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"value": "To be exposed to this issue the device needs to be configured with a GTP profile as follows:
[ security policies ... policy <policy-name> then permit application-services gtp-profile <profile-name> ]"
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"value": "An Improper Locking vulnerability in the GTP plugin of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (Dos).
If an SRX Series device receives a specifically malformed GPRS Tunnelling Protocol (GTP) Modify Bearer Request message, a lock is acquired and never released. This results in other threads not being able to acquire a lock themselves, causing a watchdog timeout leading to FPC crash and restart. This issue leads to a complete traffic outage until the device has automatically recovered.
This issue affects Junos OS on SRX Series:- all versions before 22.4R3-S8,
- 23.2 versions before 23.2R2-S5,
- 23.4 versions before 23.4R2-S6,
- 24.2 versions before 24.2R2-S3,
- 24.4 versions before 24.4R2-S2,
- 25.2 versions before 25.2R1-S1, 25.2R2.
"
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"references": [
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"tags": [
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"url": "https://supportportal.juniper.net/JSA106015"
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"source": {
"advisory": "JSA106015",
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"discovery": "USER"
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"title": "Junos OS: SRX Series: A specifically malformed GTP message will cause an FPC crash",
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