Vulnerability Name:

CVE-2022-37452 (CCN-233012)

Assigned:2021-08-06
Published:2021-08-06
Updated:2022-10-28
Summary: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.
CVSS v3 Severity:9.8 Critical (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
8.5 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
9.8 Critical (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
8.5 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:10.0 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-787
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2022-37452

Source: XF
Type: UNKNOWN
exim-cve202237452-bo(233012)

Source: CCN
Type: Exim GIT Repository
Fix host_name_lookup (Close 2747)

Source: MISC
Type: Patch, Third Party Advisory
https://github.com/Exim/exim/commit/d4bc023436e4cce7c23c5f8bb5199e178b4cc743

Source: MISC
Type: Patch, Release Notes, Third Party Advisory
https://github.com/Exim/exim/compare/exim-4.94...exim-4.95

Source: MISC
Type: Release Notes, Third Party Advisory
https://github.com/Exim/exim/wiki/EximSecurity

Source: MISC
Type: Exploit, Patch, Third Party Advisory
https://github.com/ivd38/exim_overflow

Source: MLIST
Type: Mailing List, Third Party Advisory
[debian-lts-announce] 20220827 [SECURITY] [DLA 3082-1] exim4 security update

Source: CCN
Type: Exim Web site
Exim

Source: MISC
Type: Vendor Advisory
https://www.exim.org/static/doc/security/

Source: CCN
Type: oss-sec Mailing List, Sat, 6 Aug 2022 22:46:42 +0300
Exim < 4.95 heap overflow

Source: MISC
Type: Mailing List, Third Party Advisory
https://www.openwall.com/lists/oss-security/2022/08/06/8

Vulnerable Configuration:Configuration 1:
  • cpe:/a:exim:exim:*:*:*:*:*:*:*:* (Version < 4.95)

    • Configuration 2:
  • cpe:/o:debian:debian_linux:10.0:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    exim exim *
    debian debian linux 10.0