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2019-07 Security Bulletin: SRX Series: srxpfe process crash while JSF/UTM module parses specific HTTP packets (CVE-2019-0052)

  [JSA10946] Show Article Properties

Product Affected:
This issue affects SRX Series platforms running Junos OS.

The srxpfe process may crash on SRX Series services gateways when the UTM module processes a specific fragmented HTTP packet. The packet is misinterpreted as a regular TCP packet which causes the processor to crash.

This issue affects all SRX Series platforms that support URL-Filtering and have web-filtering enabled.

Affected releases are Juniper Networks Junos OS:

  • 12.3X48 versions prior to 12.3X48-D85 on SRX Series;
  • 15.1X49 versions prior to 15.1X49-D181, 15.1X49-D190 on SRX Series;
  • 17.3 versions on SRX Series;
  • 17.4 versions prior to 17.4R1-S8, 17.4R2-S5, 17.4R3 on SRX Series;
  • 18.1 versions prior to 18.1R3-S6 on SRX Series;
  • 18.2 versions prior to 18.2R2-S1, 18.2R3 on SRX Series;
  • 18.3 versions prior to 18.3R1-S2, 18.3R2 on SRX Series;
  • 18.4 versions prior to 18.4R1-S1, 18.4R2 on SRX Series.

The following SRX Series services gateway web-filtering configuration is required:

security {
  utm {
    default-configuration {
      web-filtering {
    feature-profile {
      web-filtering {

Juniper SIRT is not aware of any malicious exploitation of this vulnerability.

This issue was seen during production usage.

This issue has been assigned CVE-2019-0052.


The following software releases have been updated to resolve this specific issue: 12.3X48-D85, 12.3X48-D90, 15.1X49-D181, 15.1X49-D190, 17.4R1-S8, 17.4R2-S5, 17.4R3, 18.1R3-S6, 18.2R2-S1, 18.2R3, 18.3R1-S2, 18.3R2, 18.4R1-S1, 18.4R2, 19.1R1, 19.2R1, and all subsequent releases.

This issue is being tracked as PR 1406403 which is visible on the Customer Support website.

Note: Juniper SIRT's policy is not to evaluate releases which are beyond End of Engineering (EOE) or End of Life (EOL).


This issue can be mitigated by enabling HTTP reassembly in the web-filtering configuration:

set security utm default-configuration web-filtering http-reassemble
Software Releases, patches and updates are available at
Modification History:
  • ‚Äč2019-07-10: Initial Publication
Related Links:
CVSS Score:
7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Severity Level:
Severity Assessment:
Information for how Juniper Networks uses CVSS can be found at KB 16446 "Common Vulnerability Scoring System (CVSS) and Juniper's Security Advisories."