CVE-2022-22250 In Junos OS and Junos OS Evolved, an attacker can cause a DoS by controlling a resource through its lifetime.
19.3R3-S5; 19.4R2; 20.2R3-S4; 20.3R3-S3; 20.4R3-S3; 21.1R3-S1; 21.2R3; 21.3R2; 21.4R1-S1; 21.4R2. If a device is configured in Active- Active topology with Active- Active Virtual Routing and Forwarding instance configured on both Device A and Device B. If Device A receives a Delete request with the remote MAC while Device B is configured to learn locally and respond, the memory may be corrupted in Device A. This may lead to a crash or reboot of the device. This issue is exploitable if Device A is in Active- Active topology. This issue can be exploited remotely. In an EVPN-MPLS scenario, if a device in an Active- Active topology is configured with Active- Active Virtual Routing and Forwarding instance on both Device A and Device B and Device A receives a Delete request with the remote MAC while Device B is configured to learn locally and respond, the memory may be corrupted in Device A. This may lead to a crash or reboot of the device. This issue is exploitable if Device A is in Active- Active topology. This issue can be exploited remotely. All versions of Junos OS 17.3R1 and later versions prior to 19.2
References:
CVE-2022-22250
19.3R3-S5; 19.4R2; 20.2R3-S4; 20.3R3-S3; 20.4R3-S3; 21.1R3-S1; 21.2R3; 21.3R2; 21.4R1-S1; 21.4R2
If a device is configured in Active- Active topology with Active- Active Virtual Routing and Forwarding instance configured on both Device A and Device B, if Device A receives a Delete request with the remote MAC while Device B is configured to learn locally and respond, the memory may be corrupted in Device A
Description
A vulnerability in the Junos operating system allows an attacker to corrupt memory on an affected device. The vulnerability exists because the Junos operating system is vulnerable to memory corruption when a device is configured in Active-Active topology with Active-Active Virtual Routing and Forwarding instance configured on both Device A and Device B. If Device A receives a Delete request with the remote MAC while Device B is configured to learn locally and respond, the memory may be corrupted in Device A. This may lead to a crash or reboot of the device. This issue is exploitable if Device A is in Active-Active topology. This issue can be exploited remotely. All versions of Junos OS 17.3R1 and later versions prior to 19.2 are vulnerable .
The vulnerability was found by David Wagner, who reported it to Micro Focus on September 1, 2016.
Summary
A device configured in Active- Active topology with Active- Active Virtual Routing and Forwarding instance configured on both Device A and Device B. If Device A receives a Delete request with the remote MAC while Device B is configured to learn locally and respond, the memory may be corrupted in Device A. This may lead to a crash or reboot of the device. This issue is exploitable if Device A is in Active- Active topology. This issue can be exploited remotely.
Products and Versions Affected
All versions of Junos OS 17.3R1 and later versions prior to 19.2
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Supported Devices
Device A
Device B
All versions of Junos OS 17.3R1 and later versions prior to 19.2
Timeline
Published on: 10/18/2022 03:15:00 UTC
Last modified on: 10/21/2022 17:24:00 UTC