CVE-2017-6297 Weak cryptography in n/a
MikroTik RouterOS L2TP clients fail to enable IPsec after reboot, allowing attackers to intercept unencrypted traffic and steal credentials.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2017-6297?
CVE-2017-6297 is a medium-severity vulnerability in Mikrotik Routeros, published on 27 Feb 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The L2TP Client in MikroTik RouterOS versions 6.38.3 and 6.37.4 does not enable IPsec encryption after a reboot, which allows man-in-the-middle attackers to view transmitted data unencrypted and gain access to networks on the L2TP server by monitoring the packets for the transmitted data and obtaining the L2TP secret.
Weakness: CWE-311
Which versions are affected by CVE-2017-6297?
It affects 1 product.
Products include Mikrotik Routeros.
How do I fix CVE-2017-6297?
No fix has been published for CVE-2017-6297 yet. Limit exposure of the affected software until one is available.
Is CVE-2017-6297 being exploited?
There is no known exploitation of CVE-2017-6297 in the wild and no public exploit code.
Other vulnerabilities in Mikrotik Routeros
- CVE-2018-7445 MikroTik RouterOS Stack-Based Buffer Overflow
- CVE-2026-86060 MikroTik RouterOS Improper Neutralization of Argument Delimiters in a Command
- CVE-2018-14847 MikroTik Router OS Directory Traversal
- CVE-2026-67277 MikroTik RouterOS Missing Authentication for Critical Function
- CVE-2026-67279 Mikrotik RouterOS Improper Enforcement of Behavioral Workflow
Sources
Also known as GHSA-8p5m-cg5p-7249.