Format string vulnerability in the log function in Net::Server 0.87 and earlier, as used in Postfix Greylisting Policy Server (Postgrey) 1.18 and earlier, and possibly other products, allows remote attackers to cause a denial of service (crash) via format string specifiers that are not properly handled before being sent to syslog, as demonstrated using sender addresses to Postgrey.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Postgrey | Postgrey | * | 1.16 (including) |
| Postgrey | Postgrey | 1.17 (including) | 1.17 (including) |
| Postgrey | Postgrey | 1.18 (including) | 1.18 (including) |