CVE-2019-0049: Junos OS: RPD process crashes when BGP peer restarts
First published: Thu Jul 11 2019(Updated: )
On Junos devices with the BGP graceful restart helper mode enabled or the BGP graceful restart mechanism enabled, a certain sequence of BGP session restart on a remote peer that has the graceful restart mechanism enabled may cause the local routing protocol daemon (RPD) process to crash and restart. Repeated crashes of the RPD process can cause prolonged Denial of Service (DoS). Graceful restart helper mode for BGP is enabled by default. No other Juniper Networks products or platforms are affected by this issue. Affected releases are Juniper Networks Junos OS: 16.1 versions prior to 16.1R7-S3; 16.2 versions prior to 16.2R2-S9; 17.1 versions prior to 17.1R3; 17.2 versions prior to 17.2R3; 17.2X75 versions prior to 17.2X75-D105; 17.3 versions prior to 17.3R3-S2; 17.4 versions prior to 17.4R1-S7, 17.4R2-S2, 17.4R3; 18.1 versions prior to 18.1R3-S2; 18.2 versions prior to 18.2R2; 18.2X75 versions prior to 18.2X75-D12, 18.2X75-D30; 18.3 versions prior to 18.3R1-S4, 18.3R2. Junos OS releases prior to 16.1R1 are not affected.
Credit: sirt@juniper.net
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Juniper Junos | =16.1 | |
| Juniper Junos | =16.1-r1 | |
| Juniper Junos | =16.1-r2 | |
| Juniper Junos | =16.1-r3 | |
| Juniper Junos | =16.1-r3-s10 | |
| Juniper Junos | =16.1-r3-s11 | |
| Juniper Junos | =16.1-r4 | |
| Juniper Junos | =16.1-r5 | |
| Juniper Junos | =16.1-r6 | |
| Juniper Junos | =16.2 | |
| Juniper Junos | =16.2-r1 | |
| Juniper Junos | =16.2-r2 | |
| Juniper Junos | =16.2-r2-s1 | |
| Juniper Junos | =16.2-r2-s2 | |
| Juniper Junos | =16.2-r2-s5 | |
| Juniper Junos | =16.2-r2-s6 | |
| Juniper Junos | =16.2-r2-s7 | |
| Juniper Junos | =16.2-r2-s8 | |
| Juniper Junos | =17.1 | |
| Juniper Junos | =17.1-r1 | |
| Juniper Junos | =17.1-r2-s1 | |
| Juniper Junos | =17.1-r2-s10 | |
| Juniper Junos | =17.1-r2-s2 | |
| Juniper Junos | =17.1-r2-s3 | |
| Juniper Junos | =17.1-r2-s4 | |
| Juniper Junos | =17.1-r2-s5 | |
| Juniper Junos | =17.1-r2-s6 | |
| Juniper Junos | =17.1-r2-s7 | |
| Juniper Junos | =17.2 | |
| Juniper Junos | =17.2-r1 | |
| Juniper Junos | =17.2-r1-s2 | |
| Juniper Junos | =17.2-r1-s4 | |
| Juniper Junos | =17.2-r1-s7 | |
| Juniper Junos | =17.2-r2 | |
| Juniper Junos | =17.2-r2-s6 | |
| Juniper Junos | =17.3 | |
| Juniper Junos | =17.3-r1 | |
| Juniper Junos | =17.3-r2 | |
| Juniper Junos | =17.3-r2-s1 | |
| Juniper Junos | =17.3-r2-s2 | |
| Juniper Junos | =17.3-r3-s1 | |
| Juniper Junos | =17.4 | |
| Juniper Junos | =17.4-r1 | |
| Juniper Junos | =17.4-r1-s1 | |
| Juniper Junos | =17.4-r1-s2 | |
| Juniper Junos | =17.4-r1-s4 | |
| Juniper Junos | =17.4-r1-s6 | |
| Juniper Junos | =17.4-r2 | |
| Juniper Junos | =17.4-r2-s1 | |
| Juniper Junos | =18.1 | |
| Juniper Junos | =18.1-r1 | |
| Juniper Junos | =18.1-r2 | |
| Juniper Junos | =18.1-r2-s1 | |
| Juniper Junos | =18.1-r2-s2 | |
| Juniper Junos | =18.1-r3 | |
| Juniper Junos | =18.2 | |
| Juniper Junos | =18.2-r1 | |
| Juniper Junos | =18.2-r1-s3 | |
| Juniper Junos | =18.2-r1-s4 | |
| Juniper Junos | =18.2-r1-s5 | |
| Juniper Junos | =18.2-r2-s1 | |
| Juniper Junos | =18.2x75 | |
| Juniper Junos | =18.2x75-d20 | |
| Juniper Junos | =18.3 | |
| Juniper Junos | =18.3-r1 | |
| Juniper Junos | =18.3-r1-s1 | |
| Juniper Junos | =18.3-r1-s2 | |
| Juniper Junos | =18.3-r1-s3 | |
| Juniper Junos | =17.2x75 | |
| Juniper Junos | =17.2x75 | |
| Juniper Junos | =17.2x75-d102 | |
| Juniper Junos | =17.2x75-d92 |
Remedy
The following software releases have been updated to resolve this specific issue: 16.1R7-S3, 16.2R2-S9, 17.1R3, 17.2R3, 17.2X75-D105, 17.3R3-S2, 17.4R1-S7, 17.4R2-S2, 17.4R3, 18.1R3-S2, 18.2R2, 18.2X75-D12, 18.2X75-D30, 18.3R1-S4, 18.3R2, 18.4R1, and all subsequent releases.
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2019-0049?
CVE-2019-0049 has a medium severity level, which indicates it poses a moderate risk to affected systems.
How do I fix CVE-2019-0049?
To fix CVE-2019-0049, upgrade your Junos devices to the recommended fixed releases as provided in the vendor's security advisory.
Which Junos versions are affected by CVE-2019-0049?
CVE-2019-0049 affects Junos versions 16.1 through 17.4, including various release iterations of each version.
What products are impacted by CVE-2019-0049?
CVE-2019-0049 impacts Juniper's routing devices that have BGP graceful restart features enabled.
Can CVE-2019-0049 be exploited remotely?
Yes, CVE-2019-0049 can potentially be exploited by an attacker on a remote peer that has the BGP graceful restart mechanism enabled.
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- collector/mitre-cve
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- agent/last-modified-date
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- agent/event
- agent/source
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/juniper
- canonical/juniper junos
- version/juniper junos/16.1
- version/juniper junos/16.1-r1
- version/juniper junos/16.1-r2
- version/juniper junos/16.1-r3
- version/juniper junos/16.1-r3-s10
- version/juniper junos/16.1-r3-s11
- version/juniper junos/16.1-r4
- version/juniper junos/16.1-r5
- version/juniper junos/16.1-r6
- version/juniper junos/16.2
- version/juniper junos/16.2-r1
- version/juniper junos/16.2-r2
- version/juniper junos/16.2-r2-s1
- version/juniper junos/16.2-r2-s2
- version/juniper junos/16.2-r2-s5
- version/juniper junos/16.2-r2-s6
- version/juniper junos/16.2-r2-s7
- version/juniper junos/16.2-r2-s8
- version/juniper junos/17.1
- version/juniper junos/17.1-r1
- version/juniper junos/17.1-r2-s1
- version/juniper junos/17.1-r2-s10
- version/juniper junos/17.1-r2-s2
- version/juniper junos/17.1-r2-s3
- version/juniper junos/17.1-r2-s4
- version/juniper junos/17.1-r2-s5
- version/juniper junos/17.1-r2-s6
- version/juniper junos/17.1-r2-s7
- version/juniper junos/17.2
- version/juniper junos/17.2-r1
- version/juniper junos/17.2-r1-s2
- version/juniper junos/17.2-r1-s4
- version/juniper junos/17.2-r1-s7
- version/juniper junos/17.2-r2
- version/juniper junos/17.2-r2-s6
- version/juniper junos/17.3
- version/juniper junos/17.3-r1
- version/juniper junos/17.3-r2
- version/juniper junos/17.3-r2-s1
- version/juniper junos/17.3-r2-s2
- version/juniper junos/17.3-r3-s1
- version/juniper junos/17.4
- version/juniper junos/17.4-r1
- version/juniper junos/17.4-r1-s1
- version/juniper junos/17.4-r1-s2
- version/juniper junos/17.4-r1-s4
- version/juniper junos/17.4-r1-s6
- version/juniper junos/17.4-r2
- version/juniper junos/17.4-r2-s1
- version/juniper junos/18.1
- version/juniper junos/18.1-r1
- version/juniper junos/18.1-r2
- version/juniper junos/18.1-r2-s1
- version/juniper junos/18.1-r2-s2
- version/juniper junos/18.1-r3
- version/juniper junos/18.2
- version/juniper junos/18.2-r1
- version/juniper junos/18.2-r1-s3
- version/juniper junos/18.2-r1-s4
- version/juniper junos/18.2-r1-s5
- version/juniper junos/18.2-r2-s1
- version/juniper junos/18.2x75
- version/juniper junos/18.2x75-d20
- version/juniper junos/18.3
- version/juniper junos/18.3-r1
- version/juniper junos/18.3-r1-s1
- version/juniper junos/18.3-r1-s2
- version/juniper junos/18.3-r1-s3
- version/juniper junos/17.2x75
- version/juniper junos/17.2x75-d102
- version/juniper junos/17.2x75-d92