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Debian LTS: Security Advisory for nghttp2 (DLA-2786-1)

Information

Severity

Severity

Medium

Family

Family

Debian Local Security Checks

CVSSv2 Base

CVSSv2 Base

5.0

CVSSv2 Vector

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

Solution Type

Solution Type

Vendor Patch

Created

Created

2 years ago

Modified

Modified

2 years ago

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.

Common Vulnerabilities and Exposures (CVE)