Out-of-bounds write in Mozilla NSS - CVE-2019-11745

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Main Vulnerability Database Vulnerabilities #VU23050

Out-of-bounds write in Mozilla NSS - CVE-2019-11745

Published: November 28, 2019


Vulnerability identifier: #VU23050
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-11745
CWE-ID: CWE-787
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error when processing untrusted input within the NSC_EncryptUpdate() function in /lib/softoken/pkcs11c.c, when performing padding operations in Mozilla NSS. A remote attacker can pass specially crafted data to the affected application, trigger out-of-bounds write and execute arbitrary code on the target system.


Affected software

Mozilla NSS
Arch Linux
Gentoo Linux
Amazon Linux AMI
Red Hat Enterprise Linux for Scientific Computing
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux for Power
Red Hat Enterprise Linux for IBM System z (Structure A)
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for Power 9
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux for Power, big endian - Extended Update Support
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux EUS Compute Node
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for x86_64
Slackware Linux
Opensuse
nss-softokn (Red Hat package)
nss (Ubuntu package)
nss (Debian package)
nss (Alpine package)
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
firefox (Ubuntu package)
thunderbird (Ubuntu package)
Secure Remote Services (SRS) Virtual Edition
Data Computing Appliance (DCA)
Mozilla Thunderbird
Firefox ESR
Mozilla Firefox
RUGGEDCOM ROS
Juniper Junos Space

How to mitigate CVE-2019-11745

Install updates from vendor's website.

Mozilla NSS - addressed in versions 3.44.3, 3.47.1
nss-softokn (Red Hat package) - addressed in versions 3.28.3-9.el7_4, 3.36.0-6.el7_5, 3.36.0-6.el7_6
nss (Ubuntu package) - addressed in versions 2:3.28.4-0ubuntu0.16.04.8, 2:3.35-2ubuntu2.5, 2:3.42-1ubuntu2.3, 2:3.45-1ubuntu2.1
Secure Remote Services (SRS) Virtual Edition - update to 3.46.00.04
nss (Debian package) - update to 2:3.42.1-1+deb10u2
nss (Alpine package) - update to 3.44.3-r0
firefox (Ubuntu package) - addressed in versions 71.0+build5-0ubuntu0.16.04.1, 71.0+build5-0ubuntu0.18.04.1, 71.0+build5-0ubuntu0.19.04.1, 71.0+build5-0ubuntu0.19.10.1
thunderbird (Ubuntu package) - addressed in versions 1:68.4.1+build1-0ubuntu0.18.04.1, 1:68.4.1+build1-0ubuntu0.19.10.1, 1:68.7.0+build1-0ubuntu0.16.04.2
Mozilla Thunderbird - update to 68.3.0
Firefox ESR - update to 68.3.0
Mozilla Firefox - update to 71.0
RUGGEDCOM ROS - update to 2.14.0
Data Computing Appliance (DCA) - update to 4.3.0.0
Juniper Junos Space - update to 20.3R1

External References

Related Security Bulletins