high
7.5
CWE
755
Advisory Published
Updated

CVE-2019-0051: SRX5000 Series: Denial of Service vulnerability in SSL-Proxy feature.

First published: Wed Oct 09 2019(Updated: )

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.

Credit: sirt@juniper.net

Affected SoftwareAffected VersionHow to fix
Juniper JUNOS=12.3x48
Juniper JUNOS=12.3x48-d10
Juniper JUNOS=12.3x48-d15
Juniper JUNOS=12.3x48-d20
Juniper JUNOS=12.3x48-d25
Juniper JUNOS=12.3x48-d30
Juniper JUNOS=12.3x48-d35
Juniper JUNOS=12.3x48-d40
Juniper JUNOS=12.3x48-d45
Juniper JUNOS=12.3x48-d50
Juniper JUNOS=12.3x48-d55
Juniper JUNOS=12.3x48-d60
Juniper JUNOS=12.3x48-d65
Juniper JUNOS=12.3x48-d70
Juniper JUNOS=12.3x48-d75
Juniper JUNOS=12.3x48-d80
Juniper SRX5400
juniper srx5600
Juniper SRX5800
Juniper JUNOS=15.1x49
Juniper JUNOS=15.1x49-d10
Juniper JUNOS=15.1x49-d100
Juniper JUNOS=15.1x49-d110
Juniper JUNOS=15.1x49-d120
Juniper JUNOS=15.1x49-d130
Juniper JUNOS=15.1x49-d140
Juniper JUNOS=15.1x49-d150
Juniper JUNOS=15.1x49-d160
Juniper JUNOS=15.1x49-d170
Juniper JUNOS=15.1x49-d20
Juniper JUNOS=15.1x49-d30
Juniper JUNOS=15.1x49-d35
Juniper JUNOS=15.1x49-d40
Juniper JUNOS=15.1x49-d45
Juniper JUNOS=15.1x49-d50
Juniper JUNOS=15.1x49-d55
Juniper JUNOS=15.1x49-d60
Juniper JUNOS=15.1x49-d65
Juniper JUNOS=15.1x49-d70
Juniper JUNOS=15.1x49-d75
Juniper JUNOS=15.1x49-d80
Juniper JUNOS=15.1x49-d90
Juniper JUNOS=17.3
Juniper JUNOS=17.3-r2
Juniper JUNOS=17.3-r2-s1
Juniper JUNOS=17.3-r2-s2
Juniper JUNOS=17.3-r3-s1
Juniper JUNOS=17.3-r3-s2
Juniper JUNOS=17.3-r3-s3
Juniper JUNOS=17.3-r3-s4
Juniper JUNOS=17.3-r3-s5
Juniper JUNOS=17.3-r3-s6
Juniper JUNOS=17.4
Juniper JUNOS=17.4-r1
Juniper JUNOS=17.4-r1-s1
Juniper JUNOS=17.4-r1-s2
Juniper JUNOS=17.4-r1-s4
Juniper JUNOS=17.4-r1-s6
Juniper JUNOS=17.4-r1-s7
Juniper JUNOS=17.4-r2
Juniper JUNOS=17.4-r2-s1
Juniper JUNOS=17.4-r2-s3
Juniper JUNOS=17.4-r2-s4
Juniper JUNOS=17.4-r2-s5
Juniper JUNOS=18.1
Juniper JUNOS=18.1-r2
Juniper JUNOS=18.1-r2-s1
Juniper JUNOS=18.1-r2-s2
Juniper JUNOS=18.1-r2-s4
Juniper JUNOS=18.1-r3
Juniper JUNOS=18.1-r3-s2
Juniper JUNOS=18.1-r3-s3
Juniper JUNOS=18.1-r3-s4
Juniper JUNOS=18.1-r3-s5
Juniper JUNOS=18.1-r3-s6
Juniper JUNOS=18.1-r3-s7
Juniper JUNOS=18.2
Juniper JUNOS=18.2-r1-s5
Juniper JUNOS=18.2-r2-s1
Juniper JUNOS=18.2-r2-s2
Juniper JUNOS=18.2-r2-s3
Juniper JUNOS=18.2-r2-s4
Juniper JUNOS=18.3
Juniper JUNOS=18.3-r1
Juniper JUNOS=18.3-r1-s1
Juniper JUNOS=18.3-r1-s2
Juniper JUNOS=18.3-r1-s3
Juniper JUNOS=18.4
Juniper JUNOS=18.4-r1
Juniper JUNOS=18.4-r1-s2
Juniper JUNOS=19.1
Juniper JUNOS=19.1-r1
Juniper JUNOS=19.1-r1-s1
Juniper JUNOS=19.1-r1-s2
Juniper JUNOS=19.1-r1-s3

Remedy

The following software releases have been updated to resolve this specific issue: 12.3X48-D85, 15.1X49-D180, 17.3R3-S7 (pending), 17.4R2-S6, 17.4R3, 18.1R3-S8 (pending), 18.2R3, 18.3R2, 18.4R2, 19.1R2, 19.2R1, and all subsequent releases.

Never miss a vulnerability like this again

Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.

Read MoreStart Free Trial

Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2019-0051?

    The severity of CVE-2019-0051 is classified as high due to its potential for causing denial of service conditions.

  • How do I fix CVE-2019-0051?

    To fix CVE-2019-0051, update the Juniper JUNOS software to a version that addresses the vulnerability as outlined in the advisories.

  • Which versions of Junos are affected by CVE-2019-0051?

    CVE-2019-0051 affects specific versions of Junos, including 12.3x48 and certain versions within the 15.1x49 and 17.x releases.

  • What types of devices are impacted by CVE-2019-0051?

    CVE-2019-0051 impacts Juniper SRX devices that utilize the SSL-Proxy feature.

  • Can CVE-2019-0051 be exploited remotely?

    Yes, CVE-2019-0051 can be exploited remotely by SSL/TLS servers to crash the flowd daemon.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2025 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203