CVE-2022-37451

Exim before 4.96 has an invalid free in pam_converse in auths/call_pam.c because store_free is not used after store_malloc.

CVSS v3.0 7.5 HIGH

7.5^/10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://www.exim.org/static/doc/security/	Vendor Advisory
https://github.com/ivd38/exim_invalid_free	Exploit Patch Third Party Advisory
https://github.com/Exim/exim/compare/exim-4.95...exim-4.96	Release Notes Third Party Advisory
https://lists.exim.org/lurker/message/20220625.141825.d6de6074.en.html	Mailing List Release Notes Vendor Advisory
https://www.openwall.com/lists/oss-security/2022/08/06/1	Mailing List Third Party Advisory
https://github.com/Exim/exim/wiki/EximSecurity	Release Notes Third Party Advisory
https://cwe.mitre.org/data/definitions/762.html	Third Party Advisory
https://github.com/Exim/exim/commit/51be321b27825c01829dffd90f11bfff256f7e42	Patch Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LETR5CVDPFOFQHXCJP6NFLG52JZHQYDY/	Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XSWDF4QEXD4TDWQLYQOWCHBJKTDQR4Z7/	Mailing List Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:exim:exim:*:*:*:*:*:*:*:*

Configuration 2 (hide)

OR	cpe:2.3:o:fedoraproject:fedora:35:::::::*
	cpe:2.3:o:fedoraproject:fedora:36:::::::*

Information

Published : 2022-08-06 11:15

Updated : 2022-09-29 08:41

NVD link : CVE-2022-37451

Mitre link : CVE-2022-37451

JSON object : View

CWE

CWE-763

Release of Invalid Pointer or Reference

Products Affected

exim

exim

fedoraproject

fedora

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "https://www.exim.org/static/doc/security/", "name": "https://www.exim.org/static/doc/security/", "tags": ["Vendor Advisory"], "refsource": "MISC"}, {"url": "https://github.com/ivd38/exim_invalid_free", "name": "https://github.com/ivd38/exim_invalid_free", "tags": ["Exploit", "Patch", "Third Party Advisory"], "refsource": "MISC"}, {"url": "https://github.com/Exim/exim/compare/exim-4.95...exim-4.96", "name": "https://github.com/Exim/exim/compare/exim-4.95...exim-4.96", "tags": ["Release Notes", "Third Party Advisory"], "refsource": "MISC"}, {"url": "https://lists.exim.org/lurker/message/20220625.141825.d6de6074.en.html", "name": "https://lists.exim.org/lurker/message/20220625.141825.d6de6074.en.html", "tags": ["Mailing List", "Release Notes", "Vendor Advisory"], "refsource": "MISC"}, {"url": "https://www.openwall.com/lists/oss-security/2022/08/06/1", "name": "https://www.openwall.com/lists/oss-security/2022/08/06/1", "tags": ["Mailing List", "Third Party Advisory"], "refsource": "MISC"}, {"url": "https://github.com/Exim/exim/wiki/EximSecurity", "name": "https://github.com/Exim/exim/wiki/EximSecurity", "tags": ["Release Notes", "Third Party Advisory"], "refsource": "MISC"}, {"url": "https://cwe.mitre.org/data/definitions/762.html", "name": "https://cwe.mitre.org/data/definitions/762.html", "tags": ["Third Party Advisory"], "refsource": "MISC"}, {"url": "https://github.com/Exim/exim/commit/51be321b27825c01829dffd90f11bfff256f7e42", "name": "https://github.com/Exim/exim/commit/51be321b27825c01829dffd90f11bfff256f7e42", "tags": ["Patch", "Third Party Advisory"], "refsource": "MISC"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LETR5CVDPFOFQHXCJP6NFLG52JZHQYDY/", "name": "FEDORA-2022-1ca1d22165", "tags": ["Mailing List", "Third Party Advisory"], "refsource": "FEDORA"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XSWDF4QEXD4TDWQLYQOWCHBJKTDQR4Z7/", "name": "FEDORA-2022-f9a8388e62", "tags": ["Mailing List", "Third Party Advisory"], "refsource": "FEDORA"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "Exim before 4.96 has an invalid free in pam_converse in auths/call_pam.c because store_free is not used after store_malloc."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-763"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2022-37451", "ASSIGNER": "cve@mitre.org"}}, "impact": {"baseMetricV3": {"cvssV3": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}}, "publishedDate": "2022-08-06T18:15Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:exim:exim:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "4.96"}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}]}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2022-09-29T15:41Z"}

7.5 /10