CVE-2018-0087 Auth bypass in Cisco Web Security Appliance
Unauthenticated remote attackers can bypass FTP password validation on Cisco WSA if FTP is enabled, allowing unauthorized login with a valid username.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2018-0087?
CVE-2018-0087 is a medium-severity authentication bypass vulnerability in Cisco Asyncos, published on 8 Mar 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in the FTP server of the Cisco Web Security Appliance (WSA) could allow an unauthenticated, remote attacker to log in to the FTP server of the device without a valid password. The attacker does need to have a valid username. The vulnerability is due to incorrect FTP user credential validation. An attacker could exploit this vulnerability by using FTP to connect to the management IP address of the targeted device. A successful exploit could allow the attacker to log in to the FTP server of the Cisco WSA without having a valid password. This vulnerability affects Cisco AsyncOS for WSA Software on both virtual and hardware appliances that are running any release of Cisco AsyncOS 10.5.1 for WSA Software. The device is vulnerable only if FTP is enabled on the management interface. FTP is disabled by default. Cisco Bug IDs: CSCvf74281.
Weakness: CWE-287
Which versions are affected by CVE-2018-0087?
It affects 1 product.
Products include Cisco Asyncos.
How do I fix CVE-2018-0087?
No fix has been published for CVE-2018-0087 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2018-0087 being exploited?
There is no known exploitation of CVE-2018-0087 in the wild and no public exploit code.
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- CVE-2026-76461 Cisco Secure Email Gateway SQL Injection
- CVE-2024-20435 Command injection in Cisco Secure Web Appliance
- CVE-2019-15956 Cisco Web Security Appliance Unauthorized Device Reset Vulnerability
Sources
Also known as GHSA-9p96-pf4v-v529.