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CVE-2024-47252

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Date: July 10, 2025

Insufficient escaping of user-supplied data in mod_ssl in Apache HTTP Server 2.4.63 and earlier allows an untrusted SSL/TLS client to insert escape characters into log files in some configurations. In a logging configuration where CustomLog is used with "%{varname}x" or "%{varname}c" to log variables provided by mod_ssl such as SSL_TLS_SNI, no escaping is performed by either mod_log_config or mod_ssl and unsanitized data provided by the client may appear in log files.

Severity Score

Related Resources (5)

https://security-tracker.debian.org/tracker/CVE-2024-47252
https://security.alpinelinux.org/vuln/CVE-2024-47252
https://nvd.nist.gov/vuln/detail/CVE-2024-47252
https://httpd.apache.org/security/vulnerabilities_24.html
https://www.mend.io/vulnerability-database/CVE-2024-47252

Severity Score

Weakness Type (CWE)

Improper Neutralization of Escape, Meta, or Control Sequences

CWE-150

Top Fix

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Upgrade Version

Upgrade to version https://github.com/apache/httpd.git - 2.4.64

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): NONE
Availability (A): NONE

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