Debian DLA-3638-1 : h2o - LTS security update

high Nessus Plugin ID 184084

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Synopsis

The remote Debian host is missing a security-related update.

Description

The remote Debian 10 host has packages installed that are affected by a vulnerability as referenced in the dla-3638 advisory.

- The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023. (CVE-2023-44487)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade the h2o packages.

For Debian 10 buster, this problem has been fixed in version 2.2.5+dfsg2-2+deb10u2.

Plugin Details

Severity: High

ID: 184084

File Name: debian_DLA-3638.nasl

Version: 1.1

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 10/31/2023

Updated: 2/9/2024

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2023-44487

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:F/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:libh2o-dev, p-cpe:/a:debian:debian_linux:libh2o-dev-common, p-cpe:/a:debian:debian_linux:libh2o-evloop-dev, p-cpe:/a:debian:debian_linux:libh2o0.13, cpe:/o:debian:debian_linux:10.0, p-cpe:/a:debian:debian_linux:h2o, p-cpe:/a:debian:debian_linux:h2o-doc, p-cpe:/a:debian:debian_linux:libh2o-evloop0.13

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/31/2023

Vulnerability Publication Date: 10/10/2023

CISA Known Exploited Vulnerability Due Dates: 10/31/2023

Reference Information

CVE: CVE-2023-44487

Detections

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