CVE-2023-36673
Avira Phantom VPN Plaintext Traffic Exfiltration vuln
Description
An issue was discovered in Avira Phantom VPN through 2.23.1 for macOS. The VPN client insecurely configures the operating system such that all IP traffic to the VPN server's IP address is sent in plaintext outside the VPN tunnel, even if this traffic is not generated by the VPN client, while simultaneously using plaintext DNS to look up the VPN server's IP address. This allows an adversary to trick the victim into sending traffic to arbitrary IP addresses in plaintext outside the VPN tunnel. NOTE: the tunnelcrack.mathyvanhoef.com website uses this CVE ID to refer more generally to "ServerIP attack, combined with DNS spoofing, that can leak traffic to an arbitrary IP address" rather than to only Avira Phantom VPN.
INFO
Published Date :
Aug. 9, 2023, 11:15 p.m.
Last Modified :
Oct. 31, 2023, 9:15 a.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.2
Exploitability Score :
2.1
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2023-36673.
| URL | Resource |
|---|---|
| https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2023-0015 | |
| https://tunnelcrack.mathyvanhoef.com/details.html | Exploit Third Party Advisory |
| https://www.avira.com/en/free-vpn | Product |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2023-36673 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2023-36673 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Oct. 31, 2023
Action Type Old Value New Value Added Reference https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2023-0015 [No Types Assigned] -
Initial Analysis by [email protected]
Aug. 17, 2023
Action Type Old Value New Value Added CVSS V3.1 NIST AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N Changed Reference Type https://tunnelcrack.mathyvanhoef.com/details.html No Types Assigned https://tunnelcrack.mathyvanhoef.com/details.html Exploit, Third Party Advisory Changed Reference Type https://www.avira.com/en/free-vpn No Types Assigned https://www.avira.com/en/free-vpn Product Added CWE NIST CWE-319 Added CPE Configuration OR *cpe:2.3:a:avira:phantom_vpn:*:*:*:*:*:macos:*:* versions up to (including) 2.23.1
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-36673 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2023-36673
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.06 }} 0.01%
score
0.26248
percentile