Out-of-bounds Write Affecting atftp package, versions <0.7.git20120829-3.1~0.18.04.1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU1804-ATFTP-1011889
- published10 Sept 2020
- disclosed20 Apr 2019
Introduced: 20 Apr 2019
CVE-2019-11365 (opens in a new tab)How to fix?
Upgrade Ubuntu:18.04 atftp to version 0.7.git20120829-3.1~0.18.04.1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream atftp package and not the atftp package as distributed by Ubuntu.
See How to fix? for Ubuntu:18.04 relevant fixed versions and status.
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.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2019-11365
- https://seclists.org/bugtraq/2019/May/16
- https://www.debian.org/security/2019/dsa-4438
- https://security.gentoo.org/glsa/202003-14
- https://pulsesecurity.co.nz/advisories/atftpd-multiple-vulnerabilities
- https://sourceforge.net/p/atftp/code/ci/abed7d245d8e8bdfeab24f9f7f55a52c3140f96b/
- https://lists.debian.org/debian-lts-announce/2019/05/msg00012.html
- https://usn.ubuntu.com/4540-1/