Debian Security Bug TrackerDEBIANCVE:CVE-2020-11080CVE-2020-11080
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
0.011 Low
EPSS
Percentile
84.5%
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.
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| Debian | 12 | all | nghttp2 | < 1.41.0-1 | nghttp2_1.41.0-1_all.deb |
| Debian | 11 | all | nghttp2 | < 1.41.0-1 | nghttp2_1.41.0-1_all.deb |
| Debian | 10 | all | nghttp2 | < 1.36.0-2+deb10u2 | nghttp2_1.36.0-2+deb10u2_all.deb |
| Debian | 999 | all | nghttp2 | < 1.41.0-1 | nghttp2_1.41.0-1_all.deb |
| Debian | 13 | all | nghttp2 | < 1.41.0-1 | nghttp2_1.41.0-1_all.deb |
| Debian | 12 | all | nodejs | < 10.21.0~dfsg-1 | nodejs_10.21.0~dfsg-1_all.deb |
| Debian | 11 | all | nodejs | < 10.21.0~dfsg-1 | nodejs_10.21.0~dfsg-1_all.deb |
| Debian | 10 | all | nodejs | < 10.21.0~dfsg-1~deb10u1 | nodejs_10.21.0~dfsg-1~deb10u1_all.deb |
| Debian | 999 | all | nodejs | < 10.21.0~dfsg-1 | nodejs_10.21.0~dfsg-1_all.deb |
| Debian | 13 | all | nodejs | < 10.21.0~dfsg-1 | nodejs_10.21.0~dfsg-1_all.deb |
Related
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
0.011 Low
EPSS
Percentile
84.5%