Read the docs
TI-2023-08670 Aliases CVE-2023-22410GHSA-277j-7gg4-fp2x

Memory leak in Juniper Junos OS

Priority LOW 34CWE-401Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-401.

Summary

A Missing Release of Memory after Effective Lifetime vulnerability in the Juniper Networks Junos OS on MX Series platforms with MPC10/MPC11 line cards, allows an unauthenticated adjacent attacker to cause a Denial of Service (DoS). Devices are only vulnerable when the Suspicious Control Flow Detection (scfd) feature is enabled. Upon enabling this specific feature, an attacker sending specific traffic is causing memory to be allocated dynamically and it is not freed. Memory is not freed even after deactivating this feature. Sustained processing of such traffic will eventually lead to an out of memory condition that prevents all services from continuing to function, and requires a manual restart to recover. The FPC memory usage can be monitored using the CLI command "show chassis fpc". On running the above command, the memory of AftDdosScfdFlow can be observed to detect the memory leak. This issue affects Juniper Networks Junos OS on MX Series: All versions prior to 20.2R3-S5; 20.3 version 20.3R1 and later versions.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00789 56th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed Junos OS (Juniper Networks): 20.2R3-S5

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
JuniperJunos OSbefore 20.2R3-S5; 20.3R1 and later20.2R3-S5Patch availableCNA
  • Junos OS VendorJuniper Affected before 20.2R3-S5; 20.3R1 and later Fixed in 20.2R3-S5 Patch available CNA

CPE configurations NVD · 45

CPEVersionsRoleVendor
cpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:*before 20.2VulnerableJuniper
cpe:2.3:o:juniper:junos:20.2:-:*:*:*:*:*:*20.2VulnerableJuniper
cpe:2.3:o:juniper:junos:20.2:r1:*:*:*:*:*:*20.2 r1VulnerableJuniper
cpe:2.3:o:juniper:junos:20.2:r1-s1:*:*:*:*:*:*20.2 r1-s1VulnerableJuniper
cpe:2.3:o:juniper:junos:20.2:r1-s2:*:*:*:*:*:*20.2 r1-s2VulnerableJuniper
cpe:2.3:o:juniper:junos:20.2:r1-s3:*:*:*:*:*:*20.2 r1-s3VulnerableJuniper
cpe:2.3:o:juniper:junos:20.2:r2:*:*:*:*:*:*20.2 r2VulnerableJuniper
cpe:2.3:o:juniper:junos:20.2:r2-s1:*:*:*:*:*:*20.2 r2-s1VulnerableJuniper
cpe:2.3:o:juniper:junos:20.2:r2-s2:*:*:*:*:*:*20.2 r2-s2VulnerableJuniper
cpe:2.3:o:juniper:junos:20.2:r2-s3:*:*:*:*:*:*20.2 r2-s3VulnerableJuniper
  • cpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:* Versions before 20.2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:20.2:-:*:*:*:*:*:* Versions 20.2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:20.2:r1:*:*:*:*:*:* Versions 20.2 r1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:20.2:r1-s1:*:*:*:*:*:* Versions 20.2 r1-s1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:20.2:r1-s2:*:*:*:*:*:* Versions 20.2 r1-s2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:20.2:r1-s3:*:*:*:*:*:* Versions 20.2 r1-s3 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:20.2:r2:*:*:*:*:*:* Versions 20.2 r2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:20.2:r2-s1:*:*:*:*:*:* Versions 20.2 r2-s1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:20.2:r2-s2:*:*:*:*:*:* Versions 20.2 r2-s2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:20.2:r2-s3:*:*:*:*:*:* Versions 20.2 r2-s3 Vulnerable ·Juniper
Show 35 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:juniper:junos:20.2:r3:*:*:*:*:*:*20.2 r3VulnerableJuniper
cpe:2.3:o:juniper:junos:20.2:r3-s1:*:*:*:*:*:*20.2 r3-s1VulnerableJuniper
cpe:2.3:o:juniper:junos:20.2:r3-s2:*:*:*:*:*:*20.2 r3-s2VulnerableJuniper
cpe:2.3:o:juniper:junos:20.2:r3-s3:*:*:*:*:*:*20.2 r3-s3VulnerableJuniper
cpe:2.3:o:juniper:junos:20.2:r3-s4:*:*:*:*:*:*20.2 r3-s4VulnerableJuniper
cpe:2.3:o:juniper:junos:20.3:-:*:*:*:*:*:*20.3VulnerableJuniper
cpe:2.3:o:juniper:junos:20.3:r1:*:*:*:*:*:*20.3 r1VulnerableJuniper
cpe:2.3:o:juniper:junos:20.3:r1-s1:*:*:*:*:*:*20.3 r1-s1VulnerableJuniper
cpe:2.3:o:juniper:junos:20.3:r1-s2:*:*:*:*:*:*20.3 r1-s2VulnerableJuniper
cpe:2.3:o:juniper:junos:20.3:r2:*:*:*:*:*:*20.3 r2VulnerableJuniper
cpe:2.3:o:juniper:junos:20.3:r2-s1:*:*:*:*:*:*20.3 r2-s1VulnerableJuniper
cpe:2.3:o:juniper:junos:20.3:r3:*:*:*:*:*:*20.3 r3VulnerableJuniper
cpe:2.3:o:juniper:junos:20.3:r3-s1:*:*:*:*:*:*20.3 r3-s1VulnerableJuniper
cpe:2.3:o:juniper:junos:20.3:r3-s2:*:*:*:*:*:*20.3 r3-s2VulnerableJuniper
cpe:2.3:o:juniper:junos:20.3:r3-s3:*:*:*:*:*:*20.3 r3-s3VulnerableJuniper
cpe:2.3:o:juniper:junos:20.3:r3-s4:*:*:*:*:*:*20.3 r3-s4VulnerableJuniper
cpe:2.3:o:juniper:junos:20.3:r3-s5:*:*:*:*:*:*20.3 r3-s5VulnerableJuniper
cpe:2.3:o:juniper:junos:20.3:r3-s6:*:*:*:*:*:*20.3 r3-s6VulnerableJuniper
cpe:2.3:h:juniper:mx10:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
cpe:2.3:h:juniper:mx10000:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
cpe:2.3:h:juniper:mx10003:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
cpe:2.3:h:juniper:mx10008:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
cpe:2.3:h:juniper:mx10016:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
cpe:2.3:h:juniper:mx104:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
cpe:2.3:h:juniper:mx150:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
cpe:2.3:h:juniper:mx2008:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
cpe:2.3:h:juniper:mx2010:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
cpe:2.3:h:juniper:mx2020:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
cpe:2.3:h:juniper:mx204:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
cpe:2.3:h:juniper:mx240:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
cpe:2.3:h:juniper:mx40:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
cpe:2.3:h:juniper:mx480:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
cpe:2.3:h:juniper:mx5:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
cpe:2.3:h:juniper:mx80:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
cpe:2.3:h:juniper:mx960:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
  • cpe:2.3:o:juniper:junos:20.2:r3:*:*:*:*:*:* Versions 20.2 r3 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:20.2:r3-s1:*:*:*:*:*:* Versions 20.2 r3-s1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:20.2:r3-s2:*:*:*:*:*:* Versions 20.2 r3-s2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:20.2:r3-s3:*:*:*:*:*:* Versions 20.2 r3-s3 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:20.2:r3-s4:*:*:*:*:*:* Versions 20.2 r3-s4 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:20.3:-:*:*:*:*:*:* Versions 20.3 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:20.3:r1:*:*:*:*:*:* Versions 20.3 r1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:20.3:r1-s1:*:*:*:*:*:* Versions 20.3 r1-s1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:20.3:r1-s2:*:*:*:*:*:* Versions 20.3 r1-s2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:20.3:r2:*:*:*:*:*:* Versions 20.3 r2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:20.3:r2-s1:*:*:*:*:*:* Versions 20.3 r2-s1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:20.3:r3:*:*:*:*:*:* Versions 20.3 r3 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:20.3:r3-s1:*:*:*:*:*:* Versions 20.3 r3-s1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:20.3:r3-s2:*:*:*:*:*:* Versions 20.3 r3-s2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:20.3:r3-s3:*:*:*:*:*:* Versions 20.3 r3-s3 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:20.3:r3-s4:*:*:*:*:*:* Versions 20.3 r3-s4 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:20.3:r3-s5:*:*:*:*:*:* Versions 20.3 r3-s5 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:20.3:r3-s6:*:*:*:*:*:* Versions 20.3 r3-s6 Vulnerable ·Juniper
  • cpe:2.3:h:juniper:mx10:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
  • cpe:2.3:h:juniper:mx10000:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
  • cpe:2.3:h:juniper:mx10003:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
  • cpe:2.3:h:juniper:mx10008:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
  • cpe:2.3:h:juniper:mx10016:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
  • cpe:2.3:h:juniper:mx104:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
  • cpe:2.3:h:juniper:mx150:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
  • cpe:2.3:h:juniper:mx2008:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
  • cpe:2.3:h:juniper:mx2010:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
  • cpe:2.3:h:juniper:mx2020:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
  • cpe:2.3:h:juniper:mx204:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
  • cpe:2.3:h:juniper:mx240:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
  • cpe:2.3:h:juniper:mx40:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
  • cpe:2.3:h:juniper:mx480:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
  • cpe:2.3:h:juniper:mx5:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
  • cpe:2.3:h:juniper:mx80:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
  • cpe:2.3:h:juniper:mx960:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper

Remediation

  • Fix · CNA Junos OS (Juniper Networks) Fixed in 20.2R3-S5

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-22410
  2. 2026-10-03 Alias added: GHSA-277j-7gg4-fp2x

References

Exploit 1

  • TI-2023-18638 Junos OS: EX and SRX Series: A PHP vulnerability in J-Web allows an unauthenticated to… KEVCVSS 3.1CRITICAL 9.8
  • TI-2020-01585 Out of Cycle Security Advisory: Junos OS: Security vulnerability in J-Web and web based (HTTP/HTTPS) services KEVCVSS 3.1CRITICAL 9.8
  • TI-2015-04610 Assertion failure in ISC BIND named via TKEY queries KEVCVSS 3.1HIGH 7.5
  • TI-2025-15550 Junos OS: An local attacker with shell access can execute arbitrary code KEVCVSS 4.0MEDIUM 6.7
  • TI-2023-18644 Junos OS: SRX Series: A vulnerability in J-Web allows an unauthenticated attacker to upload and download arbitrary files KEVCVSS 3.1MEDIUM 5.3
  • TI-2023-18640 Junos OS: EX Series: A vulnerability in J-Web allows an unauthenticated attacker to upload arbitrary files KEVCVSS 3.1MEDIUM 5.3
See all 792 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences