Vulnerability identifier: #VU75136

Vulnerability risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-28968

CWE-ID: CWE-789

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Juniper Junos OS
Operating systems & Components / Operating system

Vendor: Juniper Networks, Inc.

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to improperly controlled sequential memory allocation in the Juniper Networks Deep Packet Inspection-Decoder (JDPI-Decoder) Application Signature component. A remote attacker can cause the policies that rely on JDPI-Decoder actions to fail open.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Juniper Junos OS: 21.4R1 - 21.4R3-S2, 21.1 - 21.1R3-S4, 22.2R1 - 22.2R2, 20.2 - 20.2R3-S6, 22.1R1 - 22.1R3, 22.3R1 - 22.3R1-S1, 21.2R1 - 21.2R3-S3, 20.4 - 20.4R3-S5, 19.4 - 19.4R3-S10, 19.4R1 - 19.4R1-S4, 21.3R1 - 21.3R3-S2, 20.1 - 20.1R3-S4, 20.3 - 20.3R3-S6

---

External links
http://supportportal.juniper.net/s/article/2023-04-Security-Bulletin-Junos-OS-SRX-Series-Policies-that-rely-on-JDPI-Decoder-actions-may-fail-open-CVE-2023-28968

---

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.