CVE-2017-2304 Information disclosure in Junos OS running on QFX3500, QFX3600, QFX5100, QFX5200, EX4300, EX4600 devices
Attackers can read sensitive system memory or previous packet data from unpatched Juniper network switches due to missing Ethernet packet padding.
- 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-2017-2304?
CVE-2017-2304 is a high-severity vulnerability in Juniper Junos, published on 30 May 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Juniper Networks QFX3500, QFX3600, QFX5100, QFX5200, EX4300 and EX4600 devices running Junos OS 14.1X53 prior to 14.1X53-D40, 15.1X53 prior to 15.1X53-D40, 15.1 prior to 15.1R2, do not pad Ethernet packets with zeros, and thus some packets can contain fragments of system memory or data from previous packets. This issue is also known as 'Etherleak'
Weakness: CWE-200
Which versions are affected by CVE-2017-2304?
It affects 1 product.
Products include Juniper Junos.
How do I fix CVE-2017-2304?
No fix has been published for CVE-2017-2304 yet. Limit exposure of the affected software until one is available.
Is CVE-2017-2304 being exploited?
There is no known exploitation of CVE-2017-2304 in the wild and no public exploit code.
Other vulnerabilities in Juniper Junos
- CVE-2023-36845 Juniper Junos OS EX Series and SRX Series PHP External Variable Modification
- CVE-2020-1631 Juniper Junos OS Path Traversal
- CVE-2025-21590 Juniper Junos OS Improper Isolation or Compartmentalization
- CVE-2023-36851 Juniper Junos OS SRX Series Missing Authentication for Critical Function
- CVE-2023-36844 Juniper Junos OS EX Series PHP External Variable Modification
Sources
Also known as GHSA-2wf6-7ffx-gx7r.