CVE-2017-3807
A vulnerability in Common Internet Filesystem (CIFS) code in the Clientless SSL VPN functionality of Cisco ASA Software, Major Releases 9.0-9.6, could allow an authenticated, remote attacker to cause a heap overflow.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 14.8%, higher than 96% of all known CVEs. Patch or mitigate before the next change window.
Description
A vulnerability in Common Internet Filesystem (CIFS) code in the Clientless SSL VPN functionality of Cisco ASA Software, Major Releases 9.0-9.6, could allow an authenticated, remote attacker to cause a heap overflow. The vulnerability is due to insufficient validation of user supplied input. An attacker could exploit this vulnerability by sending a crafted URL to the affected system. An exploit could allow the remote attacker to cause a reload of the affected system or potentially execute code. Note: Only traffic directed to the affected system can be used to exploit this vulnerability. This vulnerability affects systems configured in routed firewall mode only and in single or multiple context mode. This vulnerability can be triggered by IPv4 or IPv6 traffic. A valid TCP connection is needed to perform the attack. The attacker needs to have valid credentials to log in to the Clientless SSL VPN portal. Vulnerable Cisco ASA Software running on the following products may be affected by this vulnerability: Cisco ASA 5500 Series Adaptive Security Appliances, Cisco ASA 5500-X Series Next-Generation Firewalls, Cisco Adaptive Security Virtual Appliance (ASAv), Cisco ASA for Firepower 9300 Series, Cisco ASA for Firepower 4100 Series. Cisco Bug IDs: CSCvc23838.
- CVSS 3.0
- 8.8 HIGHCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 14.76% probability · 96th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-119
- Affected
- cisco/adaptive security appliance software
- Source
- psirt@cisco.com
References
- http://www.securityfocus.com/bid/96161
- http://www.securitytracker.com/id/1037797
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170208-asaMitigation, Vendor Advisory
- https://www.exploit-db.com/exploits/41369/
- http://www.securityfocus.com/bid/96161
- http://www.securitytracker.com/id/1037797
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170208-asaMitigation, Vendor Advisory
- https://www.exploit-db.com/exploits/41369/
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.