CVE-2019-0051

SRX5000 Series: Denial of Service vulnerability in SSL-Proxy feature.

HIGH

7.5

CVSS Score

Published: October 9, 2019 at 07:26 PM UTC

Updated: June 17, 2026 at 02:07 AM UTC

4 products affected across 2 vendorsJunosSRX5800SRX5600

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Severity

HIGH7.5

Exploit prediction

EPSS 1%

Description

SSL-Proxy feature on SRX devices fails to handle a hardware resource limitation which can be exploited by remote SSL/TLS servers to crash the flowd daemon. Repeated crashes of the flowd daemon can result in an extended denial of service condition. For this issue to occur, clients protected by the SRX device must initiate a connection to the malicious server. This issue affects: Juniper Networks Junos OS on SRX5000 Series: 12.3X48 versions prior to 12.3X48-D85; 15.1X49 versions prior to 15.1X49-D180; 17.3 versions prior to 17.3R3-S7; 17.4 versions prior to 17.4R2-S6, 17.4R3; 18.1 versions prior to 18.1R3-S8; 18.2 versions prior to 18.2R3; 18.3 versions prior to 18.3R2; 18.4 versions prior to 18.4R2; 19.1 versions prior to 19.1R2.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Junos · Juniper Networks

95%

12.3X48 ≤ v < 12.3X48-D8515.1X49 ≤ v < 15.1X49-D18017.3 ≤ v < 17.3R3-S717.4 ≤ v < 17.4R2-S6, 17.4R318.1 ≤ v < 18.1R3-S818.2 ≤ v < 18.2R318.3 ≤ v < 18.3R218.4 ≤ v < 18.4R219.1 ≤ v < 19.1R212.3X4812.3x4812.3x48 d10 12.3x48 d15 12.3x48 d20 12.3x48 d25 12.3x48 d30 12.3x48 d35 12.3x48 d40 12.3x48 d45 12.3x48 d50 12.3x48 d55 12.3x48 d60 12.3x48 d65 12.3x48 d70 12.3x48 d7512.3x48 d8015.1X4915.1x4915.1x49 d10 15.1x49 d100 15.1x49 d110 15.1x49 d120 15.1x49 d130 15.1x49 d140 15.1x49 d150 15.1x49 d160 15.1x49 d170 15.1x49 d20 15.1x49 d30 15.1x49 d35 15.1x49 d40 15.1x49 d45 15.1x49 d50 15.1x49 d55 15.1x49 d60 15.1x49 d65 15.1x49 d70 15.1x49 d75 15.1x49 d80 15.1x49 d90 17.3 17.3 r2 17.3 r2-s1 17.3 r2-s2 17.3 r3-s1 17.3 r3-s2 17.3 r3-s3 17.3 r3-s4 17.3 r3-s5 17.3 r3-s6 17.4 17.4 r1 17.4 r1-s1 17.4 r1-s2 17.4 r1-s4 17.4 r1-s6 17.4 r1-s7 17.4 r2 17.4 r2-s1 17.4 r2-s3 17.4 r2-s4 17.4 r2-s5 18.1 18.1 r2 18.1 r2-s1 18.1 r2-s2 18.1 r2-s4 18.1 r3 18.1 r3-s2 18.1 r3-s3 18.1 r3-s4 18.1 r3-s5 18.1 r3-s6 18.1 r3-s7 18.2 18.2 r1-s5 18.2 r2-s1 18.2 r2-s2 18.2 r2-s3 18.2 r2-s4 18.3 18.3 r1 18.3 r1-s1 18.3 r1-s2 18.3 r1-s3 18.4 18.4 r1 18.4 r1-s2 19.1 19.1 r1 19.1 r1-s1 19.1 r1-s2 19.1 r1-s3

Affected range stops below 12.3X48-D85, so it looks safe — our inference, not a vendor statement

Affected range stops below 15.1X49-D180, so it looks safe — our inference, not a vendor statement

Affected range stops below 17.3R3-S7, so it looks safe — our inference, not a vendor statement

Affected range stops below 17.4R2-S6, 17.4R3, so it looks safe — our inference, not a vendor statement

Affected range stops below 18.1R3-S8, so it looks safe — our inference, not a vendor statement

Affected range stops below 18.2R3, so it looks safe — our inference, not a vendor statement

Affected range stops below 18.3R2, so it looks safe — our inference, not a vendor statement

Affected range stops below 18.4R2, so it looks safe — our inference, not a vendor statement

Affected range stops below 19.1R2, so it looks safe — our inference, not a vendor statement

juniper-srx5400 (environment) · juniper-srx5600 (environment) · juniper-srx5800 (environment)

Srx5400 · Juniperdevice

80%

All versions

SRX5600 · Juniperdevice

80%

All versions

SRX5800 · Juniperdevice

80%

All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://kb.juniper.net/JSA10973

References (1)

x_refsource_MISCVendor Advisory

Source: [email protected]

https://kb.juniper.net/JSA10973

CVSS

7.5HIGH[email protected]

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: NONE
Integrity: NONE
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-755

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