CVE-2019-12568 — Stack-based overflow vulnerability in the logMess function in Open TFTP Server S

Stack-based overflow vulnerability in the logMess function in Open TFTP Server SP 1.66 and earlier allows remote attackers to perform a denial of service or execute arbitrary code via a long TFTP error packet, a different vulnerability than CVE-2018-10387 and CVE-2019-12567.

01What is this vulnerability?

Stack-based overflow vulnerability in the logMess function in Open TFTP Server SP 1.66 and earlier allows remote attackers to perform a denial of service or execute arbitrary code via a long TFTP error packet, a different vulnerability than CVE-2018-10387 and CVE-2019-12567.

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

08Timeline

• Published: 2019-12-23T22:45:54.000Z
• Last modified: 2024-08-04T23:24:38.898Z

09References

• sourceforge.net — https://sourceforge.net/p/tftp-server/discussion/550564/thread/a586ce62/