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Debian LTS: Security Advisory for nghttp2 (DLA-2786-1)
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
The remote host is missing an update for the 'nghttp2' package(s) announced via the DLA-2786-1 advisory.
Insight
Insight
Two security issue have been discovered in nghttp2: server, proxy and client implementing HTTP/2. CVE-2018-1000168 An Improper Input Validation CWE-20 vulnerability found in ALTSVC frame handling that can result in segmentation fault leading to denial of service. This attack appears to be exploitable via network client. CVE-2020-11080 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%.
Affected Software
Affected Software
'nghttp2' package(s) on Debian Linux.
Detection Method
Detection Method
Checks if a vulnerable package version is present on the target host.
Solution
Solution
For Debian 9 stretch, these problems have been fixed in version 1.18.1-1+deb9u2. We recommend that you upgrade your nghttp2 packages.