title: Buffer overflow vulnerability in uftpd
description: In uftpd before 2.11, there is a buffer overflow vulnerability in handle_PORT in ftpcmd.c that is caused by a buffer that is 16 bytes large being filled via sprintf() with user input based on the format specifier string %d.%d.%d.%d. The 16 byte size is correct for valid IPv4 addresses (len(&#39;255.255.255.255&#39;) == 16), but the format specifier %d allows more than 3 digits. This has been fixed in version 2.11
problem types: CWE-121: Stack-based Buffer Overflow
affected:
{
product: uftpd
vendor: troglobit
versions:
status: affected, version: < 2.11
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: LOW
baseScore: 6.5
baseSeverity: MEDIUM
confidentialityImpact: LOW
integrityImpact: LOW
privilegesRequired: LOW
scope: CHANGED
userInteraction: REQUIRED
vectorString: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
version: 3.1
]