CVE-2021-26911
What it is
core/imap/MCIMAPSession.cpp in Canary Mail before 3.22 has Missing SSL Certificate Validation for IMAP in STARTTLS mode.
At a glance
- Exploitability
- Can be exploited over the network without logging in. High risk of data exposure, data tampering.
- Exploit odds
- 1.1% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 1.1% in the next 30 days (EPSS).
- Severity: 7.4 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 1.1% · EPSS, next 30 days
- Weakness
- CWE-295 · Improper certificate validation
- Record status
- Modified
Affected
- Canarymail Canary Mail 3.20
- Canarymail Canary Mail 3.21
- Libmailcore mailcore2 0.6.4
Attack profile CVSS 3.1 · 7.4
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- None
Raw vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2021-26911.md and follow it. Check whether this project is affected by CVE-2021-26911. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- http://www.openwall.com/lists/oss-security/2021/02/17/3
- https://github.com/canarymail/mailcore2/commit/45acb4efbcaa57a20ac5127dc976538671fce018
- https://www.openwall.com/lists/oss-security/2021/02/17/3
- http://www.openwall.com/lists/oss-security/2021/02/17/3
- https://github.com/canarymail/mailcore2/commit/45acb4efbcaa57a20ac5127dc976538671fce018
- https://www.openwall.com/lists/oss-security/2021/02/17/3
References
- http://www.openwall.com/lists/oss-security/2021/02/17/3
- https://apps.apple.com/us/app/canary-mail/id1236045954
- https://census-labs.com/news/2021/02/17/canary-mail-app-missing-certificate-validation-check-on-imap-starttls/
- https://census-labs.com/news/category/advisories/
- https://github.com/canarymail/mailcore2/commit/45acb4efbcaa57a20ac5127dc976538671fce018
- https://www.openwall.com/lists/oss-security/2021/02/17/3
- http://www.openwall.com/lists/oss-security/2021/02/17/3
- https://apps.apple.com/us/app/canary-mail/id1236045954
- https://census-labs.com/news/2021/02/17/canary-mail-app-missing-certificate-validation-check-on-imap-starttls/
- https://census-labs.com/news/category/advisories/
- https://github.com/canarymail/mailcore2/commit/45acb4efbcaa57a20ac5127dc976538671fce018
- https://www.openwall.com/lists/oss-security/2021/02/17/3