medium
6.5
CWE
119 120 130
Advisory Published
Updated

CVE-2020-8927: Buffer Overflow

First published: Tue Sep 15 2020(Updated: )

A buffer overflow exists in the Brotli library versions prior to 1.0.8 where an attacker controlling the input length of a "one-shot" decompression request to a script can trigger a crash, which happens when copying over chunks of data larger than 2 GiB. It is recommended to update your Brotli library to 1.0.8 or later. If one cannot update, we recommend to use the "streaming" API as opposed to the "one-shot" API, and impose chunk size limits.

Credit: cve-coordination@google.com cve-coordination@google.com

Affected SoftwareAffected VersionHow to fix
ubuntu/brotli<1.0.9-1
1.0.9-1
ubuntu/brotli<1.0.3-1ubuntu1~16.04.2
1.0.3-1ubuntu1~16.04.2
ubuntu/brotli<1.0.3-1ubuntu1.3
1.0.3-1ubuntu1.3
ubuntu/brotli<1.0.7-6ubuntu0.1
1.0.7-6ubuntu0.1
<1.0.8
=9.0
=10.0
=31
=32
=33
=34
=35
=36
=16.04
=18.04
=20.04
=15.2
>=5.0<=5.0.14
>=3.1<=3.1.22
>=7.0<7.0.9
>=7.1<7.1.6
>=7.2<7.2.2
>=16.0<=16.11
>=17.0<=17.0.7
=17.1
IBM Security Verify Access<1.0.8
Debian Debian Linux=9.0
Debian Debian Linux=10.0
Fedoraproject Fedora=31
Fedoraproject Fedora=32
Fedoraproject Fedora=33
Fedoraproject Fedora=34
Fedoraproject Fedora=35
Fedoraproject Fedora=36
Canonical Ubuntu Linux=16.04
Canonical Ubuntu Linux=18.04
Canonical Ubuntu Linux=20.04
openSUSE Leap=15.2
Microsoft .NET>=5.0<=5.0.14
Microsoft .NET Core>=3.1<=3.1.22
Microsoft PowerShell>=7.0<7.0.9
Microsoft PowerShell>=7.1<7.1.6
Microsoft PowerShell>=7.2<7.2.2
Microsoft Visual Studio 2019>=16.0<=16.11
Microsoft Visual Studio 2022>=17.0<=17.0.7
Microsoft Visual Studio 2022=17.1
IBM Security Verify Access<=10.0.0
debian/brotli
1.0.7-2+deb10u1
1.0.9-2
1.1.0-2

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Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the vulnerability ID for this vulnerability?

    The vulnerability ID for this vulnerability is CVE-2020-8927.

  • What is the severity of CVE-2020-8927?

    The severity of CVE-2020-8927 is medium with a severity value of 6.5.

  • Which software versions are affected by CVE-2020-8927?

    The Brotli library versions prior to 1.0.8 are affected by CVE-2020-8927.

  • How can I fix CVE-2020-8927?

    It is recommended to update your Brotli library to version 1.0.8 or newer to fix CVE-2020-8927.

  • Where can I find more information about CVE-2020-8927?

    You can find more information about CVE-2020-8927 at the following references: http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00108.html, https://github.com/google/brotli/releases/tag/v1.0.9, https://lists.debian.org/debian-lts-announce/2020/12/msg00003.html.

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