CVE-2024-21603: Junos OS: MX Series: Gathering statistics in a scaled SCU/DCU configuration will lead to a device crash
First published: Fri Jan 12 2024(Updated: )
An Improper Check for Unusual or Exceptional Conditions vulnerability in the kernel of Juniper Network Junos OS on MX Series allows a network based attacker with low privileges to cause a denial of service. If a scaled configuration for Source class usage (SCU) / destination class usage (DCU) (more than 10 route classes) is present and the SCU/DCU statistics are gathered by executing specific SNMP requests or CLI commands, a 'vmcore' for the RE kernel will be seen which leads to a device restart. Continued exploitation of this issue will lead to a sustained DoS. This issue only affects MX Series devices with MPC10, MPC11 or LC9600, and MX304. No other MX Series devices are affected. This issue affects Juniper Networks Junos OS: * All versions earlier than 20.4R3-S9; * 21.2 versions earlier than 21.2R3-S6; * 21.3 versions earlier than 21.3R3-S5; * 21.4 versions earlier than 21.4R3; * 22.1 versions earlier than 22.1R3; * 22.2 versions earlier than 22.2R2; * 22.3 versions earlier than 22.3R2.
Credit: sirt@juniper.net
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Juniper JUNOS | =20.4 | |
| Juniper JUNOS | =20.4-r1 | |
| Juniper JUNOS | =20.4-r1-s1 | |
| Juniper JUNOS | =20.4-r2 | |
| Juniper JUNOS | =20.4-r2-s1 | |
| Juniper JUNOS | =20.4-r2-s2 | |
| Juniper JUNOS | =20.4-r3 | |
| Juniper JUNOS | =20.4-r3-s1 | |
| Juniper JUNOS | =20.4-r3-s2 | |
| Juniper JUNOS | =20.4-r3-s3 | |
| Juniper JUNOS | =20.4-r3-s4 | |
| Juniper JUNOS | =20.4-r3-s5 | |
| Juniper JUNOS | =20.4-r3-s6 | |
| Juniper JUNOS | =20.4-r3-s7 | |
| Juniper JUNOS | =20.4-r3-s8 | |
| Juniper JUNOS | =21.2 | |
| Juniper JUNOS | =21.2-r1 | |
| Juniper JUNOS | =21.2-r1-s1 | |
| Juniper JUNOS | =21.2-r1-s2 | |
| Juniper JUNOS | =21.2-r2 | |
| Juniper JUNOS | =21.2-r2-s1 | |
| Juniper JUNOS | =21.2-r2-s2 | |
| Juniper JUNOS | =21.2-r3 | |
| Juniper JUNOS | =21.2-r3-s1 | |
| Juniper JUNOS | =21.2-r3-s2 | |
| Juniper JUNOS | =21.2-r3-s3 | |
| Juniper JUNOS | =21.2-r3-s4 | |
| Juniper JUNOS | =21.2-r3-s5 | |
| Juniper JUNOS | =21.3 | |
| Juniper JUNOS | =21.3-r1 | |
| Juniper JUNOS | =21.3-r1-s1 | |
| Juniper JUNOS | =21.3-r1-s2 | |
| Juniper JUNOS | =21.3-r2 | |
| Juniper JUNOS | =21.3-r2-s1 | |
| Juniper JUNOS | =21.3-r2-s2 | |
| Juniper JUNOS | =21.3-r3 | |
| Juniper JUNOS | =21.3-r3-s1 | |
| Juniper JUNOS | =21.3-r3-s2 | |
| Juniper JUNOS | =21.3-r3-s3 | |
| Juniper JUNOS | =21.3-r3-s4 | |
| Juniper JUNOS | =21.4 | |
| Juniper JUNOS | =21.4-r1 | |
| Juniper JUNOS | =21.4-r1-s1 | |
| Juniper JUNOS | =21.4-r1-s2 | |
| Juniper JUNOS | =21.4-r2 | |
| Juniper JUNOS | =21.4-r2-s1 | |
| Juniper JUNOS | =21.4-r2-s2 | |
| Juniper JUNOS | =22.1 | |
| Juniper JUNOS | =22.1-r1 | |
| Juniper JUNOS | =22.1-r1-s1 | |
| Juniper JUNOS | =22.1-r1-s2 | |
| Juniper JUNOS | =22.1-r2 | |
| Juniper JUNOS | =22.1-r2-s1 | |
| Juniper JUNOS | =22.1-r2-s2 | |
| Juniper JUNOS | =22.2 | |
| Juniper JUNOS | =22.2-r1 | |
| Juniper JUNOS | =22.2-r1-s1 | |
| Juniper JUNOS | =22.2-r1-s2 | |
| Juniper JUNOS | =22.3 | |
| Juniper JUNOS | =22.3-r1 | |
| Juniper JUNOS | =22.3-r1-s1 | |
| Juniper JUNOS | =22.3-r1-s2 |
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Reference Links
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- vendor/juniper
- canonical/juniper junos
- version/juniper junos/20.4
- version/juniper junos/20.4-r1
- version/juniper junos/20.4-r1-s1
- version/juniper junos/20.4-r2
- version/juniper junos/20.4-r2-s1
- version/juniper junos/20.4-r2-s2
- version/juniper junos/20.4-r3
- version/juniper junos/20.4-r3-s1
- version/juniper junos/20.4-r3-s2
- version/juniper junos/20.4-r3-s3
- version/juniper junos/20.4-r3-s4
- version/juniper junos/20.4-r3-s5
- version/juniper junos/20.4-r3-s6
- version/juniper junos/20.4-r3-s7
- version/juniper junos/20.4-r3-s8
- version/juniper junos/21.2
- version/juniper junos/21.2-r1
- version/juniper junos/21.2-r1-s1
- version/juniper junos/21.2-r1-s2
- version/juniper junos/21.2-r2
- version/juniper junos/21.2-r2-s1
- version/juniper junos/21.2-r2-s2
- version/juniper junos/21.2-r3
- version/juniper junos/21.2-r3-s1
- version/juniper junos/21.2-r3-s2
- version/juniper junos/21.2-r3-s3
- version/juniper junos/21.2-r3-s4
- version/juniper junos/21.2-r3-s5
- version/juniper junos/21.3
- version/juniper junos/21.3-r1
- version/juniper junos/21.3-r1-s1
- version/juniper junos/21.3-r1-s2
- version/juniper junos/21.3-r2
- version/juniper junos/21.3-r2-s1
- version/juniper junos/21.3-r2-s2
- version/juniper junos/21.3-r3
- version/juniper junos/21.3-r3-s1
- version/juniper junos/21.3-r3-s2
- version/juniper junos/21.3-r3-s3
- version/juniper junos/21.3-r3-s4
- version/juniper junos/21.4
- version/juniper junos/21.4-r1
- version/juniper junos/21.4-r1-s1
- version/juniper junos/21.4-r1-s2
- version/juniper junos/21.4-r2
- version/juniper junos/21.4-r2-s1
- version/juniper junos/21.4-r2-s2
- version/juniper junos/22.1
- version/juniper junos/22.1-r1
- version/juniper junos/22.1-r1-s1
- version/juniper junos/22.1-r1-s2
- version/juniper junos/22.1-r2
- version/juniper junos/22.1-r2-s1
- version/juniper junos/22.1-r2-s2
- version/juniper junos/22.2
- version/juniper junos/22.2-r1
- version/juniper junos/22.2-r1-s1
- version/juniper junos/22.2-r1-s2
- version/juniper junos/22.3
- version/juniper junos/22.3-r1
- version/juniper junos/22.3-r1-s1
- version/juniper junos/22.3-r1-s2