CVE-2015-8954 - Vulnerability Details - OpenCVE

Description

The MemcmpLowercase function in Suricata before 2.0.6 improperly excludes the first byte from comparisons, which might allow remote attackers to bypass intrusion-prevention functionality via a crafted HTTP request.

Published: 2017-03-20

Score: 9.8 Critical

EPSS: 1.9% Low

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

n/a

affected

Version	Status	Constraints
`n/a`	affected	—

Configuration 1 [-]

cpe:2.3:a:openinfosecfoundation:suricata:*:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories

Source	ID	Title
EUVD	EUVD-2015-8810	The MemcmpLowercase function in Suricata before 2.0.6 improperly excludes the first byte from comparisons, which might allow remote attackers to bypass intrusion-prevention functionality via a crafted HTTP request.

No CVSS v4.0

No CVSS v3.1

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

This CVE is not in the KEV list.

The EPSS score is 0.01862.

Key SSVC decision points have not yet been added.

References

Link	Providers
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=777523
https://redmine.openinfosecfoundation.org/issues/1364
https://suricata-ids.org/2015/01/15/suricata-2-0-6-available/

History

No history.

Subscriptions

Openinfosecfoundation Suricata

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2017-03-20T16:00:00.000Z

Updated: 2024-08-06T08:36:31.124Z

Reserved: 2016-08-28T00:00:00.000Z

Link: CVE-2015-8954

Vulnrichment

No data.

NVD

Status : Modified

Published: 2017-03-20T16:59:01.407

Modified: 2026-05-13T00:24:29.033

Link: CVE-2015-8954

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-264

{"containers": {"cna": {"affected": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "datePublic": "2015-01-15T00:00:00.000Z", "descriptions": [{"lang": "en", "value": "The MemcmpLowercase function in Suricata before 2.0.6 improperly excludes the first byte from comparisons, which might allow remote attackers to bypass intrusion-prevention functionality via a crafted HTTP request."}], "problemTypes": [{"descriptions": [{"description": "n/a", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2017-03-20T15:57:01.000Z", "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre"}, "references": [{"tags": ["x_refsource_CONFIRM"], "url": "https://suricata-ids.org/2015/01/15/suricata-2-0-6-available/"}, {"tags": ["x_refsource_CONFIRM"], "url": "https://redmine.openinfosecfoundation.org/issues/1364"}, {"tags": ["x_refsource_CONFIRM"], "url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=777523"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "cve@mitre.org", "ID": "CVE-2015-8954", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "n/a", "version": {"version_data": [{"version_value": "n/a"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "The MemcmpLowercase function in Suricata before 2.0.6 improperly excludes the first byte from comparisons, which might allow remote attackers to bypass intrusion-prevention functionality via a crafted HTTP request."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "n/a"}]}]}, "references": {"reference_data": [{"name": "https://suricata-ids.org/2015/01/15/suricata-2-0-6-available/", "refsource": "CONFIRM", "url": "https://suricata-ids.org/2015/01/15/suricata-2-0-6-available/"}, {"name": "https://redmine.openinfosecfoundation.org/issues/1364", "refsource": "CONFIRM", "url": "https://redmine.openinfosecfoundation.org/issues/1364"}, {"name": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=777523", "refsource": "CONFIRM", "url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=777523"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-06T08:36:31.124Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://suricata-ids.org/2015/01/15/suricata-2-0-6-available/"}, {"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://redmine.openinfosecfoundation.org/issues/1364"}, {"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=777523"}]}]}, "cveMetadata": {"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "cveId": "CVE-2015-8954", "datePublished": "2017-03-20T16:00:00.000Z", "dateReserved": "2016-08-28T00:00:00.000Z", "dateUpdated": "2024-08-06T08:36:31.124Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:openinfosecfoundation:suricata:*:*:*:*:*:*:*:*", "matchCriteriaId": "463678B1-3332-4B9C-B434-78759447570A", "versionEndIncluding": "2.0.5", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The MemcmpLowercase function in Suricata before 2.0.6 improperly excludes the first byte from comparisons, which might allow remote attackers to bypass intrusion-prevention functionality via a crafted HTTP request."}, {"lang": "es", "value": "La funci\u00f3n MemcmpLowercase en Suricata en versiones anteriores a 2.0.6 excluye incorrectamente el primer byte de las comparaciones, lo que podr\u00eda permitir a atacantes remotos eludir la funcionalidad de prevenci\u00f3n de intrusiones a trav\u00e9s de una solicitud HTTP manipulada."}], "id": "CVE-2015-8954", "lastModified": "2026-05-13T00:24:29.033", "metrics": {"cvssMetricV2": [{"acInsufInfo": true, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 7.5, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV30": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.0"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2017-03-20T16:59:01.407", "references": [{"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=777523"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://redmine.openinfosecfoundation.org/issues/1364"}, {"source": "cve@mitre.org", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://suricata-ids.org/2015/01/15/suricata-2-0-6-available/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=777523"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://redmine.openinfosecfoundation.org/issues/1364"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://suricata-ids.org/2015/01/15/suricata-2-0-6-available/"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-264"}], "source": "nvd@nist.gov", "type": "Primary"}]}