Common Weakness Enumeration
CWE-209
AllowedGeneration of Error Message Containing Sensitive Information
Abstraction: Base · Status: Draft
The product generates an error message that includes sensitive information about its environment, users, or associated data.
970 vulnerabilities reference this CWE, most recent first.
CVE-2026-85709 (GCVE-0-2026-85709)
Vulnerability from cvelistv5 – Published: 2026-09-22 16:13 – Updated: 2026-09-22 18:12
VLAI
EPSS
VEX
Title
LightRAG: Sensitive Information Exposure Through Raw Exception Messages in API Error Responses
Summary
LightRAG provides simple and fast retrieval-augmented generation. Prior to 1.5.5, the LightRAG API server returns raw Python exception text from error handlers in document_routes.py, graph_routes.py, query_routes.py, ollama_api.py, and lightrag_server.py. The detail=str(e), detail=str(exc), and equivalent formatted-message paths expose server filesystem paths, database host, port, user, and database names, language-model provider diagnostics, configuration details, and Python library internals to a network client that can trigger an error. The default unauthenticated configuration makes those responses reachable without credentials, and URI-configured backends can disclose connection strings containing credentials depending on the underlying driver error. This issue is fixed in version 1.5.5.
Severity
5.3 (Medium)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-22 18:11 UTC
CWE
- CWE-209 - Generation of Error Message Containing Sensitive Information
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/HKUDS/LightRAG/security/adviso… | x_refsource_CONFIRM |
| https://github.com/HKUDS/LightRAG/pull/3422 | x_refsource_MISC |
| https://github.com/HKUDS/LightRAG/commit/4d90a0eb… | x_refsource_MISC |
| https://github.com/HKUDS/LightRAG/commit/dcab315d… | x_refsource_MISC |
| https://github.com/HKUDS/LightRAG/releases/tag/v1.5.5 | x_refsource_MISC |
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CVE-2026-85115 (GCVE-0-2026-85115)
Vulnerability from cvelistv5 – Published: 2026-10-13 09:18 – Updated: 2026-10-14 13:47
VLAI
EPSS
VEX
Summary
A vulnerability has been identified in .NET Client Library for SIMATIC S7 Webserver API (All versions < V3.3.62). Affected applications do not properly redact PLC restore passwords from HTTP error exception messages.
This could allow an attacker with access to logs or other diagnostic output to obtain the plaintext restore password and potentially perform unauthorized operations on the PLC.
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-14 13:46 UTC
CWE
- CWE-209 - Generation of Error Message Containing Sensitive Information
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Siemens | .NET Client Library for SIMATIC S7 Webserver API |
Affected:
0 , < V3.3.62
(custom)
|
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CVE-2026-84499 (GCVE-0-2026-84499)
Vulnerability from cvelistv5 – Published: 2026-09-23 18:47 – Updated: 2026-10-16 11:54
VLAI
EPSS
VEX
Title
Automation-controller: automation-controller-container: automation-controller: write-only survey password recovered in plaintext via schedule/workflowjobtemplatenode survey min/max validation error message
Summary
A flaw was found in Red Hat Ansible Automation Platform's automation-
controller. Survey questions of type password are write-only and stored
encrypted, displayed only as a placeholder on read. When a schedule or
workflow job template node is revalidated against a tightened survey
specification, the controller decrypts the stored password and includes its
plaintext value in the minimum/maximum length validation error message
returned in the HTTP response. A user with the delegated JobTemplate Admin
role can tighten the survey length constraint and trigger revalidation of a
schedule or node created by another, higher-privileged user, thereby
recovering that user's stored password in plaintext.
Severity
7.7 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-26 22:46 UTC
CWE
- CWE-209 - Generation of Error Message Containing Sensitive Information
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://access.redhat.com/errata/RHSA-2026:71113 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:71114 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:71177 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:71179 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/security/cve/CVE-2026-84499 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2527090 | issue-trackingx_refsource_REDHAT |
Impacted products
5 products
| Vendor | Product | Version | |
|---|---|---|---|
| Red Hat | Red Hat Ansible Automation Platform 2.5 for RHEL 8 |
Unaffected:
0:4.6.33-1.el8ap , < *
(rpm)
cpe:/a:redhat:ansible_automation_platform:2.5::el8 cpe:/a:redhat:ansible_automation_platform:2.5::el9 cpe:/a:redhat:ansible_automation_platform_developer:2.5::el8 cpe:/a:redhat:ansible_automation_platform_developer:2.5::el9 cpe:/a:redhat:ansible_automation_platform_inside:2.5::el8 cpe:/a:redhat:ansible_automation_platform_inside:2.5::el9 |
|
| Red Hat | Red Hat Ansible Automation Platform 2.5 for RHEL 9 |
Unaffected:
0:4.6.33-1.el9ap , < *
(rpm)
cpe:/a:redhat:ansible_automation_platform:2.5::el8 cpe:/a:redhat:ansible_automation_platform:2.5::el9 cpe:/a:redhat:ansible_automation_platform_developer:2.5::el8 cpe:/a:redhat:ansible_automation_platform_developer:2.5::el9 cpe:/a:redhat:ansible_automation_platform_inside:2.5::el8 cpe:/a:redhat:ansible_automation_platform_inside:2.5::el9 |
|
| Red Hat | Red Hat Ansible Automation Platform 2.6 for RHEL 9 |
Unaffected:
0:4.7.17-1.el9ap , < *
(rpm)
cpe:/a:redhat:ansible_automation_platform:2.6::el10 cpe:/a:redhat:ansible_automation_platform:2.6::el9 cpe:/a:redhat:ansible_automation_platform_developer:2.6::el10 cpe:/a:redhat:ansible_automation_platform_developer:2.6::el9 cpe:/a:redhat:ansible_automation_platform_inside:2.6::el9 |
|
| Red Hat | Red Hat Ansible Automation Platform 2.6 |
Unaffected:
1789673739 , < *
(rpm)
cpe:/a:redhat:ansible_automation_platform:2.6::el9 |
|
| Red Hat | Red Hat Ansible Automation Platform 2.7 |
Unaffected:
1789580684 , < *
(rpm)
cpe:/a:redhat:ansible_automation_platform:2.7::el9 |
Date Public
2026-09-23 00:00
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CVE-2026-83786 (GCVE-0-2026-83786)
Vulnerability from cvelistv5 – Published: 2026-10-13 19:00 – Updated: 2026-10-16 23:22
VLAI
EPSS
VEX
Title
Windows NTFS Information Disclosure Vulnerability
Summary
Generation of error message containing sensitive information in Windows NTFS allows an authorized attacker to disclose information locally.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-13 20:28 UTC
CWE
- CWE-209 - Generation of Error Message Containing Sensitive Information
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
21 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Windows 10 Version 1607 |
Affected:
10.0.14393.0 , < 10.0.14393.9612
(custom)
|
|
| Microsoft | Windows 10 Version 1809 |
Affected:
10.0.17763.0 , < 10.0.17763.9376
(custom)
|
|
| Microsoft | Windows 10 Version 21H2 |
Affected:
10.0.19044.0 , < 10.0.19044.7807
(custom)
|
|
| Microsoft | Windows 10 Version 22H2 |
Affected:
10.0.19045.0 , < 10.0.19045.7807
(custom)
|
|
| Microsoft | Windows 11 version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.7652
(custom)
|
|
| Microsoft | Windows 11 Version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.7652
(custom)
|
|
| Microsoft | Windows 11 Version 24H2 |
Affected:
10.0.26100.0 , < 10.0.26100.9711
(custom)
|
|
| Microsoft | Windows 11 Version 25H2 |
Affected:
10.0.26200.0 , < 10.0.26200.9711
(custom)
|
|
| Microsoft | Windows 11 version 26H1 |
Affected:
10.0.28000.0 , < 10.0.28000.3231
(custom)
|
|
| Microsoft | Windows 11 Version 26H2 |
Affected:
10.0.26300.0 , < 10.0.26300.9711
(custom)
|
|
| Microsoft | Windows Server 2012 |
Affected:
6.2.9200.0 , < 6.2.9200.26434
(custom)
|
|
| Microsoft | Windows Server 2012 (Server Core installation) |
Affected:
6.2.9200.0 , < 6.2.9200.26434
(custom)
|
|
| Microsoft | Windows Server 2012 R2 |
Affected:
6.3.9600.0 , < 6.3.9600.23470
(custom)
|
|
| Microsoft | Windows Server 2012 R2 (Server Core installation) |
Affected:
6.3.9600.0 , < 6.3.9600.23470
(custom)
|
|
| Microsoft | Windows Server 2016 |
Affected:
10.0.14393.0 , < 10.0.14393.9612
(custom)
|
|
| Microsoft | Windows Server 2016 (Server Core installation) |
Affected:
10.0.14393.0 , < 10.0.14393.9612
(custom)
|
|
| Microsoft | Windows Server 2019 |
Affected:
10.0.17763.0 , < 10.0.17763.9376
(custom)
|
|
| Microsoft | Windows Server 2019 (Server Core installation) |
Affected:
10.0.17763.0 , < 10.0.17763.9376
(custom)
|
|
| Microsoft | Windows Server 2022 |
Affected:
10.0.20348.0 , < 10.0.20348.5761
(custom)
|
|
| Microsoft | Windows Server 2025 |
Affected:
10.0.26100.0 , < 10.0.26100.33650
(custom)
|
|
| Microsoft | Windows Server 2025 (Server Core installation) |
Affected:
10.0.26100.0 , < 10.0.26100.33650
(custom)
|
Date Public
2026-10-13 14:00
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CVE-2026-82739 (GCVE-0-2026-82739)
Vulnerability from cvelistv5 – Published: 2026-09-01 03:27 – Updated: 2026-09-01 12:44
VLAI
EPSS
VEX
Title
Ash.Resource.Validation.Confirm leaks a confirmed field's stored value in the atomic mismatch error
Summary
Generation of Error Message Containing Sensitive Information vulnerability in ash-project ash discloses the stored value of a confirmed field to an actor who fails its confirmation check.
Ash.Resource.Validation.Confirm's atomic implementation (atomic/2 in lib/ash/resource/validation/confirm.ex) built the mismatch error with its value set to the field being confirmed. When the actor supplies only the confirmation argument and not the field itself, value resolves through atomic_ref/2 to the field's current stored value, so the mismatch error echoes that stored value back to the actor. Against a confirmation guarding a sensitive attribute, an actor can submit a deliberately wrong confirmation and read the real value from the returned error. The fix reports the actor-supplied confirmation in the error instead of the stored field value.
This issue affects ash: from 2.17.20 before 3.32.2.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-01 12:43 UTC
CWE
- CWE-209 - Generation of Error Message Containing Sensitive Information
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/ash-project/ash/security/advis… | vendor-advisoryrelated |
| https://cna.erlef.org/cves/CVE-2026-82739.html | related |
| https://osv.dev/vulnerability/EEF-CVE-2026-82739 | related |
| https://github.com/ash-project/ash/commit/7dfe5f0… | patch |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| ash-project | ash |
Affected:
2.17.20 , < 3.32.2
(semver)
cpe:2.3:a:ash-project:ash:*:*:*:*:*:*:*:* |
|
| ash-project | ash |
Affected:
fadecf3ee95640bd3bc7298df4799e0375537fd2 , < 7dfe5f0b1ba4267580ded947dc861351d4dc8e2b
(git)
cpe:2.3:a:ash-project:ash:*:*:*:*:*:*:*:* |
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CVE-2026-82733 (GCVE-0-2026-82733)
Vulnerability from cvelistv5 – Published: 2026-09-01 02:09 – Updated: 2026-09-01 15:12
VLAI
EPSS
VEX
Title
Route handler return value echoed into AshTypescript error response
Summary
Generation of Error Message Containing Sensitive Information vulnerability in ash-project ash_typescript allows an unauthenticated attacker to read internal application data from an HTTP 500 response body.
When a typed-controller route handler returns anything other than a %Plug.Conn{}, dispatch/3 in lib/ash_typescript/typed_controller/request_handler.ex passes the value to unexpected_return/2, which interpolates inspect(value, limit: 50) directly into the response message. The limit option bounds elements per collection rather than the term as a whole, so a handler falling through with a term such as {:error, %User{}} or a changeset serialises its full field set, including hashed passwords, tokens, and tenant identifiers, into the JSON error returned to the caller.
This contradicts the module's own posture elsewhere: the rescue clause gates Exception.message/1 behind AshTypescript.typed_controller_show_raised_errors?/0 and otherwise returns a generic message, while this path is ungated and always echoes.
This issue affects ash_typescript: from 0.15.0 before 0.18.0.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-01 15:11 UTC
CWE
- CWE-209 - Generation of Error Message Containing Sensitive Information
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/ash-project/ash_typescript/sec… | relatedvendor-advisory |
| https://cna.erlef.org/cves/CVE-2026-82733.html | related |
| https://osv.dev/vulnerability/EEF-CVE-2026-82733 | related |
| https://github.com/ash-project/ash_typescript/com… | patch |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| ash-project | ash_typescript |
Affected:
0.15.0 , < 0.18.0
(semver)
cpe:2.3:a:ash-project:ash_typescript:*:*:*:*:*:*:*:* |
|
| ash-project | ash_typescript |
Affected:
546a15e1a2d7dbf1df2d5a6ee4404bc3da87852e , < dec80e29543f96e43eeece8501376562f17ac638
(git)
cpe:2.3:a:ash-project:ash_typescript:*:*:*:*:*:*:*:* |
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CVE-2026-82727 (GCVE-0-2026-82727)
Vulnerability from cvelistv5 – Published: 2026-08-31 03:03 – Updated: 2026-08-31 14:49
VLAI
EPSS
VEX
Title
AshPhoenix Form.Auto leaks submitted params in an unknown _union_type error message
Summary
Generation of Error Message Containing Sensitive Information vulnerability in ash-project ash_phoenix writes the entire raw submitted param map into an exception message, so secrets submitted alongside a union form field leak into logs, crash reports and the dev error page.
When AshPhoenix.Form.Auto builds a union sub-form and the submitted _union_type does not match a configured type, both raise sites built the message with inspect(params, pretty: true), embedding the full untrusted param map, and also inspected the internal union constraints[:types]. Because the message is constructed by the library rather than Phoenix's parameter logger, config :phoenix, :filter_parameters never redacts it. An attacker controls both the trigger and the contents: submitting %{"_union_type" => "nope", "password" => "..."} puts the password verbatim in the raised message. The fix reports only the offending _union_type and the valid type names, dropping the param and constraints dumps.
This issue affects ash_phoenix: from 1.2.17 before 2.3.25.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-31 14:49 UTC
CWE
- CWE-209 - Generation of Error Message Containing Sensitive Information
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/ash-project/ash_phoenix/securi… | vendor-advisoryrelated |
| https://cna.erlef.org/cves/CVE-2026-82727.html | related |
| https://osv.dev/vulnerability/EEF-CVE-2026-82727 | related |
| https://github.com/ash-project/ash_phoenix/commit… | patch |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| ash-project | ash_phoenix |
Affected:
1.2.17 , < 2.3.25
(semver)
cpe:2.3:a:ash-project:ash_phoenix:*:*:*:*:*:*:*:* |
|
| ash-project | ash_phoenix |
Affected:
a3436fcc321e3b34c242cceaf62c3c92bc1a452b , < 0c1775c3cf8988f9abd10a8f92315afc5f06f16d
(git)
cpe:2.3:a:ash-project:ash_phoenix:*:*:*:*:*:*:*:* |
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CVE-2026-82580 (GCVE-0-2026-82580)
Vulnerability from cvelistv5 – Published: 2026-08-31 01:09 – Updated: 2026-08-31 16:06
VLAI
EPSS
VEX
Title
AshAi echoes raw tool exception messages into the conversation, disclosing internal details
Summary
Generation of Error Message Containing Sensitive Information vulnerability in ash-project ash_ai discloses internal error text to chat users.
In AshAi.ToolLoop and AshAi.Tools, an exception raised while executing a tool was serialized verbatim with Exception.message/1 into the tool-result content. That content is appended to the conversation, emitted as a {:tool_result, ...} stream event, and sent back to the model, which typically relays it to the user. No filtering happened first, so anything raised inside a tool callback or lifecycle hook (database constraint messages, adapter errors, query fragments, policy or validation internals) was echoed as-is. A chat user who can steer tool arguments into a raising code path receives the raw internal text. The fix routes raised tool errors through the same safe formatter used for other tool errors.
This issue affects ash_ai: from 0.6.0 before 1.0.0.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-31 16:06 UTC
CWE
- CWE-209 - Generation of Error Message Containing Sensitive Information
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/ash-project/ash_ai/security/ad… | vendor-advisoryrelated |
| https://cna.erlef.org/cves/CVE-2026-82580.html | related |
| https://osv.dev/vulnerability/EEF-CVE-2026-82580 | related |
| https://github.com/ash-project/ash_ai/commit/c68d… | patch |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| ash-project | ash_ai |
Affected:
0.6.0 , < 1.0.0
(semver)
cpe:2.3:a:ash-project:ash_ai:*:*:*:*:*:*:*:* |
|
| ash-project | ash_ai |
Affected:
bc2122f78fca6c11d8ec2b9ac53148ec17476460 , < c68dfbdb220426dc015b58379e95bde8e9f0995a
(git)
cpe:2.3:a:ash-project:ash_ai:*:*:*:*:*:*:*:* |
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CVE-2026-79777 (GCVE-0-2026-79777)
Vulnerability from cvelistv5 – Published: 2026-08-25 15:16 – Updated: 2026-08-28 22:25
VLAI
EPSS
VEX
Title
rclone before v1.75.0 Information Disclosure via RC API
Summary
rclone before v1.75.0 includes full Go stack traces in RC API error responses when panics occur. Attackers can trigger panics to leak internal file paths, module versions, goroutine states, and memory addresses.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-28 22:25 UTC
CWE
- CWE-209 - Generation of Error Message Containing Sensitive Information
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/rclone/rclone/security/advisor… | vendor-advisory |
| https://www.vulncheck.com/advisories/rclone-befor… | third-party-advisory |
Impacted products
Date Public
2026-07-31 00:00
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CVE-2026-78693 (GCVE-0-2026-78693)
Vulnerability from cvelistv5 – Published: 2026-08-30 18:28 – Updated: 2026-08-31 15:58
VLAI
EPSS
VEX
Title
Incomplete redaction re-attaches the original error path in AshGraphql, leaking internal field names
Summary
Generation of Error Message Containing Sensitive Information vulnerability in ash-project ash_graphql allows a remote client to read internal field names that an application configured its error_handler to redact.
In AshGraphql.Errors, each error is passed to the configured error_handler and the returned map is merged with the pre-handler path via Map.put_new(handled, :path, path). Because put_new defers to the handler only when the handler itself set :path, a sanitizing handler that returns a fresh map or deletes :path has that decision reverted. The re-injected path comes from build_error_path/5, which falls back to raw internal Ash attribute and argument names when no field_names mapping is configured. A validation failure on a non-exposed or nested field therefore returns internal names in the GraphQL error path, defeating the application's redaction.
This issue affects ash_graphql: from 1.9.0 before 1.11.0.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-31 15:58 UTC
CWE
- CWE-209 - Generation of Error Message Containing Sensitive Information
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/ash-project/ash_graphql/securi… | vendor-advisoryrelated |
| https://cna.erlef.org/cves/CVE-2026-78693.html | related |
| https://osv.dev/vulnerability/EEF-CVE-2026-78693 | related |
| https://github.com/ash-project/ash_graphql/commit… | patch |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| ash-project | ash_graphql |
Affected:
1.9.0 , < 1.11.0
(semver)
cpe:2.3:a:ash-project:ash_graphql:*:*:*:*:*:*:*:* |
|
| ash-project | ash_graphql |
Affected:
6d2d8d995906d68cc245d209a9b3f9853405eb61 , < 78e90d369f09f44c534816de541e60841066a467
(git)
cpe:2.3:a:ash-project:ash_graphql:*:*:*:*:*:*:*:* |
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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.
Mitigation
Implementation
Handle exceptions internally and do not display errors containing potentially sensitive information to a user.
Mitigation MIT-33
Implementation
Strategy: Attack Surface Reduction
Use naming conventions and strong types to make it easier to spot when sensitive data is being used. When creating structures, objects, or other complex entities, separate the sensitive and non-sensitive data as much as possible.
Mitigation MIT-40
Implementation
Build and Compilation
Strategy: Compilation or Build Hardening
Debugging information should not make its way into a production release.
Mitigation MIT-40
Implementation
Build and Compilation
Strategy: Environment Hardening
Debugging information should not make its way into a production release.
Mitigation
System Configuration
Where available, configure the environment to use less verbose error messages. For example, in PHP, disable the display_errors setting during configuration, or at runtime using the error_reporting() function.
Mitigation
System Configuration
Create default error pages or messages that do not leak any information.
CAPEC-215: Fuzzing for application mapping
An attacker sends random, malformed, or otherwise unexpected messages to a target application and observes the application's log or error messages returned. The attacker does not initially know how a target will respond to individual messages but by attempting a large number of message variants they may find a variant that trigger's desired behavior. In this attack, the purpose of the fuzzing is to observe the application's log and error messages, although fuzzing a target can also sometimes cause the target to enter an unstable state, causing a crash.
CAPEC-463: Padding Oracle Crypto Attack
An adversary is able to efficiently decrypt data without knowing the decryption key if a target system leaks data on whether or not a padding error happened while decrypting the ciphertext. A target system that leaks this type of information becomes the padding oracle and an adversary is able to make use of that oracle to efficiently decrypt data without knowing the decryption key by issuing on average 128*b calls to the padding oracle (where b is the number of bytes in the ciphertext block). In addition to performing decryption, an adversary is also able to produce valid ciphertexts (i.e., perform encryption) by using the padding oracle, all without knowing the encryption key.
CAPEC-54: Query System for Information
An adversary, aware of an application's location (and possibly authorized to use the application), probes an application's structure and evaluates its robustness by submitting requests and examining responses. Often, this is accomplished by sending variants of expected queries in the hope that these modified queries might return information beyond what the expected set of queries would provide.
CAPEC-7: Blind SQL Injection
Blind SQL Injection results from an insufficient mitigation for SQL Injection. Although suppressing database error messages are considered best practice, the suppression alone is not sufficient to prevent SQL Injection. Blind SQL Injection is a form of SQL Injection that overcomes the lack of error messages. Without the error messages that facilitate SQL Injection, the adversary constructs input strings that probe the target through simple Boolean SQL expressions. The adversary can determine if the syntax and structure of the injection was successful based on whether the query was executed or not. Applied iteratively, the adversary determines how and where the target is vulnerable to SQL Injection.