SB2024011084 - Denial of service in Cloudflare zlib
Published: January 10, 2024 Updated: March 31, 2025
Security Bulletin ID
SB2024011084
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Heap-based buffer overflow (CVE-ID: CVE-2023-6992)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary error when handling compressed data in deflate.c. A remote attacker can pass specially crafted input to the application, trigger a heap-based buffer overflow and perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.