Common Weakness Enumeration
CWE-754
Allowed-with-ReviewImproper Check for Unusual or Exceptional Conditions
Abstraction: Class · Status: Incomplete
The product does not check or incorrectly checks for unusual or exceptional conditions that are not expected to occur frequently during day to day operation of the product.
905 vulnerabilities reference this CWE, most recent first.
CVE-2024-39519 (GCVE-0-2024-39519)
Vulnerability from cvelistv5 – Published: 2024-07-11 15:55 – Updated: 2024-08-02 04:26
VLAI
EPSS
VEX
Title
Junos OS Evolved: ACX 7000 Series: Multicast traffic is looped in a multihoming EVPN MPLS scenario
Summary
An Improper Check for Unusual or Exceptional Conditions vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS Evolved on ACX7000 Series allows an unauthenticated, adjacent attacker to cause a
Denial-of-Service (DoS).
On all ACX 7000 Series platforms running
Junos OS Evolved, and configured with IRBs, if a Customer Edge device (CE) device is dual homed to two Provider Edge devices (PE) a traffic loop will occur when the CE sends multicast packets. This issue can be triggered by IPv4 and IPv6 traffic.
This issue affects Junos OS Evolved:
All versions from 22.2R1-EVO and later versions before 22.4R2-EVO,
This issue does not affect Junos OS Evolved versions before 22.1R1-EVO.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-754 - Improper Check for Unusual or Exceptional Conditions
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://supportportal.juniper.net/JSA82983 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Juniper Networks | Junos OS Evolved |
Affected:
22.1-EVO
(semver)
Unaffected: 0 , < 22.1R1-EVO (semver) Affected: 22.2-EVO (custom) Affected: 22.3-EVO (custom) Affected: 22.4-EVO , < 22.4R2-EVO (semver) |
Date Public
2024-07-10 16:00
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CVE-2024-39517 (GCVE-0-2024-39517)
Vulnerability from cvelistv5 – Published: 2024-07-10 23:06 – Updated: 2024-08-02 04:26
VLAI
EPSS
VEX
Title
Junos OS and Junos OS Evolved: Upon processing specific L2 traffic, rpd can hang in devices with EVPN/VXLAN configured
Summary
An Improper Check for Unusual or Exceptional Conditions vulnerability in the Layer 2 Address Learning Daemon (l2ald) on Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker to cause Denial of Service (DoS).
In an EVPN/VXLAN scenario, when a high amount specific Layer 2 packets are processed by the device, it can cause the Routing Protocol Daemon (rpd) to utilize all CPU resources which causes the device to hang. A manual restart of the rpd is required to restore services.
This issue affects both IPv4 and IPv6 implementations.
This issue affects
Junos OS:
All versions earlier than 21.4R3-S7;
22.1 versions earlier than 22.1R3-S5;
22.2 versions earlier than 22.2R3-S3;
22.3 versions earlier than 22.3R3-S3;
22.4 versions earlier than 22.4R3-S2;
23.2 versions earlier than 23.2R2;
23.4 versions earlier than 23.4R1-S1.
Junos OS Evolved:
All versions earlier than 21.4R3-S7-EVO;
22.1-EVO versions earlier than 22.1R3-S5-EVO;
22.2-EVO versions earlier than 22.2R3-S3-EVO;
22.3-EVO versions earlier than 22.3R3-S3-EVO;
22.4-EVO versions earlier than 22.4R3-S2-EVO;
23.2-EVO versions earlier than 23.2R2-EVO;
23.4-EVO versions earlier than 23.4R1-S1-EVO, 23.4R2-EVO.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-754 - Improper Check for Unusual or Exceptional Conditions
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://supportportal.juniper.net/JSA79175 | vendor-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Juniper Networks | Junos OS |
Affected:
0 , < 21.2R3-S8
(semver)
Affected: 21.4 , < 21.4R3-S7 (semver) Affected: 22.1 , < 22.1R3-S5 (semver) Affected: 22.2 , < 22.2R3-S3 (semver) Affected: 22.3 , < 22.3R3-S3 (semver) Affected: 22.4 , < 22.4R3-S2 (semver) Affected: 23.2 , < 23.2R2 (semver) Affected: 23.4 , < 23.4R1-S1 (semver) |
|
| Juniper Networks | Junos OS Evolved |
Affected:
0 , < 21.2R3-S8-EVO
(semver)
Affected: 21.4-EVO , < 21.4R3-S7-EVO (semver) Affected: 22.1-EVO , < 22.1R3-S5-EVO (semver) Affected: 22.2-EVO , < 22.2R3-S3-EVO (semver) Affected: 22.3-EVO , < 22.3R3-S3-EVO (semver) Affected: 22.4-EVO , < 22.4R3-S2-EVO (semver) Affected: 23.2-EVO , < 23.2R2-EVO (semver) Affected: 23.4-EVO , < 23.4R1-S1-EVO, 23.4R2-EVO (semver) |
Date Public
2024-07-10 16:00
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CVE-2024-38355 (GCVE-0-2024-38355)
Vulnerability from cvelistv5 – Published: 2024-06-19 19:48 – Updated: 2024-09-03 20:35
VLAI
EPSS
VEX
Title
Unhandled 'error' event in socket.io
Summary
Socket.IO is an open source, real-time, bidirectional, event-based, communication framework. A specially crafted Socket.IO packet can trigger an uncaught exception on the Socket.IO server, thus killing the Node.js process. This issue is fixed by commit `15af22fc22` which has been included in `socket.io@4.6.2` (released in May 2023). The fix was backported in the 2.x branch as well with commit `d30630ba10`. Users are advised to upgrade. Users unable to upgrade may attach a listener for the "error" event to catch these errors.
Severity
7.3 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/socketio/socket.io/security/ad… | x_refsource_CONFIRM |
| https://github.com/socketio/socket.io/commit/15af… | x_refsource_MISC |
| https://github.com/socketio/socket.io/commit/d306… | x_refsource_MISC |
| https://www.vicarius.io/vsociety/posts/unhandled-… |
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CVE-2024-37151 (GCVE-0-2024-37151)
Vulnerability from cvelistv5 – Published: 2024-07-11 14:39 – Updated: 2025-11-03 19:30
VLAI
EPSS
VEX
Title
Suricata defrag: IP ID reuse can lead to policy bypass
Summary
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine.
Mishandling of multiple fragmented packets using the same IP ID value can lead to packet reassembly failure, which can lead to policy bypass. Upgrade to 7.0.6 or 6.0.20. When using af-packet, enable `defrag` to reduce the scope of the problem.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-754 - Improper Check for Unusual or Exceptional Conditions
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://github.com/OISF/suricata/security/advisor… | x_refsource_CONFIRM |
| https://github.com/OISF/suricata/commit/9d5c4273c… | x_refsource_MISC |
| https://github.com/OISF/suricata/commit/aab7f35c7… | x_refsource_MISC |
| https://redmine.openinfosecfoundation.org/issues/7041 | x_refsource_MISC |
| https://redmine.openinfosecfoundation.org/issues/7042 | x_refsource_MISC |
| https://lists.debian.org/debian-lts-announce/2025… |
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CVE-2024-36128 (GCVE-0-2024-36128)
Vulnerability from cvelistv5 – Published: 2024-06-03 14:59 – Updated: 2024-08-02 03:30
VLAI
EPSS
VEX
Title
Directus is soft-locked by providing a string value to random string util
Summary
Directus is a real-time API and App dashboard for managing SQL database content. Prior to 10.11.2, providing a non-numeric length value to the random string generation utility will create a memory issue breaking the capability to generate random strings platform wide. This creates a denial of service situation where logged in sessions can no longer be refreshed as sessions depend on the capability to generate a random session ID. This vulnerability is fixed in 10.11.2.
Severity
7.5 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-754 - Improper Check for Unusual or Exceptional Conditions
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/directus/directus/security/adv… | x_refsource_CONFIRM |
| https://github.com/directus/directus/commit/7d2a1… | x_refsource_MISC |
Impacted products
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CVE-2024-34694 (GCVE-0-2024-34694)
Vulnerability from cvelistv5 – Published: 2024-06-14 14:31 – Updated: 2024-08-02 02:59
VLAI
EPSS
VEX
Title
LNbits improperly handles potential network and payment failures when using Eclair backend
Summary
LNbits is a Lightning wallet and accounts system. Paying invoices in Eclair that do not get settled within the internal timeout (about 30s) lead to a payment being considered failed, even though it may still be in flight. This vulnerability can lead to a total loss of funds for the node backend. This vulnerability is fixed in 0.12.6.
Severity
8.1 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-754 - Improper Check for Unusual or Exceptional Conditions
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/lnbits/lnbits/security/advisor… | x_refsource_CONFIRM |
Impacted products
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CVE-2024-34360 (GCVE-0-2024-34360)
Vulnerability from cvelistv5 – Published: 2024-05-10 15:50 – Updated: 2024-08-02 02:51
VLAI
EPSS
VEX
Title
Previous ATX is not checked to be the newest valid ATX by Smesher when validating incoming ATX
Summary
go-spacemesh is a Go implementation of the Spacemesh protocol full node. Nodes can publish activations transactions (ATXs) which reference the incorrect previous ATX of the Smesher that created the ATX. ATXs are expected to form a single chain from the newest to the first ATX ever published by an identity. Allowing Smeshers to reference an earlier (but not the latest) ATX as previous breaks this protocol rule and can serve as an attack vector where Nodes are rewarded for holding their PoST data for less than one epoch but still being eligible for rewards. This vulnerability is fixed in go-spacemesh 1.5.2-hotfix1 and Spacemesh API 1.37.1.
Severity
8.2 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-754 - Improper Check for Unusual or Exceptional Conditions
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/spacemeshos/go-spacemesh/secur… | x_refsource_CONFIRM |
| https://github.com/spacemeshos/api/commit/1d5bd97… | x_refsource_MISC |
| https://github.com/spacemeshos/go-spacemesh/commi… | x_refsource_MISC |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| spacemeshos | go-spacemesh |
Affected:
< 1.5.2-hotfix1
|
|
| spacemeshos | go-spacemesh |
Affected:
0 , < 1.5.2-hotfix1
(custom)
cpe:2.3:a:spacemeshos:go-spacemesh:*:*:*:*:*:*:*:* |
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CVE-2024-32867 (GCVE-0-2024-32867)
Vulnerability from cvelistv5 – Published: 2024-05-07 15:06 – Updated: 2024-08-02 02:20
VLAI
EPSS
VEX
Title
Suricata's defrag contains various issues leading to policy bypass
Summary
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 7.0.5 and 6.0.19, various problems in handling of fragmentation anomalies can lead to mis-detection of rules and policy. This vulnerability is fixed in 7.0.5 or 6.0.19.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-754 - Improper Check for Unusual or Exceptional Conditions
Assigner
References
10 references
| URL | Tags |
|---|---|
| https://github.com/OISF/suricata/security/advisor… | x_refsource_CONFIRM |
| https://github.com/OISF/suricata/commit/1e110d0a7… | x_refsource_MISC |
| https://github.com/OISF/suricata/commit/2f39ba75f… | x_refsource_MISC |
| https://github.com/OISF/suricata/commit/414f97c66… | x_refsource_MISC |
| https://github.com/OISF/suricata/commit/bf3d420fb… | x_refsource_MISC |
| https://github.com/OISF/suricata/commit/d13bd2ae2… | x_refsource_MISC |
| https://github.com/OISF/suricata/commit/e6267758e… | x_refsource_MISC |
| https://redmine.openinfosecfoundation.org/issues/6672 | x_refsource_MISC |
| https://redmine.openinfosecfoundation.org/issues/6673 | x_refsource_MISC |
| https://redmine.openinfosecfoundation.org/issues/6677 | x_refsource_MISC |
Impacted products
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CVE-2024-30409 (GCVE-0-2024-30409)
Vulnerability from cvelistv5 – Published: 2024-04-12 15:03 – Updated: 2024-08-02 01:32
VLAI
EPSS
VEX
Title
Junos OS and Junos OS Evolved: Higher CPU consumption on routing engine leads to Denial of Service (DoS).
Summary
An Improper Check for Unusual or Exceptional Conditions vulnerability in telemetry processing of Juniper Networks Junos OS and Junos OS Evolved allows a network-based authenticated attacker to cause the forwarding information base telemetry daemon (fibtd) to crash, leading to a limited Denial of Service.
This issue affects Juniper Networks
Junos OS:
* from 22.1 before 22.1R1-S2, 22.1R2.
Junos OS Evolved:
* from 22.1 before 22.1R1-S2-EVO, 22.1R2-EVO.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-754 - Improper Check for Unusual or Exceptional Conditions
- Denial of Service(DoS)
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://supportportal.juniper.net/JSA79099 | vendor-advisory |
| https://www.first.org/cvss/calculator/4.0#CVSS:4.… | technical-description |
Impacted products
4 products
| Vendor | Product | Version | |
|---|---|---|---|
| Juniper Networks | Junos OS |
Affected:
22.1 , < 22.1R1-S2, 22.1R2
(semver)
|
|
| Juniper Networks | Junos OS Evolved |
Affected:
22.1-EVO , < 22.1R1-S2-EVO, 22.1R2-EVO
(semver)
|
|
| juniper | junos |
Affected:
22.1 , < 22.1r1-s2
(custom)
Affected: 22.1 , < 22.1r2 (custom) cpe:2.3:a:juniper:junos:22.1:*:*:*:*:*:*:* |
|
| juniper | junos_os_evolved |
Affected:
22.1 , < 22.1r1-s2
(custom)
Affected: 22.1 , < 22.1r2 (custom) cpe:2.3:a:juniper:junos_os_evolved:22.1:*:*:*:*:*:*:* |
Date Public
2024-04-10 16:00
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CVE-2024-30402 (GCVE-0-2024-30402)
Vulnerability from cvelistv5 – Published: 2024-04-12 15:27 – Updated: 2024-08-02 01:32
VLAI
EPSS
VEX
Title
Junos OS and Junos OS Evolved: The l2ald crashes on receiving telemetry messages from a specific subscription
Summary
An Improper Check for Unusual or Exceptional Conditions vulnerability in the Layer 2 Address Learning Daemon (l2ald) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker to cause a Denial of Service (DoS).
When telemetry requests are sent to the device, and the Dynamic Rendering Daemon (drend) is suspended, the l2ald crashes and restarts due to factors outside the attackers control. Repeated occurrences of these events causes a sustained DoS condition.
This issue affects:
Junos OS:
* All versions earlier than 20.4R3-S10;
* 21.2 versions earlier than 21.2R3-S7;
* 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-S1;
* 22.4 versions earlier than 22.4R3;
* 23.2 versions earlier than 23.2R1-S2, 23.2R2.
Junos OS Evolved:
* All versions earlier than 21.4R3-S5-EVO;
* 22.1-EVO versions earlier than 22.1R3-S4-EVO;
* 22.2-EVO versions earlier than 22.2R3-S3-EVO;
* 22.3-EVO versions earlier than 22.3R3-S1-EVO;
* 22.4-EVO versions earlier than 22.4R3-EVO;
* 23.2-EVO versions earlier than 23.2R2-EVO.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-754 - Improper Check for Unusual or Exceptional Conditions
- Denial of Service (DoS)
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://supportportal.juniper.net/JSA79180 | vendor-advisory |
| https://www.first.org/cvss/calculator/4.0#CVSS:4.… | technical-description |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Juniper Networks | Junos OS |
Affected:
20.4 , < 20.4R3-S10
(semver)
Affected: 21.2 , < 21.2R3-S7 (semver) Affected: 21.4 , < 21.4R3-S5 (semver) Affected: 22.1 , < 22.1R3-S4 (semver) Affected: 22.2 , < 22.2R3-S3 (semver) Affected: 22.3 , < 22.3R3-S1 (semver) Affected: 22.4 , < 22.4R3 (semver) Affected: 23.2 , < 23.2R1-S2, 23.2R2 (semver) |
|
| Juniper Networks | Junos OS Evolved |
Affected:
21.4-EVO , < 21.4R3-S5-EVO
(semver)
Affected: 22.1-EVO , < 22.1R3-S4-EVO (semver) Affected: 22.2-EVO , < 22.2R3-S3-EVO (semver) Affected: 22.3-EVO , < 22.3R3-S1-EVO (semver) Affected: 22.4-EVO , < 22.4R3-EVO (semver) Affected: 23.2-EVO , < 23.2R2-EVO (semver) |
Date Public
2024-04-10 16:00
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"title": "CVE Program Container"
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Mitigation MIT-3
Requirements
Strategy: Language Selection
- Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
- Choose languages with features such as exception handling that force the programmer to anticipate unusual conditions that may generate exceptions. Custom exceptions may need to be developed to handle unusual business-logic conditions. Be careful not to pass sensitive exceptions back to the user (CWE-209, CWE-248).
Mitigation
Implementation
Check the results of all functions that return a value and verify that the value is expected.
Mitigation
Implementation
If using exception handling, catch and throw specific exceptions instead of overly-general exceptions (CWE-396, CWE-397). Catch and handle exceptions as locally as possible so that exceptions do not propagate too far up the call stack (CWE-705). Avoid unchecked or uncaught exceptions where feasible (CWE-248).
Mitigation MIT-39
Implementation
- Ensure that error messages only contain minimal details that are useful to the intended audience and no one else. The messages need to strike the balance between being too cryptic (which can confuse users) or being too detailed (which may reveal more than intended). The messages should not reveal the methods that were used to determine the error. Attackers can use detailed information to refine or optimize their original attack, thereby increasing their chances of success.
- If errors must be captured in some detail, record them in log messages, but consider what could occur if the log messages can be viewed by attackers. Highly sensitive information such as passwords should never be saved to log files.
- Avoid inconsistent messaging that might accidentally tip off an attacker about internal state, such as whether a user account exists or not.
- Exposing additional information to a potential attacker in the context of an exceptional condition can help the attacker determine what attack vectors are most likely to succeed beyond DoS.
Mitigation MIT-5
Implementation
Strategy: Input Validation
- Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
- When performing input validation, consider all potentially relevant properties, including length, type of input, the full range of acceptable values, missing or extra inputs, syntax, consistency across related fields, and conformance to business rules. As an example of business rule logic, "boat" may be syntactically valid because it only contains alphanumeric characters, but it is not valid if the input is only expected to contain colors such as "red" or "blue."
- Do not rely exclusively on looking for malicious or malformed inputs. This is likely to miss at least one undesirable input, especially if the code's environment changes. This can give attackers enough room to bypass the intended validation. However, denylists can be useful for detecting potential attacks or determining which inputs are so malformed that they should be rejected outright.
Mitigation MIT-38
Architecture and Design
Implementation
If the program must fail, ensure that it fails gracefully (fails closed). There may be a temptation to simply let the program fail poorly in cases such as low memory conditions, but an attacker may be able to assert control before the software has fully exited. Alternately, an uncontrolled failure could cause cascading problems with other downstream components; for example, the program could send a signal to a downstream process so the process immediately knows that a problem has occurred and has a better chance of recovery.
Mitigation
Architecture and Design
Use system limits, which should help to prevent resource exhaustion. However, the product should still handle low resource conditions since they may still occur.
No CAPEC attack patterns related to this CWE.