Vulnerability identifier: #VU24668
Vulnerability risk: Medium
CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-20
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Cisco AsyncOS for Cisco Email Security Appliance
Server applications /
IDS/IPS systems, Firewalls and proxy servers
Vendor: Cisco Systems, Inc
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper validation of zip files in the zip decompression engine. A remote attacker can send an email message with a crafted zip-compressed attachment and trigger a restart of the content-scanning process, causing a temporary denial of service condition.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Cisco AsyncOS for Cisco Email Security Appliance: 7.6.3 - 12.5.1
External links
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-esa-dos-87mBkc8n
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.