Juniper Junos OS prior 22.2R2 on MX/SRX H.323 Packet out-of-bounds write

CVSS Meta Temp Score
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CTI Interest Score
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7.3$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Juniper Junos OS on MX/SRX. Affected by this issue is some unknown functionality of the component H.323 Packet Handler. The manipulation leads to out-of-bounds write. This vulnerability is traded as CVE-2023-22415. It is possible to initiate the attack remotely. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Juniper Junos OS on MX/SRX (Router Operating System) and classified as critical. This issue affects an unknown functionality of the component H.323 Packet Handler. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. Using CWE to declare the problem leads to CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. Impacted is availability. The summary by CVE is:

An Out-of-Bounds Write vulnerability in the H.323 ALG of Juniper Networks Junos OS allows an unauthenticated, network-based attacker to cause Denial of Service (DoS). On all MX Series and SRX Series platform, when H.323 ALG is enabled and specific H.323 packets are received simultaneously, a flow processing daemon (flowd) crash will occur. Continued receipt of these specific packets will cause a sustained Denial of Service (DoS) condition. This issue affects: Juniper Networks Junos OS on MX Series and SRX Series All versions prior to 19.4R3-S10; 20.2 versions prior to 20.2R3-S6; 20.3 versions prior to 20.3R3-S6; 20.4 versions prior to 20.4R3-S5; 21.1 versions prior to 21.1R3-S4; 21.2 versions prior to 21.2R3-S3; 21.3 versions prior to 21.3R3-S3; 21.4 versions prior to 21.4R3; 22.1 versions prior to 22.1R2-S1, 22.1R3; 22.2 versions prior to 22.2R1-S2, 22.2R2.

The weakness was shared 01/13/2023 as JSA70211. It is possible to read the advisory at kb.juniper.net. The identification of this vulnerability is CVE-2023-22415 since 12/27/2022. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/30/2025).

Upgrading to version 19.4R3-S1, 20.2, 20.2R3-S6, 20.3, 20.3R3-S6, 20.4, 20.4R3-S5, 21.1, 21.1R3-S4, 21.2, 21.2R3-S3, 21.3, 21.3R3-S3, 21.4, 21.4R3, 22.1, 22.1R2-S1, 22.1R3, 22.2, 22.2R1-S2 or 22.2R2 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-26578). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.3

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 7.5
CNA Vector (Juniper Networks, Inc.): 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Junos OS 19.4R3-S1/20.2/20.2R3-S6/20.3/20.3R3-S6/20.4/20.4R3-S5/21.1/21.1R3-S4/21.2/21.2R3-S3/21.3/21.3R3-S3/21.4/21.4R3/22.1/22.1R2-S1/22.1R3/22.2/22.2R1-S2/22.2R2

Timelineinfo

12/27/2022 🔍
01/13/2023 +17 days 🔍
01/13/2023 +0 days 🔍
09/30/2025 +991 days 🔍

Sourcesinfo

Vendor: juniper.net

Advisory: JSA70211
Status: Confirmed

CVE: CVE-2023-22415 (🔍)
GCVE (CVE): GCVE-0-2023-22415
GCVE (VulDB): GCVE-100-218219
EUVD: 🔍

Entryinfo

Created: 01/13/2023 09:06
Updated: 09/30/2025 21:11
Changes: 01/13/2023 09:06 (52), 09/30/2025 21:11 (16)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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