SB2022020720 - Denial of service in F5 BIG-IP (Expat library)
Published: February 7, 2022
Security Bulletin ID
SB2022020720
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Out-of-bounds read (CVE-ID: CVE-2019-15903)
The vulnerability allows a remote attacker to gain access to potentially sensitive information or perform denial of service (DoS) attack.
The vulnerability exists due to a boundary error when processing XML documents within the expat library. A remote attacker can create a specially crafted XML file, pass it to the affected application, trigger out-of-bounds read error and read contents of memory on the system or crash the affected application.
Remediation
Install update from vendor's website.