Vulnerability · Published Jan 19, 2022 · Assigned by juniper

CVE-2022-22153SRX Series and MX Series with SPC3: A high percentage of fragments might lead to high latency or packet drops

High 7.5

In plain English

A high-severity resource allocation without limits in Junos OS from Juniper Networks. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 61% of all known vulnerabilities).

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)0.9%top 39.2% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

An Insufficient Algorithmic Complexity combined with an Allocation of Resources Without Limits or Throttling vulnerability in the flow processing daemon (flowd) of Juniper Networks Junos OS on SRX Series and MX Series with SPC3 allows an unauthenticated network attacker to cause latency in transit packet processing and even packet loss. If transit traffic includes a significant percentage (> 5%) of fragmented packets which need to be reassembled, high latency or packet drops might be observed. This issue affects Juniper Networks Junos OS on SRX Series, MX Series with SPC3: All versions prior to 18.2R3; 18.3 versions prior to 18.3R3; 18.4 versions prior to 18.4R2-S9, 18.4R3; 19.1 versions prior to 19.1R2; 19.2 versions prior to 19.2R1-S1, 19.2R2.

Affected products (as reported)

Vendor	Product	Versions
Juniper Networks	Junos OS	unspecified – before 18.2R318.3 – before 18.3R318.4 – before 18.4R2-S9, 18.4R319.1 – before 19.1R219.2 – before 19.2R1-S1, 19.2R2

Weakness: CWE-407, CWE-770 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

https://kb.juniper.net/JSA11261 x_refsource_CONFIRM