An Improper Handling of Exceptional Conditions vulnerability in the broadband edge subscriber management daemon (bbe-smgd) of Juniper Networks Junos OS on MX Series allows an attacker directly connected to the vulnerable system who repeatedly flaps DHCP subscriber sessions to cause a slow memory leak, ultimately leading to a Denial of Service (DoS). Memory can only be recovered by manually restarting bbe-smgd.
This issue only occurs if BFD liveness detection for DHCP subscribers is enabled. Systems without BFD liveness detection enabled are not vulnerable to this issue.
Indication of the issue can be observed by periodically executing the 'show system processes extensive' command, which will indicate an increase in memory allocation for bbe-smgd. A small amount of memory is leaked every time a DHCP subscriber logs in, which will become visible over time, ultimately leading to memory starvation.
user@junos> show system processes extensive | match bbe-smgd
13071 root 24 0 415M 201M select 0 0:41 7.28% bbe-smgd{bbe-smgd}
13071 root 20 0 415M 201M select 1 0:04 0.00% bbe-smgd{bbe-smgd}
...
user@junos> show system processes extensive | match bbe-smgd
13071 root 20 0 420M 208M select 0 4:33 0.10% bbe-smgd{bbe-smgd}
13071 root 20 0 420M 208M select 0 0:12 0.00% bbe-smgd{bbe-smgd}
...
This issue affects Juniper Networks Junos OS on MX Series:
* All versions earlier than 20.4R3-S9;
* 21.2 versions earlier than 21.2R3-S7;
* 21.3 versions earlier than 21.3R3-S5;
* 21.4 versions earlier than 21.4R3-S5;
* 22.1 versions earlier than 22.1R3-S4;
* 22.2 versions earlier than 22.2R3-S3;
* 22.3 versions earlier than 22.3R3-S2;
* 22.4 versions earlier than 22.4R2-S2, 22.4R3;
* 23.2 versions earlier than 23.2R1-S1, 23.2R2.
References
| Link | Resource |
|---|---|
| https://supportportal.juniper.net/JSA75725 | Vendor Advisory |
| https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L | Third Party Advisory |
Configurations
Configuration 1 (hide)
| AND |
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History
19 Jan 2024, 17:44
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:o:juniper:junos:21.4:r3-s3:*:*:*:*:*:* cpe:2.3:o:juniper:junos:20.4:r2-s1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.2:r1-s1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.4:r2:*:*:*:*:*:* cpe:2.3:h:juniper:mx10:-:*:*:*:*:*:*:* cpe:2.3:h:juniper:mx960:-:*:*:*:*:*:*:* cpe:2.3:o:juniper:junos:20.4:r3-s6:*:*:*:*:*:* cpe:2.3:h:juniper:mx10000:-:*:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.3:r1-s1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.3:r3-s3:*:*:*:*:*:* cpe:2.3:h:juniper:mx240:-:*:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.1:-:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.2:r3-s6:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.3:r1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:20.4:r3-s3:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.2:r1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.2:r3-s4:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.4:r3-s2:*:*:*:*:*:* cpe:2.3:o:juniper:junos:20.4:r3-s5:*:*:*:*:*:* cpe:2.3:h:juniper:mx10008:-:*:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.2:r2-s2:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.3:r3:*:*:*:*:*:* cpe:2.3:h:juniper:mx150:-:*:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.2:r1-s2:*:*:*:*:*:* cpe:2.3:o:juniper:junos:20.4:-:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.2:r2:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.1:r3-s3:*:*:*:*:*:* cpe:2.3:o:juniper:junos:20.4:r2:*:*:*:*:*:* cpe:2.3:h:juniper:mx5:-:*:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.1:r2:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.3:r3:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.3:r2-s1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:20.4:r1-s1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.3:r2-s1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.2:r1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.3:r1-s1:*:*:*:*:*:* cpe:2.3:h:juniper:mx10004:-:*:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.2:r3:*:*:*:*:*:* cpe:2.3:h:juniper:mx104:-:*:*:*:*:*:*:* cpe:2.3:o:juniper:junos:20.4:r3-s7:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.1:r3-s2:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.3:r3-s4:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.3:r2:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.4:r2:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.2:r3-s3:*:*:*:*:*:* cpe:2.3:o:juniper:junos:20.4:r3-s8:*:*:*:*:*:* cpe:2.3:o:juniper:junos:20.4:r3-s1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.3:-:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.2:-:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.2:r3-s1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.4:r1-s2:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.3:r1-s2:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.4:r1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.2:r3-s2:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.2:r1-s1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.4:r1-s2:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.2:r1-s2:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.4:r1-s1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.4:r2-s1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.3:r3-s1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:20.4:r1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:20.4:r3-s2:*:*:*:*:*:* cpe:2.3:h:juniper:mx204:-:*:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.2:-:*:*:*:*:*:* cpe:2.3:o:juniper:junos:20.4:r3:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.4:-:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.2:r3-s5:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.3:r2-s2:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.2:r2-s2:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.2:r2:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.1:r2-s1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.1:r3-s1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:20.4:r2-s2:*:*:*:*:*:* cpe:2.3:h:juniper:mx480:-:*:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.4:r3-s1:*:*:*:*:*:* cpe:2.3:h:juniper:mx304:-:*:*:*:*:*:*:* cpe:2.3:o:juniper:junos:20.4:r3-s4:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.4:r3-s4:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.2:r2-s1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.1:r1-s2:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.4:-:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.1:r1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.4:r3:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.2:r3:*:*:*:*:*:* cpe:2.3:h:juniper:mx10016:-:*:*:*:*:*:*:* cpe:2.3:h:juniper:mx2008:-:*:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.2:r3-s2:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.3:r1-s2:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.4:r1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.3:r2-s2:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.3:-:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.3:r3-s1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.1:r2-s2:*:*:*:*:*:* cpe:2.3:h:juniper:mx10003:-:*:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.2:r3-s1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.3:r3-s2:*:*:*:*:*:* cpe:2.3:h:juniper:mx80:-:*:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.3:r1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.3:r2:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.4:r2-s1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.4:r2-s2:*:*:*:*:*:* cpe:2.3:h:juniper:mx40:-:*:*:*:*:*:*:* cpe:2.3:h:juniper:mx2020:-:*:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.2:r2-s1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.1:r1-s1:*:*:*:*:*:* cpe:2.3:h:juniper:mx2010:-:*:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.4:r1-s1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:23.2:r1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.1:r3:*:*:*:*:*:* |
|
| CWE | CWE-755 | |
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 6.5 |
| First Time |
Juniper mx10008
Juniper mx150 Juniper mx960 Juniper mx5 Juniper mx104 Juniper mx204 Juniper mx480 Juniper Juniper mx2010 Juniper mx10 Juniper mx10000 Juniper mx240 Juniper mx40 Juniper mx80 Juniper mx2020 Juniper mx304 Juniper mx10004 Juniper mx10003 Juniper mx10016 Juniper junos Juniper mx2008 |
|
| References | () https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L - Third Party Advisory | |
| References | () https://supportportal.juniper.net/JSA75725 - Vendor Advisory |
12 Jan 2024, 01:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2024-01-12 01:15
Updated : 2024-02-28 20:54
NVD link : CVE-2024-21587
Mitre link : CVE-2024-21587
CVE.ORG link : CVE-2024-21587
JSON object : View
Products Affected
juniper
- mx40
- mx10004
- mx960
- mx5
- mx10
- junos
- mx104
- mx204
- mx150
- mx10008
- mx80
- mx2010
- mx10016
- mx2008
- mx10003
- mx304
- mx480
- mx10000
- mx2020
- mx240
CWE
CWE-755
Improper Handling of Exceptional Conditions