Vulnerability Name:

CVE-2021-28651 (CCN-202641)

Assigned:2021-05-10
Published:2021-05-10
Updated:2021-09-14
Summary:An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to a buffer-management bug, it allows a denial of service. When resolving a request with the urn: scheme, the parser leaks a small amount of memory. However, there is an unspecified attack methodology that can easily trigger a large amount of memory consumption.
CVSS v3 Severity:7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
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): None
Integrity (I): None
Availibility (A): High
8.6 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H)
7.5 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Changed
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
7.4 High (REDHAT CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:H)
6.4 Medium (REDHAT Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Changed
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
CVSS v2 Severity:5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
7.8 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-401
CWE-400
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2021-28651

Source: MISC
Type: Exploit, Issue Tracking, Vendor Advisory
https://bugs.squid-cache.org/show_bug.cgi?id=5104

Source: XF
Type: UNKNOWN
squidcache-cve202128651-dos(202641)

Source: CCN
Type: SQUID-2021:1
Denial of Service in URN processing

Source: MISC
Type: Patch, Third Party Advisory
https://github.com/squid-cache/squid/security/advisories/GHSA-ch36-9jhx-phm4

Source: MLIST
Type: Mailing List, Third Party Advisory
[debian-lts-announce] 20210614 [SECURITY] [DLA 2685-1] squid3 security update

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2021-c0bec55ec7

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2021-24af72ff2c

Source: CONFIRM
Type: Third Party Advisory
https://security.netapp.com/advisory/ntap-20210716-0007/

Source: DEBIAN
Type: Third Party Advisory
DSA-4924

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2021-28651

Vulnerable Configuration:Configuration 1:
  • cpe:/a:squid-cache:squid:*:*:*:*:*:*:*:* (Version >= 2.0 and < 4.15)
  • OR cpe:/a:squid-cache:squid:*:*:*:*:*:*:*:* (Version >= 5.0 and < 5.0.6)

    • Configuration 2:
  • cpe:/o:debian:debian_linux:9.0:*:*:*:*:*:*:*
  • OR cpe:/o:debian:debian_linux:10.0:*:*:*:*:*:*:*

    • Configuration 3:
  • cpe:/o:fedoraproject:fedora:33:*:*:*:*:*:*:*
  • OR cpe:/o:fedoraproject:fedora:34:*:*:*:*:*:*:*

    • Configuration 4:
  • cpe:/a:netapp:cloud_manager:-:*:*:*:*:*:*:*

    • 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:2.0:*:*:*:*:*:*:*
  • OR cpe:/a:squid-cache:squid:5.0.1:*:*:*:*:*:*:*
  • OR cpe:/a:squid-cache:squid:4.14:*:*:*:*:*:*:*
  • OR cpe:/a:squid-cache:squid:5.0.5:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:8036
    P
    		libtdsodbc0-1.1.36-150400.12.3 on GA media (Moderate)
    2023-06-20
    oval:org.opensuse.security:def:7966
    P
    		libsrtp2-1-2.2.0-1.34 on GA media (Moderate)
    2023-06-12
    oval:org.opensuse.security:def:125754
    P
    		Security update for squid (Important)
    2022-07-13
    oval:org.opensuse.security:def:126918
    P
    		Security update for squid (Important)
    2022-07-13
    oval:org.opensuse.security:def:127315
    P
    		Security update for squid (Important)
    2022-07-13
    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:org.opensuse.security:def:99480
    P
    		 (Critical)
    2022-02-08
    oval:org.opensuse.security:def:113455
    P
    		squid-4.16-1.5 on GA media (Moderate)
    2022-01-17
    oval:com.redhat.rhsa:def:20214292
    P
    		RHSA-2021:4292: squid:4 security, bug fix, and enhancement update (Moderate)
    2021-11-09
    oval:org.opensuse.security:def:106854
    P
    		squid-4.16-1.5 on GA media (Moderate)
    2021-10-01
    oval:org.opensuse.security:def:99679
    P
    		 (Critical)
    2021-09-20
    oval:org.opensuse.security:def:111581
    P
    		Security update for squid (Important)
    2021-07-11
    oval:org.opensuse.security:def:111438
    P
    		Security update for squid (Important)
    2021-06-16
    oval:org.opensuse.security:def:69487
    P
    		Security update for squid (Important)
    2021-06-11
    oval:org.opensuse.security:def:9531
    P
    		Security update for squid (Important)
    2021-06-11
    oval:org.opensuse.security:def:118499
    P
    		Security update for squid (Important)
    2021-06-11
    oval:org.opensuse.security:def:97067
    P
    		Security update for squid (Important)
    2021-06-11
    oval:org.opensuse.security:def:93081
    P
    		Security update for squid (Important)
    2021-06-11
    oval:org.opensuse.security:def:70421
    P
    		Security update for squid (Important)
    2021-06-11
    oval:org.opensuse.security:def:8784
    P
    		Security update for squid (Important)
    2021-06-11
    oval:org.opensuse.security:def:1613
    P
    		Security update for squid (Important)
    2021-06-11
    oval:org.opensuse.security:def:99090
    P
    		Security update for squid (Important)
    2021-06-11
    oval:org.opensuse.security:def:92530
    P
    		Security update for squid (Important)
    2021-06-11
    oval:org.opensuse.security:def:69671
    P
    		Security update for squid (Important)
    2021-06-11
    oval:org.opensuse.security:def:9730
    P
    		Security update for squid (Important)
    2021-06-11
    oval:org.opensuse.security:def:99987
    P
    		Security update for squid (Important)
    2021-06-11
    oval:org.opensuse.security:def:93234
    P
    		Security update for squid (Important)
    2021-06-11
    oval:org.opensuse.security:def:91945
    P
    		Security update for squid (Important)
    2021-06-11
    oval:org.opensuse.security:def:69055
    P
    		Security update for squid (Important)
    2021-06-11
    oval:org.opensuse.security:def:8979
    P
    		Security update for squid (Important)
    2021-06-11
    oval:org.opensuse.security:def:99281
    P
    		Security update for squid (Important)
    2021-06-11
    oval:org.opensuse.security:def:92729
    P
    		Security update for squid (Important)
    2021-06-11
    oval:org.opensuse.security:def:69870
    P
    		Security update for squid (Important)
    2021-06-11
    oval:org.opensuse.security:def:10101
    P
    		Security update for squid (Important)
    2021-06-11
    oval:org.opensuse.security:def:102737
    P
    		Security update for squid (Important)
    2021-06-11
    oval:org.opensuse.security:def:96047
    P
    		Security update for squid (Important)
    2021-06-11
    oval:org.opensuse.security:def:92140
    P
    		Security update for squid (Important)
    2021-06-11
    oval:org.opensuse.security:def:69125
    P
    		Security update for squid (Important)
    2021-06-11
    oval:org.opensuse.security:def:9347
    P
    		Security update for squid (Important)
    2021-06-11
    oval:org.opensuse.security:def:109403
    P
    		Security update for squid (Important)
    2021-06-11
    oval:org.opensuse.security:def:92928
    P
    		Security update for squid (Important)
    2021-06-11
    oval:org.opensuse.security:def:70241
    P
    		Security update for squid (Important)
    2021-06-11
    oval:org.opensuse.security:def:10281
    P
    		Security update for squid (Important)
    2021-06-11
    oval:org.opensuse.security:def:8604
    P
    		Security update for squid (Important)
    2021-06-11
    oval:org.opensuse.security:def:99647
    P
    		 (Important)
    2021-06-11
    oval:org.opensuse.security:def:98895
    P
    		Security update for squid (Important)
    2021-06-11
    oval:org.opensuse.security:def:92331
    P
    		Security update for squid (Important)
    2021-06-11
    oval:org.opensuse.security:def:34450
    P
    		Security update for squid (Important)
    2021-06-02
    oval:org.opensuse.security:def:60273
    P
    		Security update for squid (Important)
    2021-06-02
    BACK
    squid-cache squid *
    squid-cache squid *
    debian debian linux 9.0
    debian debian linux 10.0
    fedoraproject fedora 33
    fedoraproject fedora 34
    netapp cloud manager -
    squid-cache squid 2.0
    squid-cache squid 5.0.1
    squid-cache squid 4.14
    squid-cache squid 5.0.5