Out-of-bounds Read in Apache Http_server
CVE-2021-36160
A carefully crafted request uri-path can cause mod_proxy_uwsgi to read above the allocated memory and crash (DoS). This issue affects Apache HTTP Server versions 2.4.30 to 2.4.48 (inclusive).
Vulnerability class: Buffer Overflow
EPSS: 0.629 (99.1th 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 (mailing-list, x_refsource_MLIST, Patch)
- security@apache.org (mailing-list, x_refsource_MLIST, Patch)
- security@apache.org (x_refsource_FEDORA, vendor-advisory, Third Party Advisory)
- security@apache.org (mailing-list, x_refsource_MLIST, Patch)
- security@apache.org (mailing-list, x_refsource_MLIST, Patch)
- security@apache.org (mailing-list, x_refsource_MLIST, Patch)
- security@apache.org (mailing-list, x_refsource_MLIST, Patch)
- security@apache.org (x_refsource_FEDORA, vendor-advisory, Third Party Advisory)
- security@apache.org (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-36160?
- CVE-2021-36160 is a high-severity vulnerability in Apache Http_server, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2021-09-16.
- How severe is CVE-2021-36160?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2021-36160 known to be exploited?
- 9 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.