Description
bbs-go through 4.4.6 contains an improper certificate validation vulnerability that allows network-positioned attackers to intercept SMTP traffic because sendEmail() sets InsecureSkipVerify to true. Attackers can present any certificate to capture SMTP PLAIN auth credentials and read or modify outgoing password-reset and verification emails.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| mlogclub | bbs-go | ≤ 4.4.6 | — |
References
- GitHub Issue #310 issue-tracking
- https://github.com/mlogclub/bbs-go product
- Fix commit patch
- https://github.com/mlogclub/bbs-go/blob/v4.4.6/internal/services/email_service.go#L86-L113 technical-description
- VulnCheck Advisory: bbs-go through 4.4.6 Improper TLS Certificate Validation in SMTP Email Service third-party-advisory