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).
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.556 (99.0th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 99th percentile — 99.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.560 · newest: 0.556 · change: -0.004
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
- www.securitytracker.com/id/1041401 (VDB Entry, Third Party Advisory, vdb-entry)
- security.netapp.com/advisory/ntap-20180926-0007/ (Third Party Advisory)
- httpd.apache.org/security/vulnerabilities_24.html (Vendor Advisory)
- lists.apache.org/thread.html/56c2e7cc9deb1c12a843d0dc251ea7fd3e7e80293cde02fcd6… (mailing-list)
- lists.apache.org/thread.html/84a3714f0878781f6ed84473d1a503d2cc382277e100450209… (mailing-list)
- lists.apache.org/thread.html/rd18c3c43602e66f9cdcf09f1de233804975b9572b0456cc58… (mailing-list)
- lists.apache.org/thread.html/re3d27b6250aa8548b8845d314bb8a350b3df326cacbbfdfe4… (mailing-list)
- lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af… (mailing-list)
- lists.apache.org/thread.html/r06f0d87ebb6d59ed8379633f36f72f5b1f79cadfda72ede08… (mailing-list)
- lists.apache.org/thread.html/rc998b18880df98bafaade071346690c2bc1444adaa1a1ea46… (mailing-list)
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.