Vulnerability CVE-2021-37746

Vulnerability Name:

CVE-2021-37746 (CCN-206559)

Assigned:

2021-05-23

Published:

2021-05-23

Updated:

2021-09-20

Summary:

textview_uri_security_check in textview.c in Claws Mail before 3.18.0, and Sylpheed through 3.7.0, does not have sufficient link checks before accepting a click.

CVSS v3 Severity:

6.1 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N)
5.3 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/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): Low Integrity (I): Low Availibility (A): None

5.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)
4.6 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/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): Low Availibility (A): None

CVSS v2 Severity:

5.8 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:P/I:P/A:N)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Medium Authentication (Au): None
Impact Metrics:	Confidentiality (C): Partial Integrity (I): Partial Availibility (A): None

5.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Low Athentication (Au): None
Impact Metrics:	Confidentiality (C): None Integrity (I): Partial Availibility (A): None

Vulnerability Type:

CWE-601

Vulnerability Consequences:

Unknown

References:

Source: MITRE
Type: CNA
CVE-2021-37746

Source: MISC
Type: Patch, Vendor Advisory
https://claws-mail.org/download.php?file=releases/claws-mail-3.18.0.tar.xz

Source: XF
Type: UNKNOWN
clawsmail-cve202137746-unspecified(206559)

Source: CCN
Type: claws GIT Repository
harden link checker before accepting click

Source: MISC
Type: Patch, Vendor Advisory
https://git.claws-mail.org/?p=claws.git;a=commit;h=ac286a71ed78429e16c612161251b9ea90ccd431

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2021-a4e9c45f9e

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2021-3823463b9a

Source: CCN
Type: Sylpheed Web site
Sylpheed

Source: MISC
Type: Patch, Third Party Advisory
https://sylpheed.sraoss.jp/sylpheed/v3.7/sylpheed-3.7.0.tar.xz

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2021-37746

Vulnerable Configuration:

Configuration 1:

cpe:/a:claws-mail:claws-mail:*:*:*:*:*:*:*:* (Version < 3.18.0)

Configuration 2:

cpe:/a:sylpheed_project:sylpheed:*:*:*:*:*:*:*:* (Version <= 3.7.0)

Configuration 3:

cpe:/o:fedoraproject:fedora:33:*:*:*:*:*:*:*

OR cpe:/o:fedoraproject:fedora:34:*:*:*:*:*:*:*

Denotes that component is vulnerable

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