Amazon Linux AMI : php7-pear (ALAS-2021-1466)
high Nessus Plugin ID 145000
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Synopsis
The remote Amazon Linux AMI host is missing a security update.Description
The version of php7-pear installed on the remote host is prior to 1.10.12-4.30. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS-2021-1466 advisory.- Archive_Tar through 1.4.10 allows an unserialization attack because phar: is blocked but PHAR: is not blocked. (CVE-2020-28948)
- Archive_Tar through 1.4.10 has :// filename sanitization only to address phar attacks, and thus any other stream-wrapper attack (such as file:// to overwrite files) can still succeed. (CVE-2020-28949)
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.
Solution
Run 'yum update php7-pear' to update your system.See Also
https://alas.aws.amazon.com/ALAS-2021-1466.html
Plugin Details
Severity: High
ID: 145000
File Name: ala_ALAS-2021-1466.nasl
Version: 1.4
Type: local
Agent: unix
Published: 1/14/2021
Updated: 2/25/2021
Supported Sensors: Frictionless Assessment Agent, Frictionless Assessment AWS, Nessus Agent
Risk Information
VPR
Risk Factor: High
Score: 8.4
CVSS v2
Risk Factor: Medium
Base Score: 6.8
Temporal Score: 5.6
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P
Temporal Vector: E:F/RL:OF/RC:C
CVSS Score Source: CVE-2020-28949
CVSS v3
Risk Factor: High
Base Score: 7.8
Temporal Score: 7.2
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Temporal Vector: E:F/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:amazon:linux:php7-pear, cpe:/o:amazon:linux
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: 1/12/2021
Vulnerability Publication Date: 11/19/2020
Exploitable With
Metasploit (PEAR Archive_Tar 1.4.10 Arbitrary File Write)
Reference Information
CVE: CVE-2020-28948, CVE-2020-28949
ALAS: 2021-1466