Use After Free in Apache HTTP Server
CVE-2019-0196
A vulnerability was found in Apache HTTP Server 2.4.17 to 2.4.38. Using fuzzed network input, the http/2 request handling could be made to access freed memory in string comparison when determining the method of a request and thus process the request incorrectly.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.200 (97.4th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 97.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.200 · newest: 0.200 · change: 0.000
Affected products
- Apache HTTP Server
- Apache Software Foundation HTTP Server — versions 2.4.17 to 2.4.38
- Canonical Ubuntu Linux — versions 14.04, 16.04, 18.04
- Debian Linux — versions 9.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- httpd.apache.org/security/vulnerabilities_24.html (Vendor Advisory)
- www.openwall.com/lists/oss-security/2019/04/02/1 (mailing-list, Mailing List, Third Party Advisory, Mitigation)
- www.securityfocus.com/bid/107669 (VDB Entry, Third Party Advisory, vdb-entry)
- seclists.org/bugtraq/2019/Apr/5 (mailing-list, Mailing List, Third Party Advisory)
- usn.ubuntu.com/3937-1/ (vendor-advisory, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- www.debian.org/security/2019/dsa-4422 (vendor-advisory, Third Party Advisory)
- www.apache.org/dist/httpd/CHANGES_2.4.39 (Release Notes, Vendor Advisory)
- lists.opensuse.org/opensuse-security-announce/2019-04/msg00051.html (vendor-advisory, Patch, Mailing List, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2019-04/msg00061.html (vendor-advisory, Patch, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-0196?
- CVE-2019-0196 is a medium-severity vulnerability in Apache HTTP Server, classified under Use After Free. CVSS score: 5.3/10. Published 2019-06-11.
- How severe is CVE-2019-0196?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2019-0196 known to be exploited?
- 22 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.