vulnerability
Apache HTTPD: NULL pointer dereference in httpd core (CVE-2021-34798)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:N/AC:L/Au:N/C:N/I:N/A:P) | Sep 16, 2021 | Dec 22, 2021 | Jul 2, 2025 |
Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
Sep 16, 2021
Added
Dec 22, 2021
Modified
Jul 2, 2025
Description
Malformed requests may cause the server to dereference a NULL pointer. This issue affects Apache HTTP Server 2.4.48 and earlier.
Solution
apache-httpd-upgrade-latest
References
- URL-http://httpd.apache.org/security/vulnerabilities_24.html
- URL-https://cert-portal.siemens.com/productcert/pdf/ssa-685781.pdf
- URL-https://kc.mcafee.com/corporate/index?page=content&id=SB10379
- URL-https://lists.apache.org/thread.html/r3925e167d5eb1c75def3750c155d753064e1d34a143028bb32910432%40%3Cusers.httpd.apache.org%3E
- URL-https://lists.apache.org/thread.html/r61fdbfc26ab170f4e6492ef3bd5197c20b862ce156e9d5a54d4b899c%40%3Cusers.httpd.apache.org%3E
- URL-https://lists.apache.org/thread.html/r82838efc5fa6fc4c73986399c9b71573589f78b31846aff5bd9b1697%40%3Cusers.httpd.apache.org%3E
- URL-https://lists.apache.org/thread.html/r82c077663f9759c7df5a6656f925b3ee4f55fcd33c889ba7cd687029%40%3Cusers.httpd.apache.org%3E
- URL-https://lists.debian.org/debian-lts-announce/2021/10/msg00001.html
- URL-https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SPBR6WUYBJNACHKE65SPL7TJOHX7RHWD/
- URL-https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZNCYSR3BXT36FFF4XTCPL3HDQK4VP45R/
- URL-https://security.gentoo.org/glsa/202208-20
- URL-https://security.netapp.com/advisory/ntap-20211008-0004/
- URL-https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-httpd-2.4.49-VWL69sWQ
- URL-https://www.debian.org/security/2021/dsa-4982
- URL-https://www.oracle.com/security-alerts/cpuapr2022.html
- URL-https://www.oracle.com/security-alerts/cpujan2022.html
- URL-https://www.tenable.com/security/tns-2021-17
- CVE-2021-34798
- https://attackerkb.com/topics/CVE-2021-34798
- CWE-476
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