CVE-2021-26911 : core/imap/MCIMAPSession.cpp in Canary Mail before 3.22 has Missing SSL Certifica

core/imap/MCIMAPSession.cpp in Canary Mail before 3.22 has Missing SSL Certificate Validation for IMAP in STARTTLS mode.

Published 2021-02-17 21:15:13

Updated 2021-02-24 20:07:15

Source MITRE

View at NVD, CVE.org

Products affected by CVE-2021-26911

Canarymail » Canary Mail » Version: 3.20 For Iphone Os
cpe:2.3:a:canarymail:canary_mail:3.20:*:*:*:*:iphone_os:*:*
Matching versions
Canarymail » Canary Mail » Version: 3.21 For Iphone Os
cpe:2.3:a:canarymail:canary_mail:3.21:*:*:*:*:iphone_os:*:*
Matching versions
Libmailcore » Mailcore2 » Version: 0.6.4
cpe:2.3:a:libmailcore:mailcore2:0.6.4:*:*:*:*:*:*:*
Matching versions

EPSS FAQ

0.24%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 62 %

Percentile, the proportion of vulnerabilities that are scored at or less

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
5.8	MEDIUM	AV:N/AC:M/Au:N/C:P/I:P/A:N	8.6	4.9	NIST
Access Vector: Network Access Complexity: Medium Authentication: None Confidentiality Impact: Partial Integrity Impact: Partial Availability Impact: None
7.4	HIGH	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N	2.2	5.2	NIST
Attack Vector: Network Attack Complexity: High Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: None

CWE-295 Improper Certificate Validation

The product does not validate, or incorrectly validates, a certificate.

Assigned by: nvd@nist.gov (Primary)

https://apps.apple.com/us/app/canary-mail/id1236045954

‎Canary Mail App on the Mac App Store
Product;Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/02/17/3

oss-security - CVE-2021-26911: Canary Mail with IMAP STARTTLS missing certificate validation
Mailing List;Patch;Third Party Advisory
https://github.com/canarymail/mailcore2/commit/45acb4efbcaa57a20ac5127dc976538671fce018

[Core] Check Start/TLS cert · canarymail/mailcore2@45acb4e · GitHub
Patch;Third Party Advisory
https://census-labs.com/news/category/advisories/

CENSUS | IT Security Works
Third Party Advisory
https://census-labs.com/news/2021/02/17/canary-mail-app-missing-certificate-validation-check-on-imap-starttls/

CENSUS | IT Security Works
Exploit;Third Party Advisory
https://www.openwall.com/lists/oss-security/2021/02/17/3

oss-security - CVE-2021-26911: Canary Mail with IMAP STARTTLS missing certificate validation
Mailing List;Patch;Third Party Advisory

Jump to