Vulnerability in Apple macOS
CVE-2024-20337
A vulnerability in the SAML authentication process of Cisco Secure Client could allow an unauthenticated, remote attacker to conduct a carriage return line feed (CRLF) injection attack against a user. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by persuading a user to click a crafted link while establishing a VPN session. A successful exploit could allow the attacker to execute arbitrary script code in the browser or access sensitive, browser-based information, including a valid SAML token. The attacker could then use the token to establish a remote access VPN session with the privileges of the affected user. Individual hosts and services behind the VPN headend would still need additional credentials for successful access.
Vulnerability class: CRLF Injection
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N.
EPSS exploit prediction
EPSS: 0.299 (98.2th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 98.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.299 · newest: 0.299 · change: 0.000
Affected products
- Apple macOS
- Cisco Secure Client — versions 4.9.00086, 4.9.01095, 4.9.02028
- Cisco Secure Client
- Linux Kernel
- Microsoft Windows
Weakness classification (CWE)
Public proof-of-concept exploits
References
Frequently asked questions
- What is CVE-2024-20337?
- CVE-2024-20337 is a high-severity vulnerability in Apple macOS, classified under CRLF Injection. CVSS score: 8.2/10. Published 2024-03-06.
- How severe is CVE-2024-20337?
- High severity. CVSS v3 base score is 8.2 out of 10.
- Is CVE-2024-20337 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.