VDB
CVE-2016-2517
CVE-2016-2517
PUBLISHED
NTP before 4.2.8p7 and 4.3.x before 4.3.92 allows remote attackers to cause a denial of service (prevent subsequent authentication) by leveraging knowledge of the controlkey or requestkey and sending a crafted packet to ntpd, which changes the value of trustedkey, controlkey, or requestkey. NOTE: this vulnerability exists because of a CVE-2016-2516 regression.
EPSS 3.01% · 86.9th percentile
Risk Scores
EPSS Score
3.01%
86.9th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:Pro:14.04:LTS | ntp | 0, 1:4.2.6.p5+dfsg-3ubuntu2.14.04.1, 1:4.2.6.p5+dfsg-3ubuntu2.14.04.2 |
| Ubuntu:16.04:LTS | ntp | 0, 1:4.2.6.p5+dfsg-3ubuntu8, 1:4.2.6.p5+dfsg-3ubuntu9 |
Exploit Intelligence
- Kouf320/attacker-lab-cve-2017-5638-cve-2021-41773-paper (github-poc)
- Kouf320/attacker-lab-cve-2017-5638-cve-2021-41773-paper (github-poc)
- Kouf320/attacker-lab-cve-2017-5638-cve-2021-41773-paper (github-poc)
- Kouf320/attacker-lab-cve-2017-5638-cve-2021-41773-paper (github-poc)
- Kouf320/attacker-lab-cve-2017-5638-cve-2021-41773-paper (github-poc)
- Kouf320/attacker-lab-cve-2017-5638-cve-2021-41773-paper (github-poc)
- Using Struts2 and PowerShell to recreate CVE-2017-5638 OGNL Injection vulnerability. (github-poc)
- Using Struts2 and PowerShell to recreate CVE-2017-5638 OGNL Injection vulnerability. (github-poc)
- Using Struts2 and PowerShell to recreate CVE-2017-5638 OGNL Injection vulnerability. (github-poc)
- Using Struts2 and PowerShell to recreate CVE-2017-5638 OGNL Injection vulnerability. (github-poc)
…and 566 more exploits
Timeline
- Apr 26, 2016 CVE Published
- Oct 2, 2020 PoC Published
- Nov 6, 2020 PoC Published
- Sep 6, 2021 PoC Published
- Feb 4, 2022 EPSS Score
- Mar 29, 2022 EPSS Score
- Jul 12, 2022 EPSS Score
- Sep 3, 2022 EPSS Score
- Dec 18, 2022 EPSS Score
- Feb 8, 2023 EPSS Score
- Mar 7, 2023 EPSS Score
- May 25, 2023 EPSS Score
References
- https://ubuntu.com/security/CVE-2016-2517 third-party-advisory
- http://support.ntp.org/bin/view/Main/SecurityNotice#April_2016_NTP_4_2_8p7_Security third-party-advisory
- https://www.cve.org/CVERecord?id=CVE-2016-2517 third-party-advisory