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Amazon Linux AMI : http-parser (ALAS-2020-1359)
critical Nessus Plugin ID 135935
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Synopsis
The remote Amazon Linux AMI host is missing a security update.Description
The version of http-parser installed on the remote host is prior to 2.9.3-1.2. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS-2020-1359 advisory.A flaw was found in the Node.js code where a specially crafted HTTP(s) request sent to a Node.js server failed to properly process the HTTP(s) headers, resulting in a request smuggling attack. An attacker can use this flaw to alter a request sent as an authenticated user if the Node.js server is deployed behind a proxy server that reuses connections. (CVE-2019-15605)
Node.js: All versions prior to Node.js 6.15.0, 8.14.0, 10.14.0 and 11.3.0: Denial of Service with large HTTP headers: By using a combination of many requests with maximum sized headers (almost 80 KB per connection), and carefully timed completion of the headers, it is possible to cause the HTTP server to abort from heap allocation failure. Attack potential is mitigated by the use of a load balancer or other proxy layer. (CVE-2018-12121)
It was found that the http module from Node.js could accept incorrect Content-Length values, containing spaces within the value, in HTTP headers. A specially crafted client could use this flaw to possibly confuse the script, causing unspecified behavior. (CVE-2018-7159)
Tenable has extracted the preceding description block directly from the tested product security advisory.
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.
Solution
Run 'yum update http-parser' to update your system.See Also
https://access.redhat.com/security/cve/CVE-2018-12121
https://access.redhat.com/security/cve/CVE-2018-7159
Plugin Details
Severity: Critical
ID: 135935
File Name: ala_ALAS-2020-1359.nasl
Version: 1.4
Type: local
Agent: unix
Published: 4/24/2020
Updated: 12/11/2024
Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 6.7
CVSS v2
Risk Factor: High
Base Score: 7.5
Temporal Score: 5.9
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS Score Source: CVE-2019-15605
CVSS v3
Risk Factor: Critical
Base Score: 9.8
Temporal Score: 8.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:amazon:linux:http-parser, cpe:/o:amazon:linux, p-cpe:/a:amazon:linux:http-parser-debuginfo, p-cpe:/a:amazon:linux:http-parser-devel
Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 4/23/2020
Vulnerability Publication Date: 5/17/2018
Reference Information
CVE: CVE-2018-12121, CVE-2018-7159, CVE-2019-15605
ALAS: 2020-1359