Detections
Analytics
Amazon Linux AMI : python-ecdsa (ALAS-2023-1800)
critical Nessus Plugin ID 179799
Language:
Synopsis
The remote Amazon Linux AMI host is missing a security update.Description
It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS-2023-1800 advisory.- An error-handling flaw was found in python-ecdsa before version 0.13.3. During signature decoding, malformed DER signatures could raise unexpected exceptions (or no exceptions at all), which could lead to a denial of service. (CVE-2019-14853)
- A flaw was found in all python-ecdsa versions before 0.13.3, where it did not correctly verify whether signatures used DER encoding. Without this verification, a malformed signature could be accepted, making the signature malleable. Without proper verification, an attacker could use a malleable signature to create false transactions. (CVE-2019-14859)
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 python-ecdsa' to update your system.See Also
https://alas.aws.amazon.com/ALAS-2023-1800.html
https://alas.aws.amazon.com/cve/html/CVE-2019-14853.html
Plugin Details
Severity: Critical
ID: 179799
File Name: ala_ALAS-2023-1800.nasl
Version: 1.1
Type: local
Agent: unix
Published: 8/14/2023
Updated: 8/15/2023
Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 6.0
CVSS v2
Risk Factor: Medium
Base Score: 6.4
Temporal Score: 5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N
CVSS Score Source: CVE-2019-14859
CVSS v3
Risk Factor: Critical
Base Score: 9.1
Temporal Score: 8.2
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:amazon:linux:python26-ecdsa, p-cpe:/a:amazon:linux:python27-ecdsa, 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: 8/3/2023
Vulnerability Publication Date: 10/8/2019
Reference Information
CVE: CVE-2019-14853, CVE-2019-14859