NULL Pointer Dereference Affecting apache2 package, versions <2.4.52-r0


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
20.48% (97th percentile)

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  • Snyk IDSNYK-ALPINE313-APACHE2-2322101
  • published21 Dec 2021
  • disclosed20 Dec 2021

Introduced: 20 Dec 2021

CVE-2021-44224  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade Alpine:3.13 apache2 to version 2.4.52-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream apache2 package and not the apache2 package as distributed by Alpine. See How to fix? for Alpine:3.13 relevant fixed versions and status.

A crafted URI sent to httpd configured as a forward proxy (ProxyRequests on) can cause a crash (NULL pointer dereference) or, for configurations mixing forward and reverse proxy declarations, can allow for requests to be directed to a declared Unix Domain Socket endpoint (Server Side Request Forgery). This issue affects Apache HTTP Server 2.4.7 up to 2.4.51 (included).

References

CVSS Scores

version 3.1