Resource exhaustion in Apache HTTP Server
CVE-2018-1333
By specially crafting HTTP/2 requests, workers would be allocated 60 seconds longer than necessary, leading to worker exhaustion and a denial of service. Fixed in Apache HTTP Server 2.4.34 (Affected 2.4.18-2.4.30,2.4.33).
Vulnerability class: DoS (Denial of Service)
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: 0.171 (97.0th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 97.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.169 · newest: 0.171 · change: +0.002
Affected products
- Apache HTTP Server — versions 2.4.33
- Apache Software Foundation HTTP Server — versions Fixed in Apache HTTP Server 2.4.34 (Affected 2.4.18-2.4.30,2.4.33)
- NetApp Cloud Backup
- NetApp Storage Automation Store
- Canonical Ubuntu Linux — versions 18.04
- Red Hat Enterprise Linux — versions 6.0, 7.0
- Red Hat Jboss Core Services — versions 1.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- access.redhat.com/errata/RHSA-2018:3558 (vendor-advisory, Third Party Advisory)
- support.hpe.com/hpsc/doc/public/display (Third Party Advisory)
- access.redhat.com/errata/RHSA-2019:0367 (vendor-advisory, Third Party Advisory)
- security.netapp.com/advisory/ntap-20180926-0007/ (Third Party Advisory)
- httpd.apache.org/security/vulnerabilities_24.html (Vendor Advisory)
- usn.ubuntu.com/3783-1/ (vendor-advisory, Third Party Advisory)
- www.securitytracker.com/id/1041402 (VDB Entry, Third Party Advisory, vdb-entry)
- access.redhat.com/errata/RHSA-2019:0366 (vendor-advisory, Third Party Advisory)
- lists.apache.org/thread.html/56c2e7cc9deb1c12a843d0dc251ea7fd3e7e80293cde02fcd6… (mailing-list)
- lists.apache.org/thread.html/84a3714f0878781f6ed84473d1a503d2cc382277e100450209… (mailing-list)
Frequently asked questions
- What is CVE-2018-1333?
- CVE-2018-1333 is a high-severity vulnerability in Apache HTTP Server, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2018-06-18.
- How severe is CVE-2018-1333?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2018-1333 known to be exploited?
- 19 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.