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    <lastBuildDate>Wed, 07 Oct 2026 04:56:46 +0000</lastBuildDate>
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      <title>CVE-2024-21596 — Junos OS and Junos OS Evolved: A specific BGP UPDATE message will cause a crash in the backup Routing Engine in NSR-ena…</title>
      <link>https://cve.radiocsirt.org/vuln/cve-2024-21596</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Juniper Networks Junos OS, Juniper Networks Junos OS Evolved&lt;/p&gt;
&lt;p&gt;A Heap-based Buffer Overflow vulnerability in the Routing Protocol Daemon (RPD) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, network based attacker to cause a Denial of Service (DoS).&lt;/p&gt;
&lt;p&gt;If an attacker sends a specific BGP UPDATE message to the device, this will cause a memory overwrite and therefore an RPD crash and restart in the backup Routing Engine (RE). Continued receipt of these packets will cause a sustained Denial of Service (DoS) condition in the backup RE.&lt;/p&gt;
&lt;p&gt;The primary RE is not impacted by this issue and there is no impact on traffic.&lt;/p&gt;
&lt;p&gt;This issue only affects devices with NSR enabled.&lt;/p&gt;
&lt;p&gt;Note: NSR is not supported on the SRX Series and is therefore not affected by this vulnerability.
This issue requires an attacker to have an established BGP session to a system affected by the issue. This issue affects both eBGP and iBGP implementations.&lt;/p&gt;
&lt;p&gt;This issue affects:&lt;/p&gt;
&lt;p&gt;Juniper Networks Junos OS&lt;/p&gt;
&lt;p&gt;*  All versions earlier than 20.4R3-S9;
  *  21.2 versions earlier than 21.2R3-S7;
  *  21.3 versions earlier than 21.3R3-S5;
  *  21.4 versions earlier than 21.4R3-S5;
  *  22.1 versions earlier than 22.1R3-S4;
  *  22.2 versions earlier than 22.2R3-S2;
  *  22.3 versions earlier than 22.3R3-S1;
  *  22.4 versions earlier than 22.4R2-S2, 22.4R3;
  *  23.1 versions earlier than 23.1R2;
  *  23.2 versions earlier than 23.2R1-S2, 23.2R2.&lt;/p&gt;
&lt;p&gt;Juniper Networks Junos OS Evolved&lt;/p&gt;
&lt;p&gt;*  All versions earlier than 21.3R3-S5-EVO;
  *  21.4-EVO versions earlie…&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Juniper Networks Junos OS, Juniper Networks Junos OS Evolved&lt;/p&gt;
&lt;p&gt;A Heap-based Buffer Overflow vulnerability in the Routing Protocol Daemon (RPD) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, network based attacker to cause a Denial of Service (DoS).&lt;/p&gt;
&lt;p&gt;If an attacker sends a specific BGP UPDATE message to the device, this will cause a memory overwrite and therefore an RPD crash and restart in the backup Routing Engine (RE). Continued receipt of these packets will cause a sustained Denial of Service (DoS) condition in the backup RE.&lt;/p&gt;
&lt;p&gt;The primary RE is not impacted by this issue and there is no impact on traffic.&lt;/p&gt;
&lt;p&gt;This issue only affects devices with NSR enabled.&lt;/p&gt;
&lt;p&gt;Note: NSR is not supported on the SRX Series and is therefore not affected by this vulnerability.
This issue requires an attacker to have an established BGP session to a system affected by the issue. This issue affects both eBGP and iBGP implementations.&lt;/p&gt;
&lt;p&gt;This issue affects:&lt;/p&gt;
&lt;p&gt;Juniper Networks Junos OS&lt;/p&gt;
&lt;p&gt;*  All versions earlier than 20.4R3-S9;
  *  21.2 versions earlier than 21.2R3-S7;
  *  21.3 versions earlier than 21.3R3-S5;
  *  21.4 versions earlier than 21.4R3-S5;
  *  22.1 versions earlier than 22.1R3-S4;
  *  22.2 versions earlier than 22.2R3-S2;
  *  22.3 versions earlier than 22.3R3-S1;
  *  22.4 versions earlier than 22.4R2-S2, 22.4R3;
  *  23.1 versions earlier than 23.1R2;
  *  23.2 versions earlier than 23.2R1-S2, 23.2R2.&lt;/p&gt;
&lt;p&gt;Juniper Networks Junos OS Evolved&lt;/p&gt;
&lt;p&gt;*  All versions earlier than 21.3R3-S5-EVO;
  *  21.4-EVO versions earlie…&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://cve.radiocsirt.org/vuln/cve-2024-21596</guid>
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