Risk | Medium |
Patch available | NO |
Number of vulnerabilities | 1 |
CVE-ID | N/A |
CWE-ID | CWE-416 |
Exploitation vector | Network |
Public exploit | N/A |
Vulnerable software Subscribe |
Squid Server applications / IDS/IPS systems, Firewalls and proxy servers |
Vendor | Squid-cache.org |
Security Bulletin
This security bulletin contains information about 1 vulnerabilities.
Updated: 04.10.2021
Vulnerability CVE-2021-28116 moved to bulletin: SB2021100402
EUVDB-ID: #VU50456
Risk: Medium
CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L/E:U/RL:U/RC:C]
CVE-ID: N/A
CWE-ID:
CWE-416 - Use After Free
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error within the handling of the WCCP protocol. A remote attacker can pass specially crafted data to the proxy server and execute arbitrary code on the system.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
MitigationCybersecurity Help is currently unaware of any official solution to address this vulnerability.
Vulnerable software versionsSquid: 4.0 - 5.0.4
External linkshttp://www.zerodayinitiative.com/advisories/ZDI-21-156/
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.