Vulnerability CVE-2021-33582

Vulnerability Name:

CVE-2021-33582 (CCN-208703)

Assigned:

2021-09-01

Published:

2021-09-01

Updated:

2023-01-20

Summary:

Cyrus IMAP before 3.4.2 allows remote attackers to cause a denial of service (multiple-minute daemon hang) via input that is mishandled during hash-table interaction. Because there are many insertions into a single bucket, strcmp becomes slow. This is fixed in 3.4.2, 3.2.8, and 3.0.16.

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

7.5 High (CCN 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 (CCN 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

7.5 High (REDHAT 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 (REDHAT 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

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-400

Vulnerability Consequences:

Denial of Service

References:

Source: MITRE
Type: CNA
CVE-2021-33582

Source: CCN
Type: Cyrus Web site
Cyrus IMAP 3.4.2, 3.2.8, and 3.0.16 released

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

Source: XF
Type: UNKNOWN
imap-cve202133582-dos(208703)

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

Source: cve@mitre.org
Type: Not Applicable, Third Party Advisory
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: Mailing List, Third Party Advisory
cve@mitre.org

Source: cve@mitre.org
Type: Patch, Release Notes, Vendor Advisory
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:cyrus:imap:3.0.2:*:*:*:*:*:*:*

OR cpe:/a:cyrus:imap:2.5.12:*:*:*:*:*:*:*

OR cpe:/a:cyrus:imap:3.0.9:*:*:*:*:*:*:*

OR cpe:/a:cyrus:imap:2.5.14:*:*:*:*:*:*:*

OR cpe:/a:cyrus:imap:3.0.12:*:*:*:*:*:*:*

OR cpe:/a:cyrus:imap:3.1.7:*:*:*:*:*:*:*

OR cpe:/a:cyrus:imap:3.2.0:-:*:*:*:*:*:*

OR cpe:/a:cyrus:imap:3.3.0:*:*:*:*:*:*:*

OR cpe:/a:cyrus:imap:3.4.0:-:*:*:*:*:*:*

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:com.redhat.rhsa:def:20213492	P	RHSA-2021:3492: cyrus-imapd security update (Important)	2021-09-13
oval:org.opensuse.security:def:44537	P	Security update for cyrus-imapd (Moderate)	2021-09-09
oval:org.opensuse.security:def:38807	P	Security update for cyrus-imapd (Moderate)	2021-09-09
oval:org.opensuse.security:def:40107	P	Security update for cyrus-imapd (Moderate)	2021-09-09
oval:org.opensuse.security:def:43237	P	Security update for cyrus-imapd (Moderate)	2021-09-09

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