CVE-2021-41524

null pointer dereference in h2 fuzzing

Description

While fuzzing the 2.4.49 httpd, a new null pointer dereference was detected during HTTP/2 request processing, allowing an external source to DoS the server. This requires a specially crafted request. The vulnerability was recently introduced in version 2.4.49. No exploit is known to the project.

Scores

Weaknesses (CWE)

• CWE-476

European references

• ENISA EUVD · EUVD-2021-28543
• GCVE · GCVE-0-2021-41524

CERT-FR advisories

• CERTFR-2024-AVI-0575 — Multiples vulnérabilités dans les produits Juniper Networks · cert.ssi.gouv.fr
• CERTFR-2021-AVI-759 — Multiples vulnérabilités dans Apache HTTP Server · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

• cpe:2.3:a:apache:http_server:2.4.49:*:*:*:*:*:*:*
• cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
• cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
• cpe:2.3:a:oracle:instantis_enterprisetrack:17.1:*:*:*:*:*:*:*
• cpe:2.3:a:oracle:instantis_enterprisetrack:17.2:*:*:*:*:*:*:*
• cpe:2.3:a:oracle:instantis_enterprisetrack:17.3:*:*:*:*:*:*:*
• cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*

Affected products

References

• https://httpd.apache.org/security/vulnerabilities_24.html
• http://www.openwall.com/lists/oss-security/2021/10/05/1
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DSM6UWQICBJ2TU727RENU3HBKEAFLT6T/
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-httpd-pathtrv-LAzg68cZ
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EUVJVRJRBW5QVX4OY3NOHZDQ3B3YOTSG/
• https://www.oracle.com/security-alerts/cpujan2022.html
• https://security.netapp.com/advisory/ntap-20211029-0009/
• https://security.gentoo.org/glsa/202208-20

Sources