CVE-2010-4344
Summary
| CVE | CVE-2010-4344 |
|---|---|
| State | PUBLISHED |
| Assigner | redhat |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2010-12-14 16:00:04 UTC |
| Updated | 2026-04-21 20:31:04 UTC |
| Description | Heap-based buffer overflow in the string_vformat function in string.c in Exim before 4.70 allows remote attackers to execute arbitrary code via an SMTP session that includes two MAIL commands in conjunction with a large message containing crafted headers, leading to improper rejection logging. |
Risk And Classification
Primary CVSS: v3.1 9.8 CRITICAL from [email protected]
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.530640000 probability, percentile 0.979710000 (date 2026-04-23)
CISA KEV: Listed on 2022-03-25; due 2022-04-15; ransomware use Unknown
Problem Types: CWE-787 | n/a | CWE-787 CWE-787 Out-of-bounds Write
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Primary | 9.8 | CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| 3.1 | ADP | DECLARED | 9.8 | CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| 3.1 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | Secondary | 9.8 | CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| 2.0 | [email protected] | Primary | 9.3 | AV:N/AC:M/Au:N/C:C/I:C/A:C |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v2.0 Breakdown
Access Vector
NetworkAccess Complexity
MediumAuthentication
NoneConfidentiality
CompleteIntegrity
CompleteAvailability
CompleteAV:N/AC:M/Au:N/C:C/I:C/A:C
CISA Known Exploited Vulnerability
| Vendor | Exim |
|---|---|
| Product | Exim |
| Name | Exim Heap-Based Buffer Overflow Vulnerability |
| Required Action | Apply updates per vendor instructions. |
| Notes | https://nvd.nist.gov/vuln/detail/CVE-2010-4344 |
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Operating System | Canonical | Ubuntu Linux | 6.06 | All | All | All |
| Operating System | Canonical | Ubuntu Linux | 8.04 | All | All | All |
| Operating System | Canonical | Ubuntu Linux | 9.10 | All | All | All |
| Operating System | Debian | Debian Linux | 5.0 | All | All | All |
| Application | Exim | Exim | All | All | All | All |
| Operating System | Opensuse | Opensuse | 11.1 | All | All | All |
| Operating System | Opensuse | Opensuse | 11.2 | All | All | All |
| Operating System | Opensuse | Opensuse | 11.3 | All | All | All |
Vendor Declared Affected Products
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| Metasploit Penetration Testing Framework - Module Browser | af854a3a-2127-422b-91ae-364da2661108 | www.metasploit.com | Third Party Advisory |
| Atmail Blog | af854a3a-2127-422b-91ae-364da2661108 | atmail.com | Broken Link |
| Webmail : Solution de messagerie professionnelle - OVHcloud- OVH | af854a3a-2127-422b-91ae-364da2661108 | www.vupen.com | Broken Link, Vendor Advisory |
| oss-security - 21Nails: Multiple vulnerabilities in Exim | af854a3a-2127-422b-91ae-364da2661108 | www.openwall.com | Exploit, Mailing List |
| Bug 787 – memory corruption in string_format code | af854a3a-2127-422b-91ae-364da2661108 | bugs.exim.org | Issue Tracking, Patch |
| Ubuntu update for exim4 - Advisories - Community | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | Broken Link, Vendor Advisory |
| access.redhat.com | af854a3a-2127-422b-91ae-364da2661108 | www.redhat.com | Broken Link |
| Exim code-execution bug, now with root access • The Register | af854a3a-2127-422b-91ae-364da2661108 | www.theregister.co.uk | Press/Media Coverage |
| Red Hat update for exim - Advisories - Community | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | Broken Link, Vendor Advisory |
| Webmail : Solution de messagerie professionnelle - OVHcloud- OVH | af854a3a-2127-422b-91ae-364da2661108 | www.vupen.com | Broken Link, Vendor Advisory |
| Webmail : Solution de messagerie professionnelle - OVHcloud- OVH | af854a3a-2127-422b-91ae-364da2661108 | www.vupen.com | Broken Link |
| Webmail : Solution de messagerie professionnelle - OVHcloud- OVH | af854a3a-2127-422b-91ae-364da2661108 | www.vupen.com | Broken Link, Vendor Advisory |
| Re: [exim-dev] Remote root vulnerability in Exim | af854a3a-2127-422b-91ae-364da2661108 | lists.exim.org | Mailing List, Patch |
| [security-announce] SUSE Security Announcement: exim (SUSE-SA:2010:059) | af854a3a-2127-422b-91ae-364da2661108 | lists.opensuse.org | Mailing List, Third Party Advisory |
| SecurityTracker.com Archives - Exim Buffer Overfow in string_format() Lets Remote Users Execute Arbitrary Code | af854a3a-2127-422b-91ae-364da2661108 | www.securitytracker.com | Broken Link, Third Party Advisory, VDB Entry |
| Exim Crafted Header Remote Code Execution Vulnerability | af854a3a-2127-422b-91ae-364da2661108 | www.securityfocus.com | Broken Link, Third Party Advisory, VDB Entry |
| Webmail : Solution de messagerie professionnelle - OVHcloud- OVH | af854a3a-2127-422b-91ae-364da2661108 | www.vupen.com | Broken Link, Vendor Advisory |
| Webmail : Solution de messagerie professionnelle - OVHcloud- OVH | af854a3a-2127-422b-91ae-364da2661108 | www.vupen.com | Broken Link, Vendor Advisory |
| [exim-dev] Remote root vulnerability in Exim | af854a3a-2127-422b-91ae-364da2661108 | www.exim.org | Exploit, Mailing List |
| www.osvdb.org/69685 | af854a3a-2127-422b-91ae-364da2661108 | www.osvdb.org | Broken Link, Exploit, Patch |
| Exim Weaknesses and Buffer Overflow Vulnerability - Advisories - Community | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | Broken Link, Vendor Advisory |
| Debian -- Security Information -- DSA-2131-1 exim4 | af854a3a-2127-422b-91ae-364da2661108 | www.debian.org | Mailing List, Third Party Advisory |
| Debian update for exim4 - Advisories - Community | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | Broken Link, Vendor Advisory |
| SUSE update for exim - Advisories - Community | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | Broken Link, Vendor Advisory |
| www.cisa.gov/known-exploited-vulnerabilities-catalog | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | www.cisa.gov | US Government Resource |
| Bug 661756 – CVE-2010-4344 exim remote code execution flaw | af854a3a-2127-422b-91ae-364da2661108 | bugzilla.redhat.com | Exploit, Issue Tracking |
| SecurityFocus | af854a3a-2127-422b-91ae-364da2661108 | www.securityfocus.com | Broken Link, Third Party Advisory, VDB Entry |
| ftp.exim.org/pub/exim/ChangeLogs/ChangeLog-4.70 | af854a3a-2127-422b-91ae-364da2661108 | ftp.exim.org | Broken Link |
| US-CERT Vulnerability Note VU#682457 | af854a3a-2127-422b-91ae-364da2661108 | www.kb.cert.org | Third Party Advisory, US Government Resource |
| oss-security - Exim remote root | af854a3a-2127-422b-91ae-364da2661108 | openwall.com | Mailing List, Third Party Advisory |
| git.exim.org Git - exim.git/commit | af854a3a-2127-422b-91ae-364da2661108 | git.exim.org | Mailing List, Patch |
| USN-1032-1: Exim vulnerability | Ubuntu | af854a3a-2127-422b-91ae-364da2661108 | www.ubuntu.com | Third Party Advisory |
| Webmail : Solution de messagerie professionnelle - OVHcloud- OVH | af854a3a-2127-422b-91ae-364da2661108 | www.vupen.com | Broken Link, Vendor Advisory |
| Exim Remote Memory Corruption Vulnerability Notification (CVE-2010-4344) - cPanel Inc. | af854a3a-2127-422b-91ae-364da2661108 | www.cpanel.net | Broken Link |
| Red Hat Customer Portal | MITRE | access.redhat.com | |
| access.redhat.com | CVE-2010-4344 | MITRE | access.redhat.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
| CISA Known Exploited Vulnerabilities catalog | CISA | www.cisa.gov | kev |
No vendor comments have been submitted for this CVE.
Additional Advisory Data
| Source | Time | Event |
|---|---|---|
| ADP | 2022-03-25T00:00:00.000Z | CVE-2010-4344 added to CISA KEV |
There are currently no legacy QID mappings associated with this CVE.