CVE-2020-36330: Buffer Overflow

Published May 4, 2021
·
Updated

A flaw was found in libwebp in versions before 1.0.1. An out-of-bounds read was found in function ChunkVerifyAndAssign. The highest threat from this vulnerability is to data confidentiality and to the service availability.

Other sources

A heap-based buffer overflow was found in libwebp in versions before 1.0.1 ChunkVerifyAndAssign() in mux/muxread.c.

Reference: https://bugs.chromium.org/p/webp/issues/detail?id=386

— Red Hat

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

— Apple

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

11 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
webmproject Libwebp<1.0.1
Debian Debian Linux=9.0
Debian Debian Linux=10.0
redhat Enterprise Linux=8.0
NetApp ONTAP Select Deploy administration utility
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=1956853

Event History

May 21, 2021
CVE Published
via MITRE·04:19 PM
Data Sourced
via MITRE·04:19 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?

The vulnerability ID is CVE-2020-36330.

2

What is the severity of CVE-2020-36330?

The severity of CVE-2020-36330 is critical with a CVSS score of 9.1.

3

What is the affected software?

The affected software includes libwebp in versions before 1.0.1, Mozilla Firefox ESR, Debian Linux, Redhat Enterprise Linux, NetApp ONTAP Select Deploy administration utility, Apple iPadOS, and Apple iPhone OS.

4

What is the highest threat from CVE-2020-36330?

The highest threat from CVE-2020-36330 is to data confidentiality and service availability.

5

How can I fix CVE-2020-36330?

To fix CVE-2020-36330, update to version 1.0.1 or later of libwebp.

Company

Resources

Contact

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