Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2021-31807

Severity CVSS v4.0:
Pending analysis
Type:
CWE-190 Integer Overflow or Wraparound
Publication date:
08/06/2021
Last modified:
07/11/2023

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.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 6.50 MEDIUM
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

Base Score 3.x
6.50
Severity 3.x
MEDIUM
Vector 2.0
AV:N/AC:L/Au:S/C:N/I:N/A:P CVSS v2.0 Severity and Metrics:

Base Score: 4.00 MEDIUM
Vector: AV:N/AC:L/Au:S/C:N/I:N/A:P

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): Single
Confidentiality (C): None
Integrity (I): None
Availability (A): Physical

Base Score 2.0
4.00
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:* 3.0 (including) 4.15 (excluding)
cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:* 5.0 (including) 5.0.6 (excluding)
cpe:2.3:a:squid-cache:squid:2.5.stable2:*:*:*:*:*:*:*
cpe:2.3:a:squid-cache:squid:2.5.stable3:*:*:*:*:*:*:*
cpe:2.3:a:squid-cache:squid:2.5.stable4:*:*:*:*:*:*:*
cpe:2.3:a:squid-cache:squid:2.5.stable5:*:*:*:*:*:*:*
cpe:2.3:a:squid-cache:squid:2.5.stable6:*:*:*:*:*:*:*
cpe:2.3:a:squid-cache:squid:2.5.stable7:*:*:*:*:*:*:*
cpe:2.3:a:squid-cache:squid:2.5.stable8:*:*:*:*:*:*:*
cpe:2.3:a:squid-cache:squid:2.5.stable9:*:*:*:*:*:*:*
cpe:2.3:a:squid-cache:squid:2.5.stable10:*:*:*:*:*:*:*
cpe:2.3:a:squid-cache:squid:2.5.stable11:*:*:*:*:*:*:*
cpe:2.3:a:squid-cache:squid:2.5.stable12:*:*:*:*:*:*:*
cpe:2.3:a:squid-cache:squid:2.5.stable13:*:*:*:*:*:*:*
cpe:2.3:a:squid-cache:squid:2.5.stable14:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools