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AUSCERT External Security Bulletin Redistribution
ESB-2019.4507
Ubuntu: NSS vulnerability
28 November 2019
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AusCERT Security Bulletin Summary
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Product: NSS
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction
Denial of Service -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2019-11745
Reference: ESB-2019.4449
Original Bulletin:
https://usn.ubuntu.com/4203-1/
https://usn.ubuntu.com/4203-2/
Comment: This bulletin contains two (2) Ubuntu security advisories.
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USN-4203-1: NSS vulnerability
27 November 2019
nss vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 19.10
o Ubuntu 19.04
o Ubuntu 18.04 LTS
o Ubuntu 16.04 LTS
Summary
NSS could be made to crash or run programs if it received specially crafted
input.
Software Description
o nss - Network Security Service library
Details
It was discovered that NSS incorrectly handled certain memory operations. A
remote attacker could use this issue to cause NSS to crash, resulting in a
denial of service, or possibly execute arbitrary code.
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 19.10
libnss3 - 2:3.45-1ubuntu2.1
Ubuntu 19.04
libnss3 - 2:3.42-1ubuntu2.3
Ubuntu 18.04 LTS
libnss3 - 2:3.35-2ubuntu2.5
Ubuntu 16.04 LTS
libnss3 - 2:3.28.4-0ubuntu0.16.04.8
To update your system, please follow these instructions: https://
wiki.ubuntu.com/Security/Upgrades .
After a standard system update you need to restart any applications that use
NSS, such as Evolution, to make all the necessary changes.
References
o CVE-2019-11745
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USN-4203-2: NSS vulnerability
27 November 2019
nss vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 14.04 ESM
o Ubuntu 12.04 ESM
Summary
NSS could be made to crash or run programs if it received specially crafted
input.
Software Description
o nss - Network Security Service library
Details
USN-4203-1 fixed a vulnerability in NSS. This update provides the corresponding
update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.
Original advisory details:
It was discovered that NSS incorrectly handled certain memory operations. A
remote attacker could use this issue to cause NSS to crash, resulting in a
denial of service, or possibly execute arbitrary code.
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 14.04 ESM
libnss3 - 2:3.28.4-0ubuntu0.14.04.5+esm2
Ubuntu 12.04 ESM
libnss3 - 2:3.28.4-0ubuntu0.12.04.5
To update your system, please follow these instructions: https://
wiki.ubuntu.com/Security/Upgrades .
After a standard system update you need to restart any applications that use
NSS, such as Evolution, to make all the necessary changes.
References
o USN-4203-1
o CVE-2019-11745
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