CVE-2024-47494: Junos OS: Due to a race condition AgentD process causes a memory corruption and FPC reset
First published: Fri Oct 11 2024(Updated: )
A Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability in the AgentD process of Juniper Networks Junos OS allows an attacker who is already causing impact to established sessions which generates counter changes picked up by the AgentD process during telemetry polling, to move the AgentD process into a state where AgentD attempts to reap an already destroyed sensor. This reaping attempt then leads to memory corruption causing the FPC to crash which is a Denial of Service (DoS). The FPC will recover automatically without user intervention after the crash. This issue affects Junos OS: * All versions before 21.4R3-S9 * From 22.2 before 22.2R3-S5, * From 22.3 before 22.3R3-S4, * From 22.4 before 22.4R3-S3, * From 23.2 before 23.2R2-S2, * From 23.4 before 23.4R2. This issue does not affect Junos OS Evolved.
Credit: sirt@juniper.net
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Juniper Junos | <21.4R3-S9>undefined>undefined>undefined>undefined>undefined |
Remedy
The following software releases have been updated to resolve this specific issue: Junos OS: 21.4R3-S9, 22.2R3-S5, 22.3R3-S4, 22.4R3-S3, 23.2R2-S2, 23.4R2, 24.2R1, and all subsequent releases.
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2024-47494?
CVE-2024-47494 has a high severity rating due to its potential impact on system integrity and availability.
How do I fix CVE-2024-47494?
To fix CVE-2024-47494, update your Juniper Networks Junos OS to the latest available version that addresses this vulnerability.
What systems are affected by CVE-2024-47494?
CVE-2024-47494 affects Juniper Networks Junos OS versions up to but not including 21.4R3-S9.
What kind of attack does CVE-2024-47494 enable?
CVE-2024-47494 allows an attacker to exploit a race condition, potentially leading to manipulation of established session impacts.
Is there a workaround for CVE-2024-47494?
No specific workaround is recommended for CVE-2024-47494; updating to a secure version is the best response.
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