CVE-2020-8019 syslog-ng: Local privilege escalation from new to root in %post
Local attackers can escalate privileges to root via symlink following in syslog-ng package installation scripts on SUSE Linux.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-8019?
CVE-2020-8019 is a high-severity vulnerability in SUSE Linux Enterprise Debuginfo 11-SP3, published on 29 Jun 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A UNIX Symbolic Link (Symlink) Following vulnerability in the packaging of syslog-ng of SUSE Linux Enterprise Debuginfo 11-SP3, SUSE Linux Enterprise Debuginfo 11-SP4, SUSE Linux Enterprise Module for Legacy Software 12, SUSE Linux Enterprise Point of Sale 11-SP3, SUSE Linux Enterprise Server 11-SP4-LTSS, SUSE Linux Enterprise Server for SAP 12-SP1; openSUSE Backports SLE-15-SP1, openSUSE Leap 15.1 allowed local attackers controlling the user news to escalate their privileges to root. This issue affects: SUSE Linux Enterprise Debuginfo 11-SP3 syslog-ng versions prior to 2.0.9-27.34.40.5.1. SUSE Linux Enterprise Debuginfo 11-SP4 syslog-ng versions prior to 2.0.9-27.34.40.5.1. SUSE Linux Enterprise Module for Legacy Software 12 syslog-ng versions prior to 3.6.4-12.8.1. SUSE Linux Enterprise Point of Sale 11-SP3 syslog-ng versions prior to 2.0.9-27.34.40.5.1. SUSE Linux Enterprise Server 11-SP4-LTSS syslog-ng versions prior to 2.0.9-27.34.40.5.1. SUSE Linux Enterprise Server for SAP 12-SP1 syslog-ng versions prior to 3.6.4-12.8.1. openSUSE Backports SLE-15-SP1 syslog-ng versions prior to 3.19.1-bp151.4.6.1. openSUSE Leap 15.1 syslog-ng versions prior to 3.19.1-lp151.3.6.1.
Weakness: CWE-61
Which versions are affected by CVE-2020-8019?
It affects 1 product.
Linux distribution packages (4)
syslog-ng SUSE:Linux Enterprise Module for Legacy 12 | All versions | 3.6.4-12.8.1 |
syslog-ng SUSE:Linux Enterprise Point of Sale 11 SP3 | All versions | 2.0.9-27.34.40.5.1 |
syslog-ng SUSE:Linux Enterprise Server 11 SP4-LTSS | All versions | 2.0.9-27.34.40.5.1 |
syslog-ng SUSE:Linux Enterprise Server for SAP Applications 12 SP1 | All versions | 3.6.4-12.8.1 |
Products include Oneidentity Syslog-Ng.
How do I fix CVE-2020-8019?
Apply the vendor's patch.
Is CVE-2020-8019 being exploited?
There is no known exploitation of CVE-2020-8019 in the wild and no public exploit code.
Other vulnerabilities in SUSE Linux Enterprise Debuginfo 11-SP3
Sources
Also known as GHSA-4j55-xp84-jjv2, SUSE-SU-2020:1221-1, SUSE-SU-2020:14369-1.