ClamAV DoS vulnerability on mail parsing

Advisory ID CVE Number Date discovered Severity Advisory revision
STORM-2021-033 CVE-2021-1405 04/09/2021 medium v1

Vulnerability details

ClamAV crash caused by malformed mail parsing

Impacted products

ProductsSeverityDetail
Stormshield Network Security medium SNS is impacted
Netasq medium Netasq is impacted

Revisions

Version Date Description
v1  05/27/2021 Initial release

 



Stormshield Network Security

CVSS v3.1 Overall Score: 5.3      

Analysis

Impacted version

The parsing of some malformed mails can lead to the crash of ClamAV service.
  • SNS 3.0.0 to 3.7.19
  • SNS 3.8.0 to 3.11.7
  • SNS 4.1.5
  • SNS 4.2.1

Workaround solution

Solution

There is no workaround solution.

The 3.7.20, 3.11.8, 4.1.6 and 4.2.2 update fixes this vulnerability.



Attack Vector Attack Complexity Privileges Required User Interaction Scope Confidentiality Impact Integrity Impact Availability impact
Network Low None None Unchanged None None Low
CVSS Base score: 5.3 CVSS Vector: (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
Exploit Code Maturity Remediation Level Report Confidence
Unproven that exploit exists Official fix Confirmed
CVSS Temporal score: 4.6 CVSS Vector: (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C)
Confidentiality Requirement Integrity Requirement Availability Requirement
High High High
CVSS Environmental score: 5.3 CVSS Vector: (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C/CR:H/IR:H/AR:H/MAV:X/MAC:X/MPR:X/MUI:X/MS:X/MC:X/MI:X/MA:X)


Netasq

CVSS v3.1 Overall Score: 5.3      

Analysis

Impacted version

The parsing of some malformed mails can lead to the crash of ClamAV service.
  • Netasq 9.1.0 to 9.1.11

Workaround solution

Solution

There is no workaround solution.

There is no solution.



Attack Vector Attack Complexity Privileges Required User Interaction Scope Confidentiality Impact Integrity Impact Availability impact
Network Low None None Unchanged None None Low
CVSS Base score: 5.3 CVSS Vector: (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
Exploit Code Maturity Remediation Level Report Confidence
Unproven that exploit exists Official fix Confirmed
CVSS Temporal score: 4.6 CVSS Vector: (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C)
Confidentiality Requirement Integrity Requirement Availability Requirement
High High High
CVSS Environmental score: 5.3 CVSS Vector: (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C/CR:H/IR:H/AR:H/MAV:X/MAC:X/MPR:X/MUI:X/MS:X/MC:X/MI:X/MA:X)