CVE-2020-1647

Junos OS: SRX Series: Double free vulnerability can lead to DoS or remote code execution due to the processing of a specific HTTP message when ICAP redirect service is enabled

Description

On Juniper Networks SRX Series with ICAP (Internet Content Adaptation Protocol) redirect service enabled, a double free vulnerability can lead to a Denial of Service (DoS) or Remote Code Execution (RCE) due to processing of a specific HTTP message. Continued processing of this specific HTTP message may result in an extended Denial of Service (DoS). The offending HTTP message that causes this issue may originate both from the HTTP server or the client. This issue affects Juniper Networks Junos OS on SRX Series: 18.1 versions prior to 18.1R3-S9; 18.2 versions prior to 18.2R3-S3; 18.3 versions prior to 18.3R2-S4, 18.3R3-S1; 18.4 versions prior to 18.4R2-S5, 18.4R3; 19.1 versions prior to 19.1R2; 19.2 versions prior to 19.2R1-S2, 19.2R2; 19.3 versions prior to 19.3R2. This issue does not affect Juniper Networks Junos OS prior to 18.1R1.

Remediation

Solution:

  • The following software releases have been updated to resolve this specific issue: 18.1R3-S9, 18.2R3-S3, 18.3R2-S4, 18.3R3-S1, 18.4R2-S5, 18.4R3, 19.1R2, 19.2R1-S2, 19.2R2, 19.3R2, 19.4R1, and all subsequent releases.

Workaround:

  • Disable ICAP redirect service otherwise there are no viable workarounds for this issue.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 1.99% Top 20%
Vendor Advisory juniper.net
Affected: Juniper Networks Junos OS
Published at:
Updated at:

References

Link Tags
https://kb.juniper.net/JSA11034 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2020-1647?
CVE-2020-1647 has been scored as a critical severity vulnerability.
How to fix CVE-2020-1647?
To fix CVE-2020-1647: The following software releases have been updated to resolve this specific issue: 18.1R3-S9, 18.2R3-S3, 18.3R2-S4, 18.3R3-S1, 18.4R2-S5, 18.4R3, 19.1R2, 19.2R1-S2, 19.2R2, 19.3R2, 19.4R1, and all subsequent releases.
Is CVE-2020-1647 being actively exploited in the wild?
It is possible that CVE-2020-1647 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-1647?
CVE-2020-1647 affects Juniper Networks Junos OS.
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