vulnerability
Apache HTTPD: Apache HTTP Server: mod_ssl error log variable escaping (CVE-2024-47252)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 8 | (AV:N/AC:L/Au:N/C:C/I:N/A:N) | Jul 10, 2025 | Jul 18, 2025 | Nov 6, 2025 |
Severity
8
CVSS
(AV:N/AC:L/Au:N/C:C/I:N/A:N)
Published
Jul 10, 2025
Added
Jul 18, 2025
Modified
Nov 6, 2025
Description
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.
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.
Solution
apache-httpd-upgrade-latest
References
- URL-http://www.openwall.com/lists/oss-security/2025/07/10/2
- URL-http://www.openwall.com/lists/oss-security/2025/07/10/6
- URL-https://httpd.apache.org/security/vulnerabilities_24.html
- URL-https://lists.debian.org/debian-lts-announce/2025/08/msg00009.html
- CVE-2024-47252
- https://attackerkb.com/topics/CVE-2024-47252
- CWE-150
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