NULL pointer dereference in Apache Http_server
CVE-2018-8011
By specially crafting HTTP requests, the mod_md challenge handler would dereference a NULL pointer and cause the child process to segfault. This could be used to DoS the server. Fixed in Apache HTTP Server 2.4.34 (Affected 2.4.33).
EPSS: 0.517 (98.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Apache Http_server — versions 2.4.33
- Apache Software Foundation Http Server — versions Fixed in Apache HTTP Server 2.4.34 (Affected 2.4.33)
- Netapp Cloud_backup
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@apache.org (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_SECTRACK)
- security@apache.org (x_refsource_CONFIRM, Third Party Advisory)
- security@apache.org (x_refsource_CONFIRM, 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 (mailing-list, x_refsource_MLIST)
- security@apache.org (mailing-list, x_refsource_MLIST)
- security@apache.org (mailing-list, x_refsource_MLIST)
Frequently asked questions
- What is CVE-2018-8011?
- CVE-2018-8011 is a high-severity vulnerability in Apache Http_server, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2018-07-18.
- How severe is CVE-2018-8011?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2018-8011 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.