CVE-2010-4344

9.8 CRITICAL CISA KEV - Actively Exploited
Published: December 14, 2010 Modified: October 22, 2025
View on NVD

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
ftp://ftp.exim.org/pub/exim/ChangeLogs/ChangeLog-4.70
Source: secalert@redhat.com
Broken Link
http://atmail.com/blog/2010/atmail-6204-now-available/
Source: secalert@redhat.com
Broken Link
http://bugs.exim.org/show_bug.cgi?id=787
Source: secalert@redhat.com
Issue Tracking Patch
http://git.exim.org/exim.git/commit/24c929a27415c7cfc7126c47e4cad39acf3efa6b
Source: secalert@redhat.com
Mailing List Patch
http://lists.exim.org/lurker/message/20101210.164935.385e04d0.en.html
Source: secalert@redhat.com
Mailing List Patch
http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00003.html
Source: secalert@redhat.com
Mailing List Third Party Advisory
http://openwall.com/lists/oss-security/2010/12/10/1
Source: secalert@redhat.com
Mailing List Third Party Advisory
http://secunia.com/advisories/40019
Source: secalert@redhat.com
Broken Link Vendor Advisory
http://secunia.com/advisories/42576
Source: secalert@redhat.com
Broken Link Vendor Advisory
http://secunia.com/advisories/42586
Source: secalert@redhat.com
Broken Link Vendor Advisory
http://secunia.com/advisories/42587
Source: secalert@redhat.com
Broken Link Vendor Advisory
http://secunia.com/advisories/42589
Source: secalert@redhat.com
Broken Link Vendor Advisory
http://www.cpanel.net/2010/12/exim-remote-memory-corruption-vulnerability-notification-cve-2010-4344.html
Source: secalert@redhat.com
Broken Link
http://www.debian.org/security/2010/dsa-2131
Source: secalert@redhat.com
Mailing List Third Party Advisory
http://www.exim.org/lurker/message/20101207.215955.bb32d4f2.en.html
Source: secalert@redhat.com
Exploit Mailing List
http://www.kb.cert.org/vuls/id/682457
Source: secalert@redhat.com
Third Party Advisory US Government Resource
http://www.metasploit.com/modules/exploit/unix/smtp/exim4_string_format
Source: secalert@redhat.com
Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/05/04/7
Source: secalert@redhat.com
Exploit Mailing List
http://www.osvdb.org/69685
Source: secalert@redhat.com
Broken Link Exploit Patch
http://www.redhat.com/support/errata/RHSA-2010-0970.html
Source: secalert@redhat.com
Broken Link
http://www.securityfocus.com/archive/1/515172/100/0/threaded
Source: secalert@redhat.com
Broken Link Third Party Advisory VDB Entry
http://www.securityfocus.com/bid/45308
Source: secalert@redhat.com
Broken Link Third Party Advisory VDB Entry
http://www.securitytracker.com/id?1024858
Source: secalert@redhat.com
Broken Link Third Party Advisory VDB Entry
http://www.theregister.co.uk/2010/12/11/exim_code_execution_peril/
Source: secalert@redhat.com
Press/Media Coverage
http://www.ubuntu.com/usn/USN-1032-1
Source: secalert@redhat.com
Third Party Advisory
http://www.vupen.com/english/advisories/2010/3171
Source: secalert@redhat.com
Broken Link Vendor Advisory
http://www.vupen.com/english/advisories/2010/3172
Source: secalert@redhat.com
Broken Link Vendor Advisory
http://www.vupen.com/english/advisories/2010/3181
Source: secalert@redhat.com
Broken Link Vendor Advisory
http://www.vupen.com/english/advisories/2010/3186
Source: secalert@redhat.com
Broken Link Vendor Advisory
http://www.vupen.com/english/advisories/2010/3204
Source: secalert@redhat.com
Broken Link Vendor Advisory
http://www.vupen.com/english/advisories/2010/3246
Source: secalert@redhat.com
Broken Link Vendor Advisory
http://www.vupen.com/english/advisories/2010/3317
Source: secalert@redhat.com
Broken Link
https://bugzilla.redhat.com/show_bug.cgi?id=661756
Source: secalert@redhat.com
Exploit Issue Tracking
ftp://ftp.exim.org/pub/exim/ChangeLogs/ChangeLog-4.70
Source: af854a3a-2127-422b-91ae-364da2661108
Broken Link
http://atmail.com/blog/2010/atmail-6204-now-available/
Source: af854a3a-2127-422b-91ae-364da2661108
Broken Link
http://bugs.exim.org/show_bug.cgi?id=787
Source: af854a3a-2127-422b-91ae-364da2661108
Issue Tracking Patch
http://git.exim.org/exim.git/commit/24c929a27415c7cfc7126c47e4cad39acf3efa6b
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List Patch
http://lists.exim.org/lurker/message/20101210.164935.385e04d0.en.html
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List Patch
http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00003.html
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List Third Party Advisory
http://openwall.com/lists/oss-security/2010/12/10/1
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List Third Party Advisory
http://secunia.com/advisories/40019
Source: af854a3a-2127-422b-91ae-364da2661108
Broken Link Vendor Advisory
http://secunia.com/advisories/42576
Source: af854a3a-2127-422b-91ae-364da2661108
Broken Link Vendor Advisory
http://secunia.com/advisories/42586
Source: af854a3a-2127-422b-91ae-364da2661108
Broken Link Vendor Advisory
http://secunia.com/advisories/42587
Source: af854a3a-2127-422b-91ae-364da2661108
Broken Link Vendor Advisory
http://secunia.com/advisories/42589
Source: af854a3a-2127-422b-91ae-364da2661108
Broken Link Vendor Advisory
http://www.cpanel.net/2010/12/exim-remote-memory-corruption-vulnerability-notification-cve-2010-4344.html
Source: af854a3a-2127-422b-91ae-364da2661108
Broken Link
http://www.debian.org/security/2010/dsa-2131
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List Third Party Advisory
http://www.exim.org/lurker/message/20101207.215955.bb32d4f2.en.html
Source: af854a3a-2127-422b-91ae-364da2661108
Exploit Mailing List
http://www.kb.cert.org/vuls/id/682457
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory US Government Resource
http://www.metasploit.com/modules/exploit/unix/smtp/exim4_string_format
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/05/04/7
Source: af854a3a-2127-422b-91ae-364da2661108
Exploit Mailing List
http://www.osvdb.org/69685
Source: af854a3a-2127-422b-91ae-364da2661108
Broken Link Exploit Patch
http://www.redhat.com/support/errata/RHSA-2010-0970.html
Source: af854a3a-2127-422b-91ae-364da2661108
Broken Link
http://www.securityfocus.com/archive/1/515172/100/0/threaded
Source: af854a3a-2127-422b-91ae-364da2661108
Broken Link Third Party Advisory VDB Entry
http://www.securityfocus.com/bid/45308
Source: af854a3a-2127-422b-91ae-364da2661108
Broken Link Third Party Advisory VDB Entry
http://www.securitytracker.com/id?1024858
Source: af854a3a-2127-422b-91ae-364da2661108
Broken Link Third Party Advisory VDB Entry
http://www.theregister.co.uk/2010/12/11/exim_code_execution_peril/
Source: af854a3a-2127-422b-91ae-364da2661108
Press/Media Coverage
http://www.ubuntu.com/usn/USN-1032-1
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
http://www.vupen.com/english/advisories/2010/3171
Source: af854a3a-2127-422b-91ae-364da2661108
Broken Link Vendor Advisory
http://www.vupen.com/english/advisories/2010/3172
Source: af854a3a-2127-422b-91ae-364da2661108
Broken Link Vendor Advisory
http://www.vupen.com/english/advisories/2010/3181
Source: af854a3a-2127-422b-91ae-364da2661108
Broken Link Vendor Advisory
http://www.vupen.com/english/advisories/2010/3186
Source: af854a3a-2127-422b-91ae-364da2661108
Broken Link Vendor Advisory
http://www.vupen.com/english/advisories/2010/3204
Source: af854a3a-2127-422b-91ae-364da2661108
Broken Link Vendor Advisory
http://www.vupen.com/english/advisories/2010/3246
Source: af854a3a-2127-422b-91ae-364da2661108
Broken Link Vendor Advisory
http://www.vupen.com/english/advisories/2010/3317
Source: af854a3a-2127-422b-91ae-364da2661108
Broken Link
https://bugzilla.redhat.com/show_bug.cgi?id=661756
Source: af854a3a-2127-422b-91ae-364da2661108
Exploit Issue Tracking
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2010-4344
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

67 reference(s) from NVD

Quick Stats

CVSS v3 Score
9.8 / 10.0
EPSS (Exploit Probability)
61.5%
98th percentile
Exploitation Status
Actively Exploited
Remediation due: 2022-04-15

Weaknesses (CWE)

CWE-787 CWE-787

Affected Vendors

debian exim canonical opensuse

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