Thunderbird was configured to use STARTTLS for an IMAP connection, and an attacker injected IMAP server responses prior to the completion of the STARTTLS handshake, then Thunderbird didn't ignore the injected data. This could...

1 affected packages

thunderbird

Package	24.04 LTS	22.04 LTS	20.04 LTS	18.04 LTS	16.04 LTS
thunderbird	—	Fixed	Fixed	Fixed	Ignored

CVE-2020-15660

Medium priority

Not affected

Missing checks on Content-Type headers in geckodriver before 0.27.0 could lead to a CSRF vulnerability, that might, when paired with a specifically prepared request, lead to remote code execution.

6 affected packages

firefox, mozjs38, mozjs52, mozjs68, mozjs78, thunderbird

Package	24.04 LTS	22.04 LTS	20.04 LTS	18.04 LTS	16.04 LTS
firefox	—	Not affected	Not affected	Not affected	Not affected
mozjs38	—	Not in release	Not in release	Not affected	Not in release
mozjs52	—	Not in release	Not affected	Not affected	Not in release
mozjs68	—	Not in release	Not affected	Not in release	Not in release
mozjs78	—	Not affected	Not in release	Not in release	Not in release
thunderbird	—	Not affected	Not affected	Not affected	Not affected

CVE-2021-29977

Medium priority

Some fixes available 10 of 23

Mozilla developers reported memory safety bugs present in Firefox 89. 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....

6 affected packages

firefox, mozjs38, mozjs52, mozjs68, mozjs78, thunderbird

Package	24.04 LTS	22.04 LTS	20.04 LTS	18.04 LTS	16.04 LTS
firefox	Fixed	Fixed	Fixed	Fixed	Ignored
mozjs38	Not in release	Not in release	Not in release	Ignored	Not in release
mozjs52	Not in release	Not in release	Ignored	Ignored	Not in release
mozjs68	Not in release	Not in release	Ignored	Not in release	Not in release
mozjs78	Not in release	Ignored	Not in release	Not in release	Not in release
thunderbird	Not affected	Not affected	Not affected	Not affected	Not affected

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