Out-of-bounds read in usrsctp - CVE-2019-20503

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Main Vulnerability Database Vulnerabilities #VU25856

Out-of-bounds read in usrsctp - CVE-2019-20503

Published: March 10, 2020 / Updated: January 11, 2021


Vulnerability identifier: #VU25856
CSH Severity: Medium
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-20503
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in sctp_load_addresses_from_init in usrsctp. A remote attacker can pass specially crafted data to the application, trigger out-of-bounds read error and read contents of memory on the system.


Affected software

usrsctp
SUSE Package Hub for SUSE Linux Enterprise
Gentoo Linux
Arch Linux
Red Hat Enterprise Linux Server
CentOS
Red Hat Enterprise Linux for Scientific Computing
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux for Power, big endian
Red Hat Enterprise Linux for IBM z Systems
Fedora
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for Power, big endian - Extended Update Support
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Oracle Solaris
Slackware Linux
SUSE Linux
Opensuse
Ubuntu
Red Hat Enterprise Linux Server for x86_64 - Update Services for SAP Solutions
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
thunderbird (Red Hat package)
firefox-esr (Alpine package)
firefox (Alpine package)
mozjs68 (Alpine package)
thunderbird (Alpine package)
chromium (Alpine package)
firefox (Ubuntu package)
firefox-esr (Debian package)
chromium (Debian package)
thunderbird (Ubuntu package)
thunderbird (Debian package)
chromium-browser (Red Hat package)
chromium
Firefox ESR
Mozilla Firefox
Google Chrome
Mozilla Thunderbird

How to mitigate CVE-2019-20503

Install update from vendor's website.

usrsctp - update to 0.9.4.0
thunderbird (Red Hat package) - addressed in versions 68.6.0-1.el6_10, 68.6.0-1.el7_7, 68.6.0-1.el8_0, 68.6.0-1.el8_1
Firefox ESR - update to 68.6.0
Mozilla Thunderbird - update to 68.6.0
Mozilla Firefox - update to 74.0
firefox-esr (Alpine package) - update to 68.6.0-r0
firefox (Alpine package) - update to 74.0-r0
mozjs68 (Alpine package) - update to 68.6.0-r0
thunderbird (Alpine package) - update to 68.7.0-r0
chromium (Alpine package) - update to 80.0.3987.149-r0
firefox (Ubuntu package) - addressed in versions 74.0+build3-0ubuntu0.16.04.1, 74.0+build3-0ubuntu0.18.04.1, 74.0+build3-0ubuntu0.19.10.1
firefox-esr (Debian package) - addressed in versions 68.6.0esr-1~deb9u1, 68.6.0esr-1~deb10u1
chromium (Debian package) - update to 80.0.3987.149-1~deb10u1
thunderbird (Ubuntu package) - addressed in versions 1:68.7.0+build1-0ubuntu0.16.04.2, 1:68.7.0+build1-0ubuntu0.18.04.1, 1:68.7.0+build1-0ubuntu0.19.10.1
thunderbird (Debian package) - addressed in versions 1:68.6.0-1~deb9u1, 1:68.6.0-1~deb10u1
chromium-browser (Red Hat package) - update to 80.0.3987.149-1.el6_10
chromium - addressed in versions 80.0.3987.149-1.el7, 80.0.3987.149-1.el8, 80.0.3987.149-1.fc30, 80.0.3987.149-1.fc31, 80.0.3987.149-1.fc32, 80.0.3987.162-1.el7, 80.0.3987.162-1.el8, 80.0.3987.163-1.el7, 80.0.3987.163-1.el8, 81.0.4044.113-1.el7, 81.0.4044.113-1.el8, 81.0.4044.113-2.el7, 81.0.4044.113-2.el8, 81.0.4044.122-1.el7, 81.0.4044.122-1.el8, 81.0.4044.138-1.el7, 81.0.4044.138-1.el8
Google Chrome - update to 80.0.3987.149

External References

Related Security Bulletins