Attacker Value
Unknown
(0 users assessed)
Exploitability
Unknown
(0 users assessed)
User Interaction
None
Privileges Required
Low
Attack Vector
Network
0

CVE-2021-31807

Disclosure Date: June 08, 2021 •
CVE-2021-31807 CVSS v3 Base Score: 6.5
Add MITRE ATT&CK tactics and techniques that apply to this CVE.

Description

An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. An integer overflow problem allows a remote server to achieve Denial of Service when delivering responses to HTTP Range requests. The issue trigger is a header that can be expected to exist in HTTP traffic without any malicious intent.

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CVSS V3 Severity and Metrics
Base Score:
6.5 Medium
Impact Score:
3.6
Exploitability Score:
2.8
Vector:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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

  • fedoraproject,
  • netapp,
  • squid-cache

Products

  • cloud manager -,
  • fedora 33,
  • fedora 34,
  • squid,
  • squid 2.5.stable10,
  • squid 2.5.stable11,
  • squid 2.5.stable12,
  • squid 2.5.stable13,
  • squid 2.5.stable14,
  • squid 2.5.stable2,
  • squid 2.5.stable3,
  • squid 2.5.stable4,
  • squid 2.5.stable5,
  • squid 2.5.stable6,
  • squid 2.5.stable7,
  • squid 2.5.stable8,
  • squid 2.5.stable9,
  • squid 2.6,
  • squid 2.7
Technical Analysis