NULL pointer dereference in Apache HTTP Server
CVE-2020-13950
Apache HTTP Server versions 2.4.41 to 2.4.46 mod_proxy_http can be made to crash (NULL pointer dereference) with specially crafted requests using both Content-Length and Transfer-Encoding headers, leading to a Denial of Service
EPSS: 0.491 (98.8th 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 2.4.46, 2.4.43, 2.4.41
- Oracle Enterprise_manager_ops_center — versions 12.4.0.0
- Oracle Instantis_enterprisetrack — versions 17.1, 17.2, 17.3
- Oracle Zfs_storage_appliance_kit — versions 8.8
- Debian Debian_linux — versions 9.0, 10.0
- Fedoraproject Fedora — versions 34, 35
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@apache.org (x_refsource_MISC, Vendor Advisory)
- security@apache.org (Mailing List, x_refsource_MISC, Release Notes)
- security@apache.org (mailing-list, x_refsource_MLIST)
- security@apache.org (mailing-list, x_refsource_MLIST)
- security@apache.org (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- security@apache.org (vendor-advisory, Third Party Advisory, x_refsource_GENTOO)
- security@apache.org (x_refsource_FEDORA, vendor-advisory)
- security@apache.org (x_refsource_FEDORA, vendor-advisory)
- security@apache.org (Third Party Advisory, x_refsource_MISC)
- security@apache.org (x_refsource_CONFIRM, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-13950?
- CVE-2020-13950 is a high-severity vulnerability in Apache HTTP Server, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2021-06-10.
- How severe is CVE-2020-13950?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2020-13950 known to be exploited?
- 12 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.