Nodemailer before 9.1.0 contains a quadratic time complexity vulnerability in the addressparser component that allows remote attackers to cause denial of service by supplying a crafted comma-separated address list. Attackers can send a single email with a large number of addresses to block the Node.js event loop for extended periods, consuming 100% CPU and freezing the process.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
High
Complete denial of service
CVSS Vector v4.0
Weakness Type (CWE)
Vulnerable Products 1
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Nodemailer Nodemailer
cpe:2.3:a:nodemailer:nodemailer:*:*:*:*:*:*:*:*
|
— |
9.1.0
|
References 6
https://github.com/nodemailer/nodemailer/security/advisories/GHSA-2x7j-588g-ccc2
GitHub Security Advisory (GHSA-2x7j-588g-ccc2)
https://github.com/nodemailer/nodemailer/commit/9116da9
Patch Commit
https://github.com/nodemailer/nodemailer/commit/7cc38af
Patch Commit
https://github.com/nodemailer/nodemailer/commit/34da642
Patch Commit
https://github.com/nodemailer/nodemailer/commit/83b8c48
Patch Commit
https://www.vulncheck.com/advisories/nodemailer-before-9.1.0-denial-of-service-…
VulnCheck Advisory: Nodemailer before 9.1.0 Denial of Service via addressparser