7.5
HIGH
CVE-2022-37451
"Exim PAM Store Free Invalid Free"
Description

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.

INFO

Published Date :

Aug. 6, 2022, 6:15 p.m.

Last Modified :

Nov. 21, 2024, 7:15 a.m.

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2022-37451 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Fedoraproject fedora
1 Exim exim
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2022-37451.

URL Resource
https://cwe.mitre.org/data/definitions/762.html Third Party Advisory
https://github.com/Exim/exim/commit/51be321b27825c01829dffd90f11bfff256f7e42 Patch Third Party Advisory
https://github.com/Exim/exim/compare/exim-4.95...exim-4.96 Release Notes Third Party Advisory
https://github.com/Exim/exim/wiki/EximSecurity Release Notes Third Party Advisory
https://github.com/ivd38/exim_invalid_free Exploit Patch Third Party Advisory
https://lists.exim.org/lurker/message/20220625.141825.d6de6074.en.html Mailing List Release Notes Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LETR5CVDPFOFQHXCJP6NFLG52JZHQYDY/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XSWDF4QEXD4TDWQLYQOWCHBJKTDQR4Z7/
https://www.exim.org/static/doc/security/ Vendor Advisory
https://www.openwall.com/lists/oss-security/2022/08/06/1 Mailing List 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://github.com/Exim/exim/compare/exim-4.95...exim-4.96 Release Notes Third Party Advisory
https://github.com/Exim/exim/wiki/EximSecurity Release Notes Third Party Advisory
https://github.com/ivd38/exim_invalid_free Exploit Patch Third Party Advisory
https://lists.exim.org/lurker/message/20220625.141825.d6de6074.en.html Mailing List Release Notes Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LETR5CVDPFOFQHXCJP6NFLG52JZHQYDY/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XSWDF4QEXD4TDWQLYQOWCHBJKTDQR4Z7/
https://www.exim.org/static/doc/security/ Vendor Advisory
https://www.openwall.com/lists/oss-security/2022/08/06/1 Mailing List Third Party Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2022-37451 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2022-37451 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://cwe.mitre.org/data/definitions/762.html
    Added Reference https://github.com/Exim/exim/commit/51be321b27825c01829dffd90f11bfff256f7e42
    Added Reference https://github.com/Exim/exim/compare/exim-4.95...exim-4.96
    Added Reference https://github.com/Exim/exim/wiki/EximSecurity
    Added Reference https://github.com/ivd38/exim_invalid_free
    Added Reference https://lists.exim.org/lurker/message/20220625.141825.d6de6074.en.html
    Added Reference https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LETR5CVDPFOFQHXCJP6NFLG52JZHQYDY/
    Added Reference https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XSWDF4QEXD4TDWQLYQOWCHBJKTDQR4Z7/
    Added Reference https://www.exim.org/static/doc/security/
    Added Reference https://www.openwall.com/lists/oss-security/2022/08/06/1
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LETR5CVDPFOFQHXCJP6NFLG52JZHQYDY/ [No types assigned]
    Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XSWDF4QEXD4TDWQLYQOWCHBJKTDQR4Z7/ [No types assigned]
    Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/LETR5CVDPFOFQHXCJP6NFLG52JZHQYDY/
    Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/XSWDF4QEXD4TDWQLYQOWCHBJKTDQR4Z7/
  • Modified Analysis by [email protected]

    Sep. 29, 2022

    Action Type Old Value New Value
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/LETR5CVDPFOFQHXCJP6NFLG52JZHQYDY/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/LETR5CVDPFOFQHXCJP6NFLG52JZHQYDY/ Mailing List, Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/XSWDF4QEXD4TDWQLYQOWCHBJKTDQR4Z7/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/XSWDF4QEXD4TDWQLYQOWCHBJKTDQR4Z7/ Mailing List, Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Sep. 08, 2022

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/LETR5CVDPFOFQHXCJP6NFLG52JZHQYDY/ [No Types Assigned]
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/XSWDF4QEXD4TDWQLYQOWCHBJKTDQR4Z7/ [No Types Assigned]
  • Initial Analysis by [email protected]

    Aug. 11, 2022

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Changed Reference Type https://cwe.mitre.org/data/definitions/762.html No Types Assigned https://cwe.mitre.org/data/definitions/762.html Third Party Advisory
    Changed Reference Type https://github.com/Exim/exim/commit/51be321b27825c01829dffd90f11bfff256f7e42 No Types Assigned https://github.com/Exim/exim/commit/51be321b27825c01829dffd90f11bfff256f7e42 Patch, Third Party Advisory
    Changed Reference Type https://github.com/Exim/exim/compare/exim-4.95...exim-4.96 No Types Assigned https://github.com/Exim/exim/compare/exim-4.95...exim-4.96 Release Notes, Third Party Advisory
    Changed Reference Type https://github.com/Exim/exim/wiki/EximSecurity No Types Assigned https://github.com/Exim/exim/wiki/EximSecurity Release Notes, Third Party Advisory
    Changed Reference Type https://github.com/ivd38/exim_invalid_free No Types Assigned https://github.com/ivd38/exim_invalid_free Exploit, Patch, Third Party Advisory
    Changed Reference Type https://lists.exim.org/lurker/message/20220625.141825.d6de6074.en.html No Types Assigned https://lists.exim.org/lurker/message/20220625.141825.d6de6074.en.html Mailing List, Release Notes, Vendor Advisory
    Changed Reference Type https://www.exim.org/static/doc/security/ No Types Assigned https://www.exim.org/static/doc/security/ Vendor Advisory
    Changed Reference Type https://www.openwall.com/lists/oss-security/2022/08/06/1 No Types Assigned https://www.openwall.com/lists/oss-security/2022/08/06/1 Mailing List, Third Party Advisory
    Added CWE NIST CWE-763
    Added CPE Configuration OR *cpe:2.3:a:exim:exim:*:*:*:*:*:*:*:* versions up to (excluding) 4.96
  • CVE Modified by [email protected]

    Aug. 06, 2022

    Action Type Old Value New Value
    Added Reference https://github.com/Exim/exim/commit/51be321b27825c01829dffd90f11bfff256f7e42 [No Types Assigned]
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2022-37451 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2022-37451 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.45 }} 0.08%

score

0.74731

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability