CVE-2022-39394

Publication date 10 November 2022

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

Wasmtime is a standalone runtime for WebAssembly. Prior to version 2.0.2, there is a bug in Wasmtime’s C API implementation where the definition of the `wasmtime_trap_code` does not match its declared signature in the `wasmtime/trap.h` header file. This discrepancy causes the function implementation to perform a 4-byte write into a 1-byte buffer provided by the caller. This can lead to three zero bytes being written beyond the 1-byte location provided by the caller. This bug has been patched and users should upgrade to Wasmtime 2.0.2. This bug can be worked around by providing a 4-byte buffer casted to a 1-byte buffer when calling `wasmtime_trap_code`. Users of the `wasmtime` crate are not affected by this issue, only users of the C API function `wasmtime_trap_code` are affected.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
firefox	24.04 LTS noble	Not affected
	23.10 mantic	Not affected
	23.04 lunar	Not affected
	22.10 kinetic	Not affected
	22.04 LTS jammy	Not affected
	20.04 LTS focal	Ignored bundled deps handled by upstream in new versions
	18.04 LTS bionic	Ignored end of standard support, was needs-triage
	16.04 LTS xenial	Ignored end of standard support
	14.04 LTS trusty	Ignored end of standard support
mozjs38	22.10 kinetic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Not in release
	18.04 LTS bionic	Ignored
	16.04 LTS xenial	Not in release
	14.04 LTS trusty	Not in release
mozjs52	22.10 kinetic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Ignored
	18.04 LTS bionic	Ignored
	16.04 LTS xenial	Not in release
	14.04 LTS trusty	Not in release
mozjs68	22.10 kinetic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Ignored
	18.04 LTS bionic	Not in release
	16.04 LTS xenial	Not in release
	14.04 LTS trusty	Not in release
mozjs78	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	23.04 lunar	Ignored end of life, was needs-triage
	22.10 kinetic	Ignored end of life, was needs-triage
	22.04 LTS jammy	Ignored
	20.04 LTS focal	Not in release
	18.04 LTS bionic	Not in release
	16.04 LTS xenial	Not in release
	14.04 LTS trusty	Not in release
mozjs91	22.10 kinetic	Not in release
	22.04 LTS jammy	Ignored
	20.04 LTS focal	Not in release
	18.04 LTS bionic	Not in release
	16.04 LTS xenial	Not in release
	14.04 LTS trusty	Not in release
thunderbird	24.04 LTS noble	Ignored bundled deps handled by upstream in new versions
	23.10 mantic	Ignored end of life, was ignored [bundled deps handled by upstream in new versions]
	23.04 lunar	Ignored end of life, was ignored [bundled deps handled by upstream in new versions]
	22.10 kinetic	Ignored end of life, was needed
	22.04 LTS jammy	Ignored bundled deps handled by upstream in new versions
	20.04 LTS focal	Ignored bundled deps handled by upstream in new versions
	18.04 LTS bionic	Ignored end of standard support, was needed
	16.04 LTS xenial	Ignored end of standard support
	14.04 LTS trusty	Ignored end of standard support

Notes

tyhicks

mozjs contains a copy of the SpiderMonkey JavaScript engine

mdeslaur

starting with Ubuntu 22.04, the firefox package is just a script that installs the Firefox snap

Severity score breakdown

Parameter	Value
Base score	9.8 · Critical
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H