Junos OS and Junos OS Evolved: PPMD goes into infinite loop upon receipt of malformed OSPF TLV
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| Juniper Networks | Junos OS | affected |
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| Juniper Networks | Junos OS Evolved | affected |
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Configuration 1 [-]
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Configuration 2 [-]
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No data.
No data available yet.
Vendor Solution
The following software releases have been updated to resolve this specific issue: Junos OS: 19.1R3-S9, 19.2R3-S5, 19.3R3-S3, 19.4R3-S9, 20.1R3, 20.2R3-S1, 20.3R3, 20.4R3, 21.1R2, 21.2R1, and all subsequent releases. Junos OS Evolved: 20.4R3-S3-EVO, 21.1R2-EVO, 21.2R1-EVO, and all subsequent releases.
Vendor Workaround
There are no viable workarounds for this issue. However, service can be restored by restarting the PPMD process from the Junos shell: First, identify the PID for the daemon. root@Junos:~ # ps -aux | grep "[p]pm" root 73848 0.0 0.0 740624 14072 - S 29Apr22 20:53.61 /usr/sbin/ppmd -N Second, kill the process. root@Junos:~ # kill -9 73848
| Source | ID | Title |
|---|---|---|
EUVD |
EUVD-2022-27371 | An Improper Check or Handling of Exceptional Conditions vulnerability in the processing of a malformed OSPF TLV in Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated adjacent attacker to cause the periodic packet management daemon (PPMD) process to go into an infinite loop, which in turn can cause protocols and functions reliant on PPMD such as OSPF neighbor reachability to be impacted, resulting in a sustained Denial of Service (DoS) condition. The DoS condition persists until the PPMD process is manually restarted. This issue affects: Juniper Networks Junos OS: All versions prior to 19.1R3-S9; 19.2 versions prior to 19.2R3-S5; 19.3 versions prior to 19.3R3-S3; 19.4 versions prior to 19.4R3-S9; 20.1 versions prior to 20.1R3; 20.2 versions prior to 20.2R3-S1; 20.3 versions prior to 20.3R3; 20.4 versions prior to 20.4R3; 21.1 versions prior to 21.1R2. Juniper Networks Junos OS Evolved: All versions prior to 20.4R3-S3-EVO; 21.1 versions prior to 21.1R2-EVO. |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.321% probability within 30 days)
| Link | Providers |
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| https://kb.juniper.net/JSA69874 |
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