Detections
Analytics
Amazon Linux 2 : squid (ALAS-2023-1950)
medium Nessus Plugin ID 171805
Language:
Synopsis
The remote Amazon Linux 2 host is missing a security update.Description
The version of squid installed on the remote host is prior to 3.5.20-17. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2023-1950 advisory.An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to a buffer-management bug, it allows a denial of service. When resolving a request with the urn: scheme, the parser leaks a small amount of memory. However, there is an unspecified attack methodology that can easily trigger a large amount of memory consumption. (CVE-2021-28651)
An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to incorrect parser validation, it allows a Denial of Service attack against the Cache Manager API. This allows a trusted client to trigger memory leaks that. over time, lead to a Denial of Service via an unspecified short query string. This attack is limited to clients with Cache Manager API access privilege. (CVE-2021-28652)
An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to a memory-management bug, it is vulnerable to a Denial of Service attack (against all clients using the proxy) via HTTP Range request processing. (CVE-2021-31806)
An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. An integer overflow problem allows a remote server to achieve Denial of Service when delivering responses to HTTP Range requests. The issue trigger is a header that can be expected to exist in HTTP traffic without any malicious intent.
(CVE-2021-31807)
An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to an input-validation bug, it is vulnerable to a Denial of Service attack (against all clients using the proxy). A client sends an HTTP Range request to trigger this. (CVE-2021-31808)
Squid before 4.15 and 5.x before 5.0.6 allows remote servers to cause a denial of service (affecting availability to all clients) via an HTTP response. The issue trigger is a header that can be expected to exist in HTTP traffic without any malicious intent by the server. (CVE-2021-33620)
A flaw was found in squid. A trusted client can directly access the cache manager information, bypassing the manager ACL protection and resulting in information disclosure. (CVE-2022-41317)
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 squid' to update your system.See Also
https://alas.aws.amazon.com/AL2/ALAS-2023-1950.html
https://alas.aws.amazon.com/cve/html/CVE-2021-28651.html
https://alas.aws.amazon.com/cve/html/CVE-2021-28652.html
https://alas.aws.amazon.com/cve/html/CVE-2021-31806.html
https://alas.aws.amazon.com/cve/html/CVE-2021-31807.html
https://alas.aws.amazon.com/cve/html/CVE-2021-31808.html
https://alas.aws.amazon.com/cve/html/CVE-2021-33620.html
Plugin Details
Severity: Medium
ID: 171805
File Name: al2_ALAS-2023-1950.nasl
Version: 1.2
Type: local
Agent: unix
Published: 2/22/2023
Updated: 12/11/2024
Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 4.4
CVSS v2
Risk Factor: Medium
Base Score: 5
Temporal Score: 3.9
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P
CVSS Score Source: CVE-2021-28651
CVSS v3
Risk Factor: Medium
Base Score: 6.5
Temporal Score: 5.9
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
CVSS Score Source: CVE-2022-41317
Vulnerability Information
CPE: p-cpe:/a:amazon:linux:squid-sysvinit, p-cpe:/a:amazon:linux:squid-migration-script, p-cpe:/a:amazon:linux:squid-debuginfo, cpe:/o:amazon:linux:2, p-cpe:/a:amazon:linux:squid
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: 2/17/2023
Vulnerability Publication Date: 5/27/2021
Reference Information
CVE: CVE-2021-28651, CVE-2021-28652, CVE-2021-31806, CVE-2021-31807, CVE-2021-31808, CVE-2021-33620, CVE-2022-41317