CVE-2013-4687 Denial of service in n/a
Remote attackers can crash the flowd daemon on Juniper SRX devices via crafted TCP packets when specific ALGs are enabled.
- 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-2013-4687?
CVE-2013-4687 is a high-severity denial of service vulnerability in Juniper Junos, published on 11 Jul 2013. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
flowd in Juniper Junos 10.4 before 10.4S14, 11.2 and 11.4 before 11.4R6-S2, and 12.1 before 12.1R6 on SRX devices, when certain Application Layer Gateways (ALGs) are enabled, allows remote attackers to cause a denial of service (daemon crash) via crafted TCP packets, aka PRs 727980, 806269, and 835593.
Which versions are affected by CVE-2013-4687?
It affects 13 products.
Products include Juniper Junos, Juniper Srx100, Juniper Srx110, Juniper Srx1400, Juniper Srx210, Juniper Srx220 and 7 more.
How do I fix CVE-2013-4687?
No fix has been published for CVE-2013-4687 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2013-4687 being exploited?
There is no known exploitation of CVE-2013-4687 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-9w9w-r74r-xfwf.