CVE-2020-110803.7LowCWE-707

CVE-2020-11080: Denial of service in nghttp2

nghttp2

Fixed in 1.41.0 · Affected: nghttp2 before 1.41.0 · Exploitation: possible (1 to 10%)

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

5.3%probability of exploitation in the next 30 days

92nd percentile

050100

Higher than 92% of scored CVEs

3.7LowCVSS 3.1

LowMediumHighCrit.

DescriptionCVE.org

In nghttp2 before version 1.41.0, the overly large HTTP/2 SETTINGS frame payload causes denial of service. The proof of concept attack involves a malicious client constructing a SETTINGS frame with a length of 14,400 bytes (2400 individual settings entries) over and over again. The attack causes the CPU to spike at 100%. nghttp2 v1.41.0 fixes this vulnerability. There is a workaround to this vulnerability. Implement nghttp2_on_frame_recv_callback callback, and if received frame is SETTINGS frame and the number of settings entries are large (e.g., > 32), then drop the connection.

Affected products1

From the CVE record. A product or version that is not listed is unknown, not unaffected.

nghttp2 · nghttp2< 1.41.0

On the Atlas

Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.

Open the Atlas

Exploitation: Possible (1 to 10%). EPSS between 1% and 10%.
CISA KEV: Not listed
Public check: No public nuclei template
Weakness: Improper Neutralization · Input Validation and Logic
Vendor: nghttp2
Published: June 2020
Band: Possible (1 to 10%), June 2020

CoverageNo articles yet

No CyberSIXT article names CVE-2020-11080 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.

References

2 more references are in the CVE record.