Vulnerability Details : CVE-2020-25097

An issue was discovered in Squid through 4.13 and 5.x through 5.0.4. Due to improper input validation, it allows a trusted client to perform HTTP Request Smuggling and access services otherwise forbidden by the security controls. This occurs for certain uri_whitespace configuration settings.
Published 2021-03-19 05:15:12
Updated 2022-04-05 18:04:29
Source MITRE
View at NVD,   CVE.org
Vulnerability category: Input validation

Threat overview for CVE-2020-25097

Top countries where our scanners detected CVE-2020-25097
Top open port discovered on systems with this issue 3128
IPs affected by CVE-2020-25097 3,267,398
Threat actors abusing to this issue? Yes
Find out if you* are affected by CVE-2020-25097!
*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2020-25097

EPSS FAQ
0.30%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 66 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2020-25097

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
5.0
 MEDIUM AV:N/AC:L/Au:N/C:P/I:N/A:N
10.0
2.9
 NIST
8.6
 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
3.9
4.0
 NIST

CWE ids for CVE-2020-25097

  • The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
    Assigned by: nvd@nist.gov (Primary)
  • The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2020-25097

Products affected by CVE-2020-25097

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