CVE-2021-39275
ap_escape_quotes buffer overflow
9.8
CRITICAL
CVSS 3.1
EPSS 37.7%
Description
ap_escape_quotes() may write beyond the end of a buffer when given malicious input. No included modules pass untrusted data to these functions, but third-party / external modules may. This issue affects Apache HTTP Server 2.4.48 and earlier.
How to fix CVE-2021-39275
To remediate CVE-2021-39275, upgrade the affected package to a fixed version below.
- Alpine/apache2—upgrade to 2.4.49-r0 or later
- —upgrade to 2.4.49 or later
- —upgrade to 2.4.51-1~deb11u1 or later
Is CVE-2021-39275 being exploited?
Moderate — EPSS is 37.7%. Track this CVE but it's not at the top of the prioritisation list.
Affected packages (3)
- from 0, < 2.4.49-r0
- from 0, < 2.4.49
- from 0, < 2.4.51-1~deb11u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |