CVE Database›Document archive›CVE-2021-39275

CVE-2021-39275

httpd: Out-of-bounds write in ap_escape_quotes() via malicious input

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Severity

Moderate

Red Hat Product Security

8.1

CVSS 3.1

Review impact separately from score.

Published · September 16, 2021

Updated · October 9, 2026

Description

An out-of-bounds write in function ap_escape_quotes of httpd allows an unauthenticated remote attacker to crash the server or potentially execute code on the system with the privileges of the httpd user, by providing malicious input to the function.

Statement

No httpd module in Red Hat Enterprise Linux and Red Hat Software Collections pass untrusted data to ap_escape_quotes function, thus the Impact of the flaw has been set to Moderate.

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

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

CVSS / CWE

CVSS 3.1 · 8.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE-787 · Out-of-bounds Write