Denial of service in SSL Proxy component in Juniper Junos OS



Published: 2021-01-13
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2021-0206
CWE ID CWE-476
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe
Juniper Junos OS
Operating systems & Components / Operating system

Vendor

Security Advisory

This security advisory describes one medium risk vulnerability.

1) NULL pointer dereference

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2021-0206

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error in Juniper Networks Junos OS when SSL Proxy is configured. A remote attacker can send specially crafted packet to the system causing the packet forwarding engine (PFE) to crash and restart

Mitigation

This issue affects Juniper Networks Junos OS on NFX Series and SRX Series:

  • 18.3 versions prior to 18.3R3-S4;
  • 18.4 versions prior to 18.4R3-S1;
  • 19.1 versions prior to 19.1R1-S6, 19.1R2-S2, 19.1R3;
  • 19.2 versions prior to 19.2R1-S2, 19.2R2;
  • 19.3 versions prior to 19.3R2.

Install updates from vendor's website.

Vulnerable software versions

Juniper Junos OS: before 18.3R3-S4, 18.4R3-S1, 19.1R1-S6, 19.1R2-S2, 19.1R3, 19.2R1-S2, 19.2R2, 19.3R2, 19.4R1

CPE External links

https://kb.juniper.net/InfoCenter/index?page=content&id=JSA11096&cat=SIRT_1&actp=LIST

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



###SIDEBAR###