CVE-2020-36329: Use After Free

Published May 4, 2021
·
Updated

A flaw was found in libwebp in versions before 1.0.1. A use-after-free was found due to a thread being killed too early. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Other sources

ActionKit. An input validation issue was addressed with improved input validation.

— Apple

An use-after-free was found in libwebp in versions before 1.0.1 in EmitFancyRGB() in dec/iodec.c.

Reference: https://bugs.chromium.org/p/webp/issues/detail?id=385

— Red Hat

Analytics. This issue was addressed with a new entitlement.

— Apple

Audio. This issue was addressed with improved checks.

— Apple

AVEVideoEncoder. A memory corruption issue was addressed with improved state management.

— Apple

Credit

Zachary Keffaber@@QuickUpdate5, Denis Tokarev@@illusionofcha0s, tr3e, George Nosenko, JunDong Xie(Ant Security Light), ryuzaki, Mickey Jin@@patch1t(Trend Micro), Sunglin(Knownsec 404 team), Yizhuo Wang(Group of Software Security In Progress), Tim Michaud@@TimGMichaud(Zoom Video Communications), Linus Henze (pinauten.de), Csaba Fitzl@@theevilbit(Offensive Security), tr3e(Trend Micro Zero Day Initiative), hjy79425575(Trend Micro Zero Day Initiative), Matthew Denton(Google Chrome Security), Jzhu(Baidu Security), Ye Zhang@@co0py_Cat(Baidu Security), CFF(Topsec Alpha Team), CVE-2021-3518, CVE-2018-25010, CVE-2018-25011, CVE-2018-25014, CVE-2020-36328, CVE-2020-36329, CVE-2020-36330, CVE-2020-36331, Anonymous(Trend Micro Zero Day Initiative), Christoph Guttandin(Media Codings), Sergei Glazunov(Google Project Zero), Ivan Fratric(Google Project Zero), vm_call, Nozhdar Abdulkhaleq Shukri

Affected Software

15 affected componentsFixes available
debian/libwebp
0.6.1-2+deb10u10.6.1-2+deb10u30.6.1-2.1+deb11u21.2.4-0.2+deb12u11.3.2-0.3
redhat/libwebp<1.0.1
1.0.1
IBM Cloud Pak for Security (CP4S)<=1.7.2.0
IBM Cloud Pak for Security (CP4S)<=1.7.1.0
IBM Cloud Pak for Security (CP4S)<=1.7.0.0
webmproject Libwebp<1.0.1
redhat Enterprise Linux=7.0
redhat Enterprise Linux=8.0
NetApp ONTAP Select Deploy administration utility
Debian Debian Linux=9.0
Debian Debian Linux=10.0
Apple iPadOS<14.7
Apple iPhone OS<14.7
Apple iOS<14.7
14.7
Apple iPadOS<14.7
14.7

Remediation

Patch Available

https://bugzilla.redhat.com/show_bug.cgi?id=1956843

Event History

May 21, 2021
CVE Published
via MITRE·04:15 PM
Data Sourced
via MITRE·04:15 PM
DescriptionWeakness
Feb 24, 2026
Data Sourced
via Apple·07:00 PM
DescriptionWeaknessAffected Software
Updated
via Apple·07:00 PM
DescriptionWeakness

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

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Frequently Asked Questions

1

What is the vulnerability ID of this flaw in libwebp?

The vulnerability ID of this flaw in libwebp is CVE-2020-36329.

2

What is the severity rating of CVE-2020-36329?

CVE-2020-36329 has a severity rating of 9.8 (Critical).

3

What is the affected software of CVE-2020-36329?

The affected software includes IBM Cloud Pak for Security (CP4S), Mozilla Firefox ESR, Redhat Enterprise Linux, NetApp ONTAP Select Deploy administration utility, Debian Debian Linux, Apple iPadOS, and Apple iPhone OS.

4

How does the vulnerability in libwebp impact the system?

The vulnerability in libwebp could allow a remote attacker to execute arbitrary code on the system, obtain sensitive information, or cause a denial of service.

5

Are there any fixes or patches available for CVE-2020-36329?

Yes, there are fixes and patches available for CVE-2020-36329. It is recommended to update to libwebp version 1.0.1 or later to mitigate this vulnerability.

Company

Resources

Contact

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