CVE-2022-37452

View on CVE.org

Published Aug 7, 2022 CVSS 3.1 · 9.8 Critical EPSS 3.8% KEV · Not listed

Description

Exim before 4.95 has a heap-based buffer overflow for the alias list in host_name_lookup in host.c when sender_host_name is set.

Affected Products

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:exim:exim:*:*:*:*:*:*:*:*

Configuration 2 [-]

cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

Source	ID	Title
Debian DLA	DLA-3082-1	exim4 security update
EUVD	EUVD-2022-40078	Exim before 4.95 has a heap-based buffer overflow for the alias list in host_name_lookup in host.c when sender_host_name is set.
Ubuntu USN	USN-5574-1	Exim vulnerability

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: 3.8% (3.768% probability within 30 days)

Key SSVC decision points have not yet been added.

References

Link	Providers
https://github.com/Exim/exim/commit/d4bc023436e4cce7c23c5f8bb5199e178b4cc743
https://github.com/Exim/exim/compare/exim-4.94...exim-4.95
https://github.com/Exim/exim/wiki/EximSecurity
https://github.com/ivd38/exim_overflow
https://lists.debian.org/debian-lts-announce/2022/08/msg00014.html
https://www.exim.org/static/doc/security/
https://www.openwall.com/lists/oss-security/2022/08/06/8

History

No history.

Subscriptions

Debian Debian Linux

Exim Exim

Weaknesses

CWE-787

Sources

CVE record Updated: Aug 3, 2024, 10:29 AM

Status: PUBLISHED
Assigner: mitre
Published: Aug 7, 2022, 5:06 PM
Updated: Aug 3, 2024, 10:29 AM
Reserved: Aug 7, 2022, 12:00 AM

View source JSON

Vulnrichment No data

No data.

NVD Updated: Jun 17, 2026, 4:55 AM

Status: Modified
Published: Aug 7, 2022, 6:15 PM
Modified: Jun 17, 2026, 4:55 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

{"containers": {"cna": {"affected": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "descriptions": [{"lang": "en", "value": "Exim before 4.95 has a heap-based buffer overflow for the alias list in host_name_lookup in host.c when sender_host_name is set."}], "problemTypes": [{"descriptions": [{"description": "n/a", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2022-08-27T18:06:15.000Z", "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://github.com/Exim/exim/wiki/EximSecurity"}, {"tags": ["x_refsource_MISC"], "url": "https://www.exim.org/static/doc/security/"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/ivd38/exim_overflow"}, {"tags": ["x_refsource_MISC"], "url": "https://www.openwall.com/lists/oss-security/2022/08/06/8"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/Exim/exim/compare/exim-4.94...exim-4.95"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/Exim/exim/commit/d4bc023436e4cce7c23c5f8bb5199e178b4cc743"}, {"name": "[debian-lts-announce] 20220827 [SECURITY] [DLA 3082-1] exim4 security update", "tags": ["mailing-list", "x_refsource_MLIST"], "url": "https://lists.debian.org/debian-lts-announce/2022/08/msg00014.html"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "cve@mitre.org", "ID": "CVE-2022-37452", "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": "Exim before 4.95 has a heap-based buffer overflow for the alias list in host_name_lookup in host.c when sender_host_name is set."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "n/a"}]}]}, "references": {"reference_data": [{"name": "https://github.com/Exim/exim/wiki/EximSecurity", "refsource": "MISC", "url": "https://github.com/Exim/exim/wiki/EximSecurity"}, {"name": "https://www.exim.org/static/doc/security/", "refsource": "MISC", "url": "https://www.exim.org/static/doc/security/"}, {"name": "https://github.com/ivd38/exim_overflow", "refsource": "MISC", "url": "https://github.com/ivd38/exim_overflow"}, {"name": "https://www.openwall.com/lists/oss-security/2022/08/06/8", "refsource": "MISC", "url": "https://www.openwall.com/lists/oss-security/2022/08/06/8"}, {"name": "https://github.com/Exim/exim/compare/exim-4.94...exim-4.95", "refsource": "MISC", "url": "https://github.com/Exim/exim/compare/exim-4.94...exim-4.95"}, {"name": "https://github.com/Exim/exim/commit/d4bc023436e4cce7c23c5f8bb5199e178b4cc743", "refsource": "MISC", "url": "https://github.com/Exim/exim/commit/d4bc023436e4cce7c23c5f8bb5199e178b4cc743"}, {"name": "[debian-lts-announce] 20220827 [SECURITY] [DLA 3082-1] exim4 security update", "refsource": "MLIST", "url": "https://lists.debian.org/debian-lts-announce/2022/08/msg00014.html"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T10:29:21.079Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/Exim/exim/wiki/EximSecurity"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://www.exim.org/static/doc/security/"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/ivd38/exim_overflow"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://www.openwall.com/lists/oss-security/2022/08/06/8"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/Exim/exim/compare/exim-4.94...exim-4.95"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/Exim/exim/commit/d4bc023436e4cce7c23c5f8bb5199e178b4cc743"}, {"name": "[debian-lts-announce] 20220827 [SECURITY] [DLA 3082-1] exim4 security update", "tags": ["mailing-list", "x_refsource_MLIST", "x_transferred"], "url": "https://lists.debian.org/debian-lts-announce/2022/08/msg00014.html"}]}]}, "cveMetadata": {"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "cveId": "CVE-2022-37452", "datePublished": "2022-08-07T17:06:55.000Z", "dateReserved": "2022-08-07T00:00:00.000Z", "dateUpdated": "2024-08-03T10:29:21.079Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:exim:exim:*:*:*:*:*:*:*:*", "matchCriteriaId": "58E69558-B96C-4F4F-B8E1-15F3CA8443CA", "versionEndExcluding": "4.95", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*", "matchCriteriaId": "07B237A9-69A3-4A9C-9DA0-4E06BD37AE73", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Exim before 4.95 has a heap-based buffer overflow for the alias list in host_name_lookup in host.c when sender_host_name is set."}, {"lang": "es", "value": "Exim versiones anteriores a 4.95, presenta un desbordamiento de b\u00fafer en la regi\u00f3n heap de la memoria para la lista de alias en la funci\u00f3n host_name_lookup en el archivo host.c cuando sender_host_name est\u00e1 establecido"}], "id": "CVE-2022-37452", "lastModified": "2026-06-17T04:55:07.057", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2022-08-07T18:15:08.343", "references": [{"source": "cve@mitre.org", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/Exim/exim/commit/d4bc023436e4cce7c23c5f8bb5199e178b4cc743"}, {"source": "cve@mitre.org", "tags": ["Patch", "Release Notes", "Third Party Advisory"], "url": "https://github.com/Exim/exim/compare/exim-4.94...exim-4.95"}, {"source": "cve@mitre.org", "tags": ["Release Notes", "Third Party Advisory"], "url": "https://github.com/Exim/exim/wiki/EximSecurity"}, {"source": "cve@mitre.org", "tags": ["Exploit", "Patch", "Third Party Advisory"], "url": "https://github.com/ivd38/exim_overflow"}, {"source": "cve@mitre.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2022/08/msg00014.html"}, {"source": "cve@mitre.org", "tags": ["Vendor Advisory"], "url": "https://www.exim.org/static/doc/security/"}, {"source": "cve@mitre.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://www.openwall.com/lists/oss-security/2022/08/06/8"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/Exim/exim/commit/d4bc023436e4cce7c23c5f8bb5199e178b4cc743"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Release Notes", "Third Party Advisory"], "url": "https://github.com/Exim/exim/compare/exim-4.94...exim-4.95"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes", "Third Party Advisory"], "url": "https://github.com/Exim/exim/wiki/EximSecurity"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Patch", "Third Party Advisory"], "url": "https://github.com/ivd38/exim_overflow"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2022/08/msg00014.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.exim.org/static/doc/security/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://www.openwall.com/lists/oss-security/2022/08/06/8"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-787"}], "source": "nvd@nist.gov", "type": "Primary"}]}