QID 43930

Date Published: 2022-10-20

QID 43930: Juniper JUNOS Session Initiation Protocol (SIP) Application Layer Gateway (ALG) Denial of Service (DoS) Vulnerability (JSA11284)

Juniper Junos is the network operating system used in Juniper Networks hardware systems.

A Stack-based Buffer Overflow vulnerability in the flow processing daemon (flowd) of Juniper Networks Junos OS on MX Series and SRX series allows an unauthenticated networked attacker to cause a flowd crash and thereby a Denial of Service (DoS). Continued receipt of these specific packets will cause a sustained Denial of Service condition.

Making this QID as practice as we cannot add SIP ALG enabled check in signature.
Affected Junos OS versions:
20.4 versions prior to 20.4R3-S2
21.1 versions prior to 21.1R2-S1, 21.1R3
21.2 versions prior to 21.2R2
21.3 versions prior to 21.3R2

NOTE:
This vulnerability only affects to MX Series and SRX series.

QID detection logic: (Authenticated)
It checks for vulnerable Junos OS version.

Successful exploitation of this vulnerability may cause a flowd crash and thereby a Denial of Service (DoS)

CVSS V3 rated as High - 7.5 severity.

CVSS V2 rated as Medium - 5 severity.

Solution

The following software releases have been updated to resolve this specific issue For more information please visit JSA11284

Vendor References

JSA11284 - supportportal.juniper.net/s/article/2022-01-Security-Bulletin-MX-Series-and-SRX-series-Flowd-core-observed-if-the-SIP-ALG-is-enabled-and-a-specific-Session-Initiation-Protocol-SIP-packet-is-received-CVE-2022-22178?language=en_US

CVEs related to QID 43930

CVE-2022-22178 |

Software Advisories

Advisory ID	Software	Component	Link
JSA11284			kb.juniper.net/JSA11284

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