CVE-2021-31364
published 2021-10-19CVE-2021-31364: An Improper Check for Unusual or Exceptional Conditions vulnerability combined with a Race Condition in the flow daemon (flowd) of Juniper Networks Junos OS on…
PriorityP430medium5.9CVSS 3.1
AVNACHPRNUINSUCNINAH
EPSS
0.64%
47.0th percentile
An Improper Check for Unusual or Exceptional Conditions vulnerability combined with a Race Condition in the flow daemon (flowd) of Juniper Networks Junos OS on SRX300 Series, SRX500 Series, SRX1500, and SRX5000 Series with SPC2 allows an unauthenticated network based attacker sending specific traffic to cause a crash of the flowd/srxpfe process, responsible for traffic forwarding in SRX, which will cause a Denial of Service (DoS). Continued receipt and processing of this specific traffic will create a sustained Denial of Service (DoS) condition. This issue can only occur when specific packets are trying to create the same session and logging for session-close is configured as a policy action. Affected platforms are: SRX300 Series, SRX500 Series, SRX1500, and SRX5000 Series with SPC2. Not affected platforms are: SRX4000 Series, SRX5000 Series with SPC3, and vSRX Series. This issue affects Juniper Networks Junos OS SRX300 Series, SRX500 Series, SRX1500, and SRX5000 Series with SPC2: All versions prior to 17.4R3-S5; 18.3 versions prior to 18.3R3-S5; 18.4 versions prior to 18.4R3-S9; 19.1 versions prior to 19.1R3-S6; 19.2 versions prior to 19.2R1-S7, 19.2R3-S2; 19.3 versions prior to 19.3R2-S6, 19.3R3-S2; 19.4 versions prior to 19.4R1-S4, 19.4R3-S3; 20.1 versions prior to 20.1R2-S2, 20.1R3; 20.2 versions prior to 20.2R3; 20.3 versions prior to 20.3R2-S1, 20.3R3; 20.4 versions prior to 20.4R2.
Affected
24 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| juniper | junos | — | — |
| juniper | junos | — | — |
| juniper | junos | — | — |
| juniper | junos | — | — |
| juniper | junos | — | — |
| juniper | junos | — | — |
| juniper | junos | — | — |
| juniper | junos | — | — |
| juniper | junos | — | — |
| juniper | junos | — | — |
| juniper | junos | — | — |
| juniper | junos_os | — | — |
| juniper | srx_series | — | — |
| juniper_networks | junos_os | >= 18.3 < 18.3R3-S5 | 18.3R3-S5 |
| juniper_networks | junos_os | >= 18.4 < 18.4R3-S9 | 18.4R3-S9 |
| juniper_networks | junos_os | >= 19.1 < 19.1R3-S6 | 19.1R3-S6 |
| juniper_networks | junos_os | >= 19.2 < 19.2R1-S7, 19.2R3-S2 | 19.2R1-S7, 19.2R3-S2 |
| juniper_networks | junos_os | >= 19.3 < 19.3R2-S6, 19.3R3-S2 | 19.3R2-S6, 19.3R3-S2 |
| juniper_networks | junos_os | >= 19.4 < 19.4R1-S4, 19.4R3-S3 | 19.4R1-S4, 19.4R3-S3 |
| juniper_networks | junos_os | >= 20.1 < 20.1R2-S2, 20.1R3 | 20.1R2-S2, 20.1R3 |
| juniper_networks | junos_os | >= 20.2 < 20.2R3 | 20.2R3 |
| juniper_networks | junos_os | >= 20.3 < 20.3R2-S1, 20.3R3 | 20.3R2-S1, 20.3R3 |
| juniper_networks | junos_os | >= 20.4 < 20.4R2 | 20.4R2 |
| juniper_networks | junos_os | >= unspecified < 17.4R3-S5 | 17.4R3-S5 |
CVSS provenance
nvdv3.15.9MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
nvdv2.04.3MEDIUMAV:N/AC:M/Au:N/C:N/I:N/A:P
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Juniper
CVE-2021-31364: An Improper Check for Unusual or Exceptional Conditions vulnerability combined with a Race Condition in the flow daemon (flowd) of Juniper Networks Ju
vendor_juniper·2021-10-19·CVSS 5.9
CVE-2021-31364 [MEDIUM] CWE-362 CVE-2021-31364: An Improper Check for Unusual or Exceptional Conditions vulnerability combined with a Race Condition in the flow daemon (flowd) of Juniper Networks Ju
CVE-2021-31364: An Improper Check for Unusual or Exceptional Conditions vulnerability combined with a Race Condition in the flow daemon (flowd) of Juniper Networks Junos OS on SRX300 Series, SRX500 Series, SRX1500, and SRX5000 Series with SPC2 allows an unauthenticated network based attacker sending specific traffic to cause a crash of the flowd/srxpfe process, responsible for traffic forwarding in SRX, which will cause a Denial of Service (DoS). Continued receipt and processing of this specific traffic will create a sustained Denial of Service (DoS) condition. This issue can only occur when specific packets are trying to create the same session and logging for session-close is configured as a policy action. Affected platforms are: SRX300 Series, SRX500 Series, SRX1500, and SRX5000 Series
GHSA
GHSA-w5r5-j976-gw6f: An Improper Check for Unusual or Exceptional Conditions vulnerability combined with a Race Condition in the flow daemon (flowd) of Juniper Networks Ju
ghsa_unreviewed·2022-05-24
CVE-2021-31364 [MEDIUM] CWE-362 GHSA-w5r5-j976-gw6f: An Improper Check for Unusual or Exceptional Conditions vulnerability combined with a Race Condition in the flow daemon (flowd) of Juniper Networks Ju
An Improper Check for Unusual or Exceptional Conditions vulnerability combined with a Race Condition in the flow daemon (flowd) of Juniper Networks Junos OS on SRX300 Series, SRX500 Series, SRX1500, and SRX5000 Series with SPC2 allows an unauthenticated network based attacker sending specific traffic to cause a crash of the flowd/srxpfe process, responsible for traffic forwarding in SRX, which will cause a Denial of Service (DoS). Continued receipt and processing of this specific traffic will create a sustained Denial of Service (DoS) condition. This issue can only occur when specific packets are trying to create the same session and logging for session-close is configured as a policy action. Affected platforms are: SRX300 Series, SRX500 Series, SRX1500, and SRX5000 Series with SPC2. Not a
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2021-10-19
Published