CVE-2022-37451

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

Exim versiones anteriores a 4.96, presenta una liberación no válida en el archivo pam_converse en auths/call_pam.c porque store_free no es usada después de store_malloc

*Credits: N/A

CVSS Scores

NISTv3.1 7.5

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2022-08-06 CVE Reserved
2022-08-06 CVE Published
2024-03-27 EPSS Updated
2024-08-03 CVE Updated
2024-08-03 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-763: Release of Invalid Pointer or Reference

CAPEC

References (10)

URL	Tag	Source
https://cwe.mitre.org/data/definitions/762.html	Third Party Advisory
https://github.com/Exim/exim/compare/exim-4.95...exim-4.96	Release Notes
https://github.com/Exim/exim/wiki/EximSecurity	Release Notes
https://www.openwall.com/lists/oss-security/2022/08/06/1	Mailing List

URL	Date	SRC
https://github.com/ivd38/exim_invalid_free	2024-08-03

URL	Date	SRC
https://github.com/Exim/exim/commit/51be321b27825c01829dffd90f11bfff256f7e42	2023-11-07

URL	Date	SRC
https://lists.exim.org/lurker/message/20220625.141825.d6de6074.en.html	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LETR5CVDPFOFQHXCJP6NFLG52JZHQYDY	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XSWDF4QEXD4TDWQLYQOWCHBJKTDQR4Z7	2023-11-07
https://www.exim.org/static/doc/security	2023-11-07

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Exim Search vendor "Exim"		Exim Search vendor "Exim" for product "Exim"				< 4.96 Search vendor "Exim" for product "Exim" and version " < 4.96"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				35 Search vendor "Fedoraproject" for product "Fedora" and version "35"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				36 Search vendor "Fedoraproject" for product "Fedora" and version "36"		-		Affected