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CVE-2019-0052

SRX Series: srxpfe process crash while JSF/UTM module parses specific HTTP packets

High7.5EPSS 1.8%
Published
Updated
Reserved
Assigned by
juniper

Description

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.

Scores

CVSS scores of CVE-2019-0052, by who scored it
Scored byCVSSScoreVector
juniperCNA (assigner)3.0High7.5CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVDNVD · Modified3.1High7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS (exploitation in 30 days)
1.8% · top 21% of all CVEs (5 Nov 2026)
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.

Weakness

Affected products

  • Juniper Networks · Junos OS

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

What to do

Solution: 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.

Workaround: This issue can be mitigated by enabling HTTP reassembly in the web-filtering configuration: set security utm default-configuration web-filtering http-reassemble

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

References (2)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .