medium
6.5
CWE
125
Advisory Published
Updated

CVE-2019-20503

First published: Fri Mar 06 2020(Updated: )

Last updated 24 July 2024

Credit: natashenka Google Project Zeronatashenka Google Project Zeronatashenka Google Project Zeronatashenka Google Project Zero cve@mitre.org cve@mitre.org cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Apple Safari<13.1.1
13.1.1
Apple watchOS<6.2.5
6.2.5
Apple tvOS<13.4.5
13.4.5
Apple iOS<13.5
13.5
Apple iPadOS<13.5
13.5
Mozilla Firefox ESR<68.6
68.6
Mozilla Thunderbird<68.6
68.6
redhat/firefox<68.6
68.6
redhat/thunderbird<68.6
68.6
redhat/chromium-browser<80.0.3987.149
80.0.3987.149
Mozilla Firefox<74
74
Usrsctp Project Usrsctp<2019-12-20
Usrsctp Project Usrsctp<0.9.4.0
Debian Debian Linux=8.0
Debian Debian Linux=9.0
Debian Debian Linux=10.0
Canonical Ubuntu Linux=16.04
Canonical Ubuntu Linux=18.04
Canonical Ubuntu Linux=19.10
debian/chromium
120.0.6099.224-1~deb11u1
130.0.6723.91-1~deb12u1
131.0.6778.204-1~deb12u1
131.0.6778.139-1
131.0.6778.204-1
debian/firefox
133.0.3-1
debian/firefox-esr
115.14.0esr-1~deb11u1
128.5.0esr-1~deb11u1
128.3.1esr-1~deb12u1
128.5.0esr-1~deb12u1
128.5.0esr-1
128.5.1esr-1
debian/libusrsctp
0.9.3.0+20201102-2
0.9.5.0-2
debian/thunderbird
1:115.12.0-1~deb11u1
1:128.5.0esr-1~deb11u1
1:115.16.0esr-1~deb12u1
1:128.5.0esr-1~deb12u1
1:128.5.2esr-1

Remedy

https://bugs.chromium.org/p/project-zero/issues/detail?id=1992

Remedy

https://github.com/sctplab/usrsctp/commit/790a7a2555aefb392a5a69923f1e9d17b4968467

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Peer vulnerabilities

(Found alongside the following vulnerabilities)

Frequently Asked Questions

  • What is CVE-2019-20503?

    CVE-2019-20503 is a vulnerability in WebRTC that allows for out of bounds reads when parameters are partially outside a chunk.

  • How does CVE-2019-20503 impact Mozilla Firefox?

    CVE-2019-20503 affects Mozilla Firefox version up to 74 and Firefox ESR version up to 68.6, potentially allowing for out of bounds reads.

  • How does CVE-2019-20503 impact Apple Safari, iOS, iPadOS, watchOS, and tvOS?

    CVE-2019-20503 impacts Apple Safari, iOS, iPadOS, watchOS, and tvOS versions up to 13.1.1, 13.5, 13.5, 6.2.5, and 13.4.5 respectively, potentially allowing for out of bounds reads.

  • What is the severity of CVE-2019-20503?

    CVE-2019-20503 is classified as a medium severity vulnerability with a severity score of 4 out of 10.

  • How can I fix CVE-2019-20503?

    To fix CVE-2019-20503, update to the latest version of the affected software, such as Mozilla Firefox 74 or Apple Safari 13.1.1.

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