#VU49560 Input validation error in Junos OS Evolved and Juniper Junos OS


Published: 2021-01-15

Vulnerability identifier: #VU49560

Vulnerability risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-0208

CWE-ID: CWE-20

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
Junos OS Evolved
Operating systems & Components / Operating system
Juniper Junos OS
Operating systems & Components / Operating system

Vendor: Juniper Networks, Inc.

Description

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to insufficient validation of user-supplied input in the Routing Protocol Daemon (RPD) service. A remote attacker can send specially crafted RSVP packets when bidirectional LSPs and perform a denial of service attack or execute arbitrary code on the system.

Mitigation

Install updates from vendor's website.

This issue affects:

Juniper Networks Junos OS:

  • All versions prior to 17.3R3-S10 except 15.1X49-D240 for SRX series;
  • 17.4 versions prior to 17.4R3-S2;
  • 18.1 versions prior to 18.1R3-S10;
  • 18.2 versions prior to 18.2R2-S7, 18.2R3-S4;
  • 18.3 versions prior to 18.3R3-S2;
  • 18.4 versions prior to 18.4R1-S8, 18.4R2-S6, 18.4R3-S2;
  • 19.1 versions prior to 19.1R1-S5, 19.1R3-S3;
  • 19.2 versions prior to 19.2R3;
  • 19.3 versions prior to 19.3R2-S5, 19.3R3;
  • 19.4 versions prior to 19.4R2-S2, 19.4R3-S1;
  • 20.1 versions prior to 20.1R1-S4, 20.1R2;
  • 15.1X49 versions prior to 15.1X49-D240 on SRX Series.

Juniper Networks Junos OS Evolved:

  • 19.3 versions prior to 19.3R2-S5-EVO;
  • 19.4 versions prior to 19.4R2-S2-EVO;
  • 20.1 versions prior to 20.1R1-S4-EVO.

Vulnerable software versions

Junos OS Evolved: 20.1 - 20.1R1-S2-EVO, 19.4

Juniper Junos OS: 18.4 - 18.4R3-S1, 19.4 - 19.4R3, 15.1 - 15.1R7-S13, 15.1F - 15.1F7-S2, 15.1X49 - 15.1X49-D230, 19.3 - 19.3R2-S7, 19.1 - 19.1R3-S2, 17.3 - 17.3R3-S9, 20.1 - 20.1R1-S3, 20.2, 19.2 - 19.2R2-S1, 18.3 - 18.3R3-S1, 18.2 - 18.2R3-S3, 18.1 - 18.1R3-S9, 17.4 - 17.4R3-S1


External links
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA11098&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 local network (LAN).

Is there known malware, which exploits this vulnerability?

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


Latest bulletins with this vulnerability