Buffer overflow in Atftp Project

CVE-2019-11365

An issue was discovered in atftpd in atftp 0.7.1. A remote attacker may send a crafted packet triggering a stack-based buffer overflow due to an insecurely implemented strncpy call. The vulnerability is triggered by sending an error packet of 3 bytes or fewer. There are multiple instances of this vulnerable strncpy pattern within the code base, specifically within tftpd_file.c, tftp_file.c, tftpd_mtftp.c, and tftp_mtftp.c.

Vulnerability class: Buffer Overflow

EPSS: 0.043 (90.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2019-11365?
CVE-2019-11365 is a critical-severity vulnerability in Atftp Project, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2019-04-20.
How severe is CVE-2019-11365?
Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2019-11365 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.