use-after-free in HTTP Connection Headers parsing (CVE-2023-49606) #shorts #breaking

CVE

Today, we're discussing CVE-2023-49606, which involves a use-after-free issue found in the parsing of HTTP Connection Headers in certain versions of Tinyproxy, specifically versions 1.10.0 and 1.11.1. A use-after-free vulnerability occurs when a program continues to use a pointer after it has freed the memory it points to, which can lead to unpredictable behavior or malicious exploitation. In this case, attackers could exploit the flaw to execute arbitrary code remotely. This vulnerability is significant for administrators who manage Tinyproxy servers, as it potentially allows attackers to take control of an affected server. This CVE has existed for about 5 months and is not considered a zero-day vulnerability since it was previously known and identified.

This chain involves the following actors

This following systems are involved

Attack entry point

Remediation actions

Exploitation actions

• https://talosintelligence.com/vulnerability_reports/TALOS-2023-1889
• http://www.openwall.com/lists/oss-security/2024/05/07/1