Resource exhaustion in N/a
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: 0.575 (99.0th 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
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- VU#605641 (third-party-advisory, x_refsource_CERT-VN)
- github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-0… (x_refsource_MISC)
- 20190814 APPLE-SA-2019-08-13-5 SwiftNIO HTTP/2 1.5.0 (mailing-list, x_refsource_BUGTRAQ)
- USN-4099-1 (vendor-advisory, x_refsource_UBUNTU)
- 20190816 APPLE-SA-2019-08-13-5 SwiftNIO HTTP/2 1.5.0 (mailing-list, x_refsource_FULLDISC)
- www.synology.com/security/advisory/Synology_SA_19_33 (x_refsource_CONFIRM)
- support.f5.com/csp/article/K02591030 (x_refsource_CONFIRM)
- FEDORA-2019-befd924cfe (vendor-advisory, x_refsource_FEDORA)
- 20190822 [SECURITY] [DSA 4505-1] nginx security update (mailing-list, x_refsource_BUGTRAQ)
- DSA-4505 (vendor-advisory, x_refsource_DEBIAN)
Frequently asked questions
- What is CVE-2019-9516?
- CVE-2019-9516 is a high-severity vulnerability in N/a, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2019-08-13.
- How severe is CVE-2019-9516?
- High severity. CVSS v3 base score is 7.5 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.