CVE-2017-10621: Junos OS: Denial of service vulnerability in telnetd
First published: Fri Oct 13 2017(Updated: )
A denial of service vulnerability in telnetd service on Juniper Networks Junos OS allows remote unauthenticated attackers to cause a denial of service. Affected Junos OS releases are: 12.1X46 prior to 12.1X46-D71; 12.3X48 prior to 12.3X48-D50; 14.1 prior to 14.1R8-S5, 14.1R9; 14.1X53 prior to 14.1X53-D50; 14.2 prior to 14.2R7-S9, 14.2R8; 15.1 prior to 15.1F2-S16, 15.1F5-S7, 15.1F6-S6, 15.1R5-S2, 15.1R6; 15.1X49 prior to 15.1X49-D90; 15.1X53 prior to 15.1X53-D47; 16.1 prior to 16.1R4-S1, 16.1R5; 16.2 prior to 16.2R1-S3, 16.2R2;
Credit: sirt@juniper.net
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Juniper Junos | =12.1x45 | |
| Juniper Junos | =12.3x48 | |
| Juniper Junos | =14.1 | |
| Juniper Junos | =14.1x53 | |
| Juniper Junos | =14.2 | |
| Juniper Junos | =15.1 | |
| Juniper Junos | =15.1x49 | |
| Juniper Junos | =15.1x53 | |
| Juniper Junos | =16.1 | |
| Juniper Junos | =16.2 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2017-10621?
CVE-2017-10621 has a severity rating of medium due to its potential to cause denial of service.
What systems are affected by CVE-2017-10621?
CVE-2017-10621 affects specific versions of Juniper Networks Junos OS, including 12.1X46 prior to 12.1X46-D71 and several others listed in the vulnerability details.
How do I fix CVE-2017-10621?
To fix CVE-2017-10621, update your Junos OS to the recommended versions that contain the security fix.
Can CVE-2017-10621 be exploited remotely?
Yes, CVE-2017-10621 can be exploited remotely by unauthenticated attackers to trigger a denial of service.
What type of vulnerability is CVE-2017-10621?
CVE-2017-10621 is classified as a denial of service vulnerability impacting the telnetd service on Junos OS.
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- vendor/juniper
- canonical/juniper junos
- version/juniper junos/12.1x45
- version/juniper junos/12.3x48
- version/juniper junos/14.1
- version/juniper junos/14.1x53
- version/juniper junos/14.2
- version/juniper junos/15.1
- version/juniper junos/15.1x49
- version/juniper junos/15.1x53
- version/juniper junos/16.1
- version/juniper junos/16.2