CVE-2018-1283

httpd: Improper handling of headers in mod_session can allow a remote user to modify session data for CGI applications

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Severity

Moderate

Red Hat Product Security

4.8

CVSS 3.0

Review impact separately from score.

Published · March 21, 2018

Updated · September 21, 2026

Description

It has been discovered that the mod_session module of Apache HTTP Server (httpd), through version 2.4.29, has an improper input validation flaw in the way it handles HTTP session headers in some configurations. A remote attacker may influence their content by using a "Session" header.

Statement

This issue did not affect the versions of httpd as shipped with Red Hat Enterprise Linux 5 and 6 as they did not include mod_session module.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.0 · 4.8
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

CWE-20 · Improper Input Validation