CVE-2023-1999

Published: 8 May 2023

There exists a use after free/double free in libwebp. An attacker can use the ApplyFiltersAndEncode() function and loop through to free best.bw and assign best = trial pointer. The second loop will then return 0 because of an Out of memory error in VP8 encoder, the pointer is still assigned to trial and the AddressSanitizer will attempt a double free.

Notes

Author	Note
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

Priority

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package	Release	Status
libwebp Launchpad, Ubuntu, Debian	xenial	Released (0.4.4-1ubuntu0.1~esm2) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
	bionic	Released (0.6.1-2ubuntu0.18.04.2)
	focal	Released (0.6.1-2ubuntu0.20.04.2)
	jammy	Released (1.2.2-2ubuntu0.22.04.1)
	kinetic	Released (1.2.2-2ubuntu0.22.10.1)
	lunar	Released (1.2.4-0.1ubuntu0.23.04.1)
	trusty	Needs triage
	upstream	Needs triage
	Patches: upstream: https://github.com/webmproject/libwebp/commit/a486d800b60d0af4cc0836bf7ed8f21e12974129
firefox Launchpad, Ubuntu, Debian	bionic	Not vulnerable (112.0.2+build1-0ubuntu0.18.04.1)
	focal	Not vulnerable
	jammy	Not vulnerable
	kinetic	Not vulnerable
	lunar	Not vulnerable
	trusty	Ignored (end of standard support)
	upstream	Released (112.0-1)
	xenial	Ignored (end of standard support)
	Patches: upstream: https://hg.mozilla.org/releases/mozilla-esr102/rev/53b805c752ff23080e100eda2b3b4280d4370b2e
mozjs38 Launchpad, Ubuntu, Debian	bionic	Needs triage
	focal	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Needs triage
	xenial	Does not exist
mozjs52 Launchpad, Ubuntu, Debian	bionic	Needs triage
	focal	Needs triage
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Needs triage
	xenial	Does not exist
mozjs68 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Needs triage
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Needs triage
	xenial	Does not exist
mozjs78 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Does not exist
	jammy	Needs triage
	lunar	Needs triage
	trusty	Does not exist
	upstream	Needs triage
	xenial	Does not exist
	kinetic	Ignored (end of life, was needs-triage)
mozjs91 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Does not exist
	jammy	Needs triage
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Needs triage
	xenial	Does not exist
thunderbird Launchpad, Ubuntu, Debian	bionic	Ignored (end of standard support, was needed)
	jammy	Ignored (bundled deps handled by new versions)
	lunar	Ignored (bundled deps handled by new versions)
	trusty	Ignored (end of standard support)
	upstream	Needs triage
	xenial	Ignored (end of standard support)
	kinetic	Ignored (end of life, was needed)
	focal	Ignored (bundled deps handled by new versions)

Severity score breakdown

Parameter	Value
Base score	7.5
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Bugs

Join the discussion

Canonical is offering Expanded Security Maintenance

Canonical is offering Ubuntu Expanded Security Maintenance (ESM) for security fixes and essential packages.

Find out more about ESM ›