SB2019110518 - Red Hat update for yum
Published: November 5, 2019 Updated: November 6, 2019
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 secuirty vulnerabilities.
1) Input validation error (CVE-ID: CVE-2018-20534)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input processed by the pool_whatprovides function, as defined in the ext/pool.h source code file of the affected software. A remote attacker can trick the victim into opening or executing a file that submits malicious input, trigger an illegal access address condition and cause the affected software to crash, resulting in a DoS condition.
2) Use-after-free (CVE-ID: CVE-2019-3817)
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error when merging two ObjMRTrees while processing XML files in libcomps. A remote attacker can create a specially crafted XML file, pass it to the application, trigger a use-after-free error and crash the application or execute arbitrary code on the system.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
Remediation
Install update from vendor's website.