Resource exhaustion in Apache Traffic_server
CVE-2019-9516
Some HTTP/2 implementations are vulnerable to a header leak, potentially leading to a denial of service. The attacker sends a stream of headers with a 0-length header name and 0-length header value, optionally Huffman encoded into 1-byte o…
Vulnerability class: DoS (Denial of Service)
EPSS: 0.563 (99.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cret@cert.org (US Government Resource, x_refsource_CERT-VN, Third Party Advisory, third-party-advisory)
- cret@cert.org (Third Party Advisory, x_refsource_MISC)
- cret@cert.org (mailing-list, x_refsource_BUGTRAQ, Mailing List, Third Party Advisory)
- cret@cert.org (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)
- cret@cert.org (mailing-list, x_refsource_FULLDISC, Mailing List, Third Party Advisory)
- cret@cert.org (x_refsource_CONFIRM, Third Party Advisory)
- cret@cert.org (x_refsource_CONFIRM, Third Party Advisory)
- cret@cert.org (x_refsource_FEDORA, vendor-advisory)
- cret@cert.org (mailing-list, x_refsource_BUGTRAQ, Mailing List, Third Party Advisory)
- cret@cert.org (vendor-advisory, Third Party Advisory, x_refsource_DEBIAN)
Frequently asked questions
- What is CVE-2019-9516?
- CVE-2019-9516 is a medium-severity vulnerability in Apache Traffic_server, classified under Uncontrolled Resource Consumption. CVSS score: 6.5/10. Published 2019-08-13.
- How severe is CVE-2019-9516?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2019-9516 known to be exploited?
- 8 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.