CVE-2024-21616
Assigner: juniper
Published: 2024-01-12T00:56:20.566Z
State: PUBLISHED
affected: defaultStatus: unaffected
platforms: MX Series
SRX Series
product: Junos OS
vendor: Juniper Networks
versions: lessThan: 21.2R3-S6
status: affected
version: 0
versionType: semver
lessThan: 21.3R3-S5
status: affected
version: 21.3
versionType: semver
lessThan: 21.4R3-S5
status: affected
version: 21.4
versionType: semver
lessThan: 22.1R3-S4
status: affected
version: 22.1
versionType: semver
lessThan: 22.2R3-S3
status: affected
version: 22.2
versionType: semver
lessThan: 22.3R3-S1
status: affected
version: 22.3
versionType: semver
lessThan: 22.4R2-S2, 22.4R3
status: affected
version: 22.4
versionType: semver
lessThan: 23.2R1-S1, 23.2R2
status: affected
version: 23.2
versionType: semver
configurations: supportingMedia: base64: no
type: text/html
value: <p>To be affected the SIP ALG needs to be enabled, either implicitly / by default or by way of configuration.</p><p>Please verify on SRX with:</p><code>  user@host&gt; show security alg status | match sip</code><br/><code>  SIP : Enabled</code><br/><p>Please verify on MX whether the following is configured:</p><code>  user@host&gt; show security alg status | match sip</code><br/><code>  SIP : Enabled</code><br/><code>  [services ... rule &lt;rule-name&gt; (term &lt;term-name&gt; ) from/match application/application-set &lt;name&gt;]</code><br/><p>where either</p><code>  a. name = junos-sip</code><br/><p>or an application or application-set refers to SIP:</p><code>  b. [applications application &lt;name&gt; application-protocol sip]</code><br/><p>or</p><code>  c. [applications application-set &lt;name&gt; application junos-sip]</code><br/>
value: To be affected the SIP ALG needs to be enabled, either implicitly / by default or by way of configuration.

Please verify on SRX with:

  user@host> show security alg status | match sip
  SIP : Enabled
Please verify on MX whether the following is configured:

  user@host> show security alg status | match sip
  SIP : Enabled
  [services ... rule <rule-name> (term <term-name> ) from/match application/application-set <name>]
where either

  a. name = junos-sip
or an application or application-set refers to SIP:

  b. [applications application <name> application-protocol sip]
or

  c. [applications application-set <name> application junos-sip]

datePublic: 2024-01-10T17:00:00.000Z
descriptions: supportingMedia: base64: no
type: text/html
value: 

<p>An Improper Validation of Syntactic Correctness of Input vulnerability in Packet Forwarding Engine (PFE) of Juniper Networks Junos OS allows an unauthenticated, network-based attacker to cause Denial of Service (DoS).</p><p>On all Junos OS MX Series and SRX Series platforms, when SIP ALG is enabled, and a specific SIP packet is received and processed, NAT IP allocation fails for genuine traffic, which causes Denial of Service (DoS). Continuous receipt of this specific SIP ALG packet will cause a sustained DoS condition.</p><p>NAT IP usage can be monitored by running the following command.</p><code>user@srx&gt; show security nat resource-usage source-pool &lt;source_pool_name&gt;</code><br><p></p><code>Pool name: source_pool_name</code><br><code>..</code><br><code>Address Factor-index Port-range Used Avail Total Usage</code><br><code>X.X.X.X</code><br><code>0 Single Ports 50258 52342 62464 96% &lt;&lt;&lt;&lt;&lt;</code><br><code>- Alg Ports 0 2048 2048 0%</code><br><p>This issue affects:</p><p>Juniper Networks Junos OS on MX Series and SRX Series</p><p></p><ul><li>All versions earlier than 21.2R3-S6;</li><li>21.3 versions earlier than 21.3R3-S5;</li><li>21.4 versions earlier than 21.4R3-S5;</li><li>22.1 versions earlier than 22.1R3-S4;</li><li>22.2 versions earlier than 22.2R3-S3;</li><li>22.3 versions earlier than 22.3R3-S1;</li><li>22.4 versions earlier than 22.4R2-S2, 22.4R3;</li><li>23.2 versions earlier than 23.2R1-S1, 23.2R2.</li></ul><p></p>


value: 
An Improper Validation of Syntactic Correctness of Input vulnerability in Packet Forwarding Engine (PFE) of Juniper Networks Junos OS allows an unauthenticated, network-based attacker to cause Denial of Service (DoS).

On all Junos OS MX Series and SRX Series platforms, when SIP ALG is enabled, and a specific SIP packet is received and processed, NAT IP allocation fails for genuine traffic, which causes Denial of Service (DoS). Continuous receipt of this specific SIP ALG packet will cause a sustained DoS condition.

NAT IP usage can be monitored by running the following command.

user@srx> show security nat resource-usage source-pool <source_pool_name>


Pool name: source_pool_name
..
Address Factor-index Port-range Used Avail Total Usage
X.X.X.X
0 Single Ports 50258 52342 62464 96% <<<<<
- Alg Ports 0 2048 2048 0%
This issue affects:

Juniper Networks Junos OS on MX Series and SRX Series



  *  All versions earlier than 21.2R3-S6;
  *  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-S3;
  *  22.3 versions earlier than 22.3R3-S1;
  *  22.4 versions earlier than 22.4R2-S2, 22.4R3;
  *  23.2 versions earlier than 23.2R1-S1, 23.2R2.







exploits: supportingMedia: base64: no
type: text/html
value: <p>Juniper SIRT is not aware of any malicious exploitation of this vulnerability.</p>
value: Juniper SIRT is not aware of any malicious exploitation of this vulnerability.


metrics: cvssV3_1: attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: HIGH
baseScore: 7.5
baseSeverity: HIGH
confidentialityImpact: NONE
integrityImpact: NONE
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
version: 3.1
format: CVSS
scenarios: value: GENERAL
problemTypes: descriptions: cweId: CWE-1286
description: CWE-1286: Improper Validation of Syntactic Correctness of Input
type: CWE
descriptions: description: Denial of Service (DoS)
solutions: supportingMedia: base64: no
type: text/html
value: <p>The following software releases have been updated to resolve this specific issue: Junos OS 21.2R3-S6, 21.3R3-S5, 21.4R3-S5, 22.1R3-S4, 22.2R3-S3, 22.3R3-S1, 22.4R2-S2, 22.4R3, 23.2R1-S1, 23.2R2, 23.4R1, and all subsequent releases.</p>
value: The following software releases have been updated to resolve this specific issue: Junos OS 21.2R3-S6, 21.3R3-S5, 21.4R3-S5, 22.1R3-S4, 22.2R3-S3, 22.3R3-S1, 22.4R2-S2, 22.4R3, 23.2R1-S1, 23.2R2, 23.4R1, and all subsequent releases.


source: advisory: JSA75757
defect: 1702811
discovery: USER
timeline: time: 2024-01-10T17:00:00.000Z
value: Initial Publication
title: Junos OS: MX Series and SRX Series: Processing of a specific SIP packet causes NAT IP allocation to fail
workarounds: supportingMedia: base64: no
type: text/html
value: <p>There are no known workarounds for this issue, but it should be considered to disable the SIP ALG if it's not strictly needed.</p>
value: There are no known workarounds for this issue, but it should be considered to disable the SIP ALG if it's not strictly needed.


x_generator: engine: Vulnogram 0.1.0-av217