Vulnerability Details : CVE-2023-25725

Potential exploit
HAProxy before 2.7.3 may allow a bypass of access control because HTTP/1 headers are inadvertently lost in some situations, aka "request smuggling." The HTTP header parsers in HAProxy may accept empty header field names, which could be used to truncate the list of HTTP headers and thus make some headers disappear after being parsed and processed for HTTP/1.0 and HTTP/1.1. For HTTP/2 and HTTP/3, the impact is limited because the headers disappear before being parsed and processed, as if they had not been sent by the client. The fixed versions are 2.7.3, 2.6.9, 2.5.12, 2.4.22, 2.2.29, and 2.0.31.
Published 2023-02-14 19:15:12
Updated 2025-03-20 20:15:30
Source MITRE
View at NVD,   CVE.org

Products affected by CVE-2023-25725

Threat overview for CVE-2023-25725

Top countries where our scanners detected CVE-2023-25725
Top open port discovered on systems with this issue 9999
IPs affected by CVE-2023-25725 54
Threat actors abusing to this issue? Yes
Find out if you* are affected by CVE-2023-25725!
*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-2023-25725

EPSS FAQ
17.22%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 95 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2023-25725

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
9.1
 CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
3.9
5.2
 134c704f-9b21-4f2e-91b3-4a467353bcc0 2025-03-20
9.1
 CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
3.9
5.2
 NIST

CWE ids for CVE-2023-25725

  • 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: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

References for CVE-2023-25725

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