Attacker Value
Unknown
0
CVE-2021-33620
0
CVE ID
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CVE-2021-33620
(Last updated October 12, 2023) ▾
MITRE ATT&CK
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Collection
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Command and Control
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Credential Access
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Defense Evasion
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Discovery
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Execution
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Exfiltration
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Impact
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Initial Access
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Lateral Movement
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Persistence
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Privilege Escalation
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Topic Tags
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Description
Squid before 4.15 and 5.x before 5.0.6 allows remote servers to cause a denial of service (affecting availability to all clients) via an HTTP response. The issue trigger is a header that can be expected to exist in HTTP traffic without any malicious intent by the server.
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CVSS V3 Severity and Metrics
Data provided by the National Vulnerability Database (NVD)
Base Score:
6.5 Medium
Impact Score:
3.6
Exploitability Score:
2.8
Attack Vector (AV):
Network
Attack Complexity (AC):
Low
Privileges Required (PR):
Low
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
None
Integrity (I):
None
Availability (A):
High
General Information
Offensive Application
Unknown
Utility Class
Unknown
Ports
Unknown
OS
Unknown
Vulnerable Versions
n/a
Prerequisites
Unknown
Discovered By
Unknown
PoC Author
Unknown
Metasploit Module
Unknown
Reporter
Unknown
Vendors
- debian,
- fedoraproject,
- squid-cache
Products
- debian linux 9.0,
- fedora 33,
- fedora 34,
- squid
References
Advisory
Additional Info
Authenticated
Unknown
Exploitable
Unknown
Reliability
Unknown
Stability
Unknown
Available Mitigations
Unknown
Shelf Life
Unknown
Userbase/Installbase
Unknown
Patch Effectiveness
Unknown
Rapid7
Technical Analysis
Report as Emergent Threat Response
Report as Exploited in the Wild
CVE ID
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