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THREATINT
PUBLISHED

CVE-2024-30391

Junos OS: MX Series with SPC3, and SRX Series: When IPsec authentication is configured with "hmac-sha-384" and "hmac-sha-512" no authentication of traffic is performed

Reserved:2024-03-26
Published:2024-04-12
Updated:2024-05-16

Description

A Missing Authentication for Critical Function vulnerability in the Packet Forwarding Engine (pfe) of Juniper Networks Junos OS on MX Series with SPC3, and SRX Series allows an unauthenticated network-based attacker to cause limited impact to the integrity or availability of the device. If a device is configured with IPsec authentication algorithm hmac-sha-384 or hmac-sha-512, tunnels are established normally but for traffic traversing the tunnel no authentication information is sent with the encrypted data on egress, and no authentication information is expected on ingress. So if the peer is an unaffected device transit traffic is going to fail in both directions. If the peer is an also affected device transit traffic works, but without authentication, and configuration and CLI operational commands indicate authentication is performed. This issue affects Junos OS: * All versions before 20.4R3-S7, * 21.1 versions before 21.1R3,  * 21.2 versions before 21.2R2-S1, 21.2R3,  * 21.3 versions before 21.3R1-S2, 21.3R2.



MEDIUM: 4.8CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L

Problem types

CWE-306 Missing Authentication for Critical Function

Product status

Default status
unaffected

Any version before 20.4R3-S7
affected

21.1 before 21.1R3
affected

21.2 before 21.2R2-S1, 21.2R3
affected

21.3 before 21.3R1-S2, 21.3R2
affected

References

http://supportportal.juniper.net/JSA79188 vendor-advisory

https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N technical-description

cve.org CVE-2024-30391

nvd.nist.gov CVE-2024-30391

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