Vulnerability Name:

CVE-2021-28116 (CCN-196505)

Assigned:2021-02-09
Published:2021-02-09
Updated:2023-02-03
Summary:Squid through 4.14 and 5.x through 5.0.5, in some configurations, allows information disclosure because of an out-of-bounds read in WCCP protocol data. This can be leveraged as part of a chain for remote code execution as nobody.
CVSS v3 Severity:3.7 Low (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N)
3.3 Low (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:U/RC:R)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): Low
Integrity (I): None
Availibility (A): None
3.7 Low (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N)
3.3 Low (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:U/RC:R)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): Low
Integrity (I): None
Availibility (A): None
5.3 Medium (REDHAT CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)
4.7 Medium (REDHAT Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:U/RC:R)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): Low
Integrity (I): None
Availibility (A): None
CVSS v2 Severity:4.3 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:P/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): None
Availibility (A): None
2.6 Low (CCN CVSS v2 Vector: AV:N/AC:H/Au:N/C:P/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): High
Athentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): None
Availibility (A): None
Vulnerability Type:CWE-200
Vulnerability Consequences:Obtain Information
References:Source: MITRE
Type: CNA
CVE-2021-28116

Source: cve@mitre.org
Type: Mailing List, Third Party Advisory
cve@mitre.org

Source: CCN
Type: Squid-Cache Web site
Squid

Source: cve@mitre.org
Type: Product, Vendor Advisory
cve@mitre.org

Source: XF
Type: UNKNOWN
squid-cache-wccp-info-disclosure(196505)

Source: cve@mitre.org
Type: Broken Link
cve@mitre.org

Source: cve@mitre.org
Type: Mailing List, Third Party Advisory
cve@mitre.org

Source: cve@mitre.org
Type: Mailing List, Third Party Advisory
cve@mitre.org

Source: cve@mitre.org
Type: Third Party Advisory
cve@mitre.org

Source: cve@mitre.org
Type: Third Party Advisory
cve@mitre.org

Source: CCN
Type: ZDI-21-157
(0Day) Squid Cache WCCP Protocol Out-Of-Bounds Read Information Disclosure Vulnerability

Source: cve@mitre.org
Type: Third Party Advisory, VDB Entry
cve@mitre.org

Vulnerable Configuration:Configuration RedHat 1:
  • cpe:/a:redhat:enterprise_linux:8:*:*:*:*:*:*:*
    • Configuration RedHat 2:
  • cpe:/a:redhat:enterprise_linux:8::appstream:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:squid-cache:squid:*:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:7995
    P
    		bsh2-2.0.0.b6-150200.12.6.4 on GA media (Moderate)
    2023-06-20
    oval:org.opensuse.security:def:8062
    P
    		python3-ujson-1.35-150100.3.8.1 on GA media (Moderate)
    2023-06-20
    oval:org.opensuse.security:def:3527
    P
    		ipsec-tools-0.8.0-19.3.1 on GA media (Moderate)
    2022-06-28
    oval:org.opensuse.security:def:95157
    P
    		squid-5.4.1-150400.1.16 on GA media (Moderate)
    2022-06-22
    oval:com.redhat.rhsa:def:20221939
    P
    		RHSA-2022:1939: squid:4 security and bug fix update (Moderate)
    2022-05-10
    oval:org.opensuse.security:def:113456
    P
    		squid-5.2-1.1 on GA media (Moderate)
    2022-01-17
    oval:org.opensuse.security:def:111110
    P
    		Security update for squid (Moderate)
    2021-10-31
    oval:org.opensuse.security:def:99686
    P
    		 (Moderate)
    2021-10-20
    oval:org.opensuse.security:def:102766
    P
    		Security update for squid (Moderate)
    2021-10-20
    oval:org.opensuse.security:def:102215
    P
    		Security update for squid (Moderate)
    2021-10-20
    oval:org.opensuse.security:def:69084
    P
    		Security update for squid (Moderate)
    2021-10-20
    oval:org.opensuse.security:def:111755
    P
    		Security update for squid (Moderate)
    2021-10-20
    oval:org.opensuse.security:def:99151
    P
    		 (Moderate)
    2021-10-20
    oval:org.opensuse.security:def:69151
    P
    		Security update for squid (Moderate)
    2021-10-20
    oval:org.opensuse.security:def:118528
    P
    		Security update for squid (Moderate)
    2021-10-20
    oval:org.opensuse.security:def:99423
    P
    		 (Moderate)
    2021-10-20
    oval:org.opensuse.security:def:1639
    P
    		Security update for squid (Moderate)
    2021-10-20
    oval:org.opensuse.security:def:96076
    P
    		Security update for squid (Moderate)
    2021-10-20
    oval:org.opensuse.security:def:109432
    P
    		Security update for squid (Moderate)
    2021-10-20
    oval:org.opensuse.security:def:60382
    P
    		Security update for squid (Moderate)
    2021-10-11
    oval:org.opensuse.security:def:34559
    P
    		Security update for squid (Moderate)
    2021-10-11
    BACK
    squid-cache squid *