Squid CVE-2023-49286: DoS via Helper Process Management (before 6.5)
CVE-2023-49286 Published on December 4, 2023
Denial of Service in Helper Process management
Squid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. Due to an Incorrect Check of Function Return Value bug Squid is vulnerable to a Denial of Service attack against its Helper process management. This bug is fixed by Squid version 6.5. Users are advised to upgrade. There are no known workarounds for this vulnerability.
Vulnerability Analysis
CVE-2023-49286 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.
Weakness Types
What is an assertion failure Vulnerability?
The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary.
CVE-2023-49286 has been classified to as an assertion failure vulnerability or weakness.
Incorrect Check of Function Return Value
The software incorrectly checks a return value from a function, which prevents the software from detecting errors or exceptional conditions. Important and common functions will return some value about the success of its actions. This will alert the program whether or not to handle any errors caused by that function.
Products Associated with CVE-2023-49286
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Affected Versions
squid-cache squid Version < 6.5 is affected by CVE-2023-49286Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.