Описание
An Improper Handling of Exceptional Conditions vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a logically adjacent downstream RSVP neighbor to cause kernel memory exhaustion, leading to a kernel crash, resulting in a Denial of Service (DoS).
The kernel memory leak and eventual crash will be seen when the downstream RSVP neighbor has a persistent error which will not be corrected.
System kernel memory can be monitored through the use of the 'show system statistics kernel memory' command as shown below:
user@router> show system statistics kernel memory Memory Size (kB) Percentage When Active 753092 18.4% Now Inactive 574300 14.0% Now Wired 443236 10.8% Now Cached 1911204 46.6% Now Buf 32768 0.8% Now Free ...
An Improper Handling of Exceptional Conditions vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a logically adjacent downstream RSVP neighbor to cause kernel memory exhaustion, leading to a kernel crash, resulting in a Denial of Service (DoS).
The kernel memory leak and eventual crash will be seen when the downstream RSVP neighbor has a persistent error which will not be corrected.
System kernel memory can be monitored through the use of the 'show system statistics kernel memory' command as shown below:
user@router> show system statistics kernel memory Memory Size (kB) Percentage When Active 753092 18.4% Now Inactive 574300 14.0% Now Wired 443236 10.8% Now Cached 1911204 46.6% Now Buf 32768 0.8% Now Free 385072 9.4% Now Kernel Memory Now Data 312908 7.6% Now Text 2560 0.1% Now ...
This issue affects: Junos OS:
- All versions before 20.4R3-S9,
- from 21.4 before 21.4R3-S5,
- from 22.1 before 22.1R3-S5,
- from 22.2 before 22.2R3-S3,
- from 22.3 before 22.3R3-S2,
- from 22.4 before 22.4R3,
- from 23.2 before 23.2R2;
Junos OS Evolved:
- All versions before 21.4R3-S5-EVO,
- from 22.1-EVO before 22.1R3-S5-EVO,
- from 22.2-EVO before 22.2R3-S3-EVO,
- from 22.3-EVO before 22.3R3-S2-EVO,
- from 22.4-EVO before 22.4R3-EVO,
- from 23.2-EVO before 23.2R2-EVO.
Связанные уязвимости
An Improper Handling of Exceptional Conditions vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a logically adjacent downstream RSVP neighbor to cause kernel memory exhaustion, leading to a kernel crash, resulting in a Denial of Service (DoS). The kernel memory leak and eventual crash will be seen when the downstream RSVP neighbor has a persistent error which will not be corrected. System kernel memory can be monitored through the use of the 'show system kernel memory' command as shown below: user@router> show system kernel memory Real memory total/reserved: 4130268/ 133344 Kbytes kmem map free: 18014398509110220 Kbytes This issue affects: Junos OS: * All versions before 20.4R3-S9, * All versions of 21.2, * from 21.4 before 21.4R3-S5, * from 22.1 before 22.1R3-S5, * from 22.2 before 22.2R3-S3, * from 22.3 before 22.3R3-S2, * from 22.4 before 22.4R3, * from 23.2 before 23.2R2; Junos OS Evolve
Уязвимость реализации протокола RSVP (Resource Reservation Protocol) операционных систем Juniper Networks Junos OS и Junos OS Evolved, позволяющая нарушителю вызвать отказ в обслуживании