Summaryinfo

A vulnerability, which was classified as critical, has been found in atftp 0.7.1. Affected by this issue is some unknown functionality of the file tftpd_file.c. The manipulation as part of Crafted Packet leads to memory corruption. This vulnerability is handled as CVE-2019-11365. The attack may be launched remotely. There is no exploit available. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Detailsinfo

A vulnerability classified as critical was found in atftp 0.7.1. Affected by this vulnerability is an unknown part of the file tftpd_file.c. The manipulation as part of a Crafted Packet leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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.

The bug was discovered 04/17/2019. The weakness was published 04/20/2019 (Website). The advisory is shared at seclists.org. This vulnerability is known as CVE-2019-11365 since 04/20/2019. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 3 days. During that time the estimated underground price was around $0-$5k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 172290 (SUSE Enterprise Linux Security Update for atftp (SUSE-SU-2019:1091-1)).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Similar entry is available at VDB-133886. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

• atftp

Version

• 0.7.1

CPE 2.3info

• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍

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