Junos OS: Operation on a Resource after Expiration or Release
CVE-2022-22197 is a high-severity operation on a resource after expiration or release vulnerability in Junos OS from Juniper Networks, with a CVSS 3.1 base score of 7.5 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. The record lists versions 17.3R3-S11, 17.4R2-S13, 17.4R3-S4, 18.3R3-S4 as the first without the flaw, so updating Junos OS to one of those releases or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 1.12% chance of exploitation within 30 days, higher than 67% of scored CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update Junos OS to 17.3R3-S11 or 17.4R2-S13, 17.4R3-S4 or 18.3R3-S4 or 18.4R1-S8, 18.4R2-S8, 18.4R3-S6, whichever matches your release line, or a later version.
- Update Junos OS Evolved to 20.1R3-EVO or 20.2R3-EVO or 20.3R2-EVO, whichever matches your release line, or a later version.
- Update Junos to 17.3 or a later version.
- Read the advisory on kb.juniper.net for workarounds and exact fixed builds.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Juniper Networks | Junos OS | before 17.3R3-S11; 17.4 up to, but not including, 17.4R2-S13, 17.4R3-S4; 18.3 up to, but not including, 18.3R3-S4; 18.4 up to, but not including, 18.4R1-S8, 18.4R2-S8, 18.4R3-S6; 19.1 up to, but not including, 19.1R3-S4; 19.2 up to, but not including, 19.2R1-S6, 19.2R3-S2; 19.3 up to, but not including, 19.3R2-S6, 19.3R3-S1; 19.4 up to, but not including, 19.4R1-S4, 19.4R2-S4, 19.4R3; and 3 more ranges | 17.3R3-S11, 17.4R2-S13, 17.4R3-S4, 18.3R3-S4, 18.4R1-S8, 18.4R2-S8, 18.4R3-S6, 19.1R3-S4, 19.2R1-S6, 19.2R3-S2 |
| Juniper Networks | Junos OS Evolved | before 20.1R3-EVO; 20.2 up to, but not including, 20.2R3-EVO; 20.3 up to, but not including, 20.3R2-EVO | 20.1R3-EVO, 20.2R3-EVO, 20.3R2-EVO |
| Juniper Networks | Junos | before 17.3; 17.3; 17.4; 18.3; 18.4; 19.1; 19.2; 19.3; and 4 more ranges | 17.3 |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- NoneNo data is disclosed.
- Integrity
- NoneNothing can be modified.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 7.5 | High | CNA (juniper.net) |
| CVSS 3.1 | 7.5 | High | NVD |
| CVSS 2.0 | 4.3 | Medium | NVD |
Official description
An Operation on a Resource after Expiration or Release vulnerability in the Routing Protocol Daemon (RPD) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated network-based attacker with an established BGP session to cause a Denial of Service (DoS). This issue occurs when proxy-generate route-target filtering is enabled, and certain proxy-route add and delete events are happening. This issue affects: Juniper Networks Junos OS All versions prior to 17.3R3-S11; 17.4 versions prior to 17.4R2-S13, 17.4R3-S4; 18.3 versions prior to 18.3R3-S4; 18.4 versions prior to 18.4R1-S8, 18.4R2-S8, 18.4R3-S6; 19.1 versions prior to 19.1R3-S4; 19.2 versions prior to 19.2R1-S6, 19.2R3-S2; 19.3 versions prior to 19.3R2-S6, 19.3R3-S1; 19.4 versions prior to 19.4R1-S4, 19.4R2-S4, 19.4R3; 20.1 versions prior to 20.1R2; 20.2 versions prior to 20.2R2; 20.3 versions prior to 20.3R1-S2, 20.3R2. Juniper Networks Junos OS Evolved All versions prior to 20.1R3-EVO; 20.2 versions prior to 20.2R3-EVO; 20.3 versions prior to 20.3R2-EVO.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Operation on a Resource after Expiration or Release
The product uses, accesses, or otherwise operates on a resource after that resource has been expired, released, or revoked.
More Operation on a Resource after Expiration or Release vulnerabilities (CWE-672)
Timeline
- CVE record published.
- Record last changed materially (score, affected products, status or references).
References
Advisories
Other vulnerabilities in Junos OS
- 7.5 High severity
- 9.8 Critical severity
- 9.8 Critical severity
- 8.8 High severity
- 8.8 High severity
- 7.5 High severity
Recent Operation on a Resource after Expiration or Release vulnerabilities
- 7.5 High severity
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