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AUSCERT External Security Bulletin Redistribution
ESB-2019.0125
systemd vulnerabilities
14 January 2019
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AusCERT Security Bulletin Summary
---------------------------------
Product: systemd
Publisher: Ubuntu
Operating System: Ubuntu
Linux variants
Impact/Access: Root Compromise -- Remote/Unauthenticated
Access Privileged Data -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2018-16866 CVE-2018-16865 CVE-2018-16864
Reference: ESB-2019.0111
Original Bulletin:
http://www.ubuntu.com/usn/usn-3855-1
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Ubuntu Security Notice USN-3855-1
Last Modified: January 11, 2019
Security Bulletin Report:systemd vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
- - Ubuntu 18.10
- - Ubuntu 18.04 LTS
- - Ubuntu 16.04 LTS
Summary:
Several security issues were fixed in systemd.
Software Description:
- - systemd: system and service manager
Details:
It was discovered that systemd-journald allocated variable-length buffers=
for certain message fields on the stack. A local attacker could
potentially exploit this to cause a denial of service, or execute
arbitrary code. (CVE-2018-16864)
It was discovered that systemd-journald allocated variable-length arrays
of objects representing message fields on the stack. A local attacker
could potentially exploit this to cause a denial of service, or execute
arbitrary code. (CVE-2018-16865)
An out-of-bounds read was discovered in systemd-journald. A local
attacker could potentially exploit this to obtain sensitive information
and bypass ASLR protections. (CVE-2018-16866)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 18.10:
systemd - 239-7ubuntu10.6
Ubuntu 18.04 LTS:
systemd - 237-3ubuntu10.11
Ubuntu 16.04 LTS:
systemd - 229-4ubuntu21.15
After a standard system update you need to reboot your computer to make
all the necessary changes.
References:
https://usn.ubuntu.com/usn/usn-3855-1
CVE-2018-16864, CVE-2018-16865, CVE-2018-16866
Package Information:
https://launchpad.net/ubuntu/+source/systemd/239-7ubuntu10.6
https://launchpad.net/ubuntu/+source/systemd/237-3ubuntu10.11
https://launchpad.net/ubuntu/+source/systemd/229-4ubuntu21.15
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