NULL pointer dereference in Apache Http_server
CVE-2021-34798
Malformed requests may cause the server to dereference a NULL pointer. This issue affects Apache HTTP Server 2.4.48 and earlier.
EPSS: 0.645 (99.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Apache Http_server
- Apache Software Foundation Http Server — versions Apache HTTP Server 2.4
- Broadcom Brocade_fabric_operating_system_firmware
- Netapp Cloud_backup
- Netapp Clustered_data_ontap
- Netapp Storagegrid
- Oracle Communications_cloud_native_core_network_function_cloud_native_environment — versions 1.10.0
- Oracle Enterprise_manager_base_platform — versions 13.4.0.0, 13.5.0.0
- Oracle Http_server — versions 12.2.1.3.0, 12.2.1.4.0
- Oracle Instantis_enterprisetrack — versions 17.1, 17.2, 17.3
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@apache.org (x_refsource_MISC, Release Notes, Vendor Advisory)
- security@apache.org (x_refsource_FEDORA, vendor-advisory)
- security@apache.org (mailing-list, x_refsource_MLIST)
- security@apache.org (mailing-list, x_refsource_MLIST)
- security@apache.org (mailing-list, x_refsource_MLIST)
- security@apache.org (mailing-list, x_refsource_MLIST)
- security@apache.org (x_refsource_FEDORA, vendor-advisory)
- security@apache.org (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- security@apache.org (vendor-advisory, Third Party Advisory, x_refsource_DEBIAN)
- security@apache.org (x_refsource_CISCO, vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-34798?
- CVE-2021-34798 is a high-severity vulnerability in Apache Http_server, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2021-09-16.
- How severe is CVE-2021-34798?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2021-34798 known to be exploited?
- 17 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.