CVE-2010-4344

critical

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.

References

Advisories
More

http://www.ubuntu.com/usn/USN-1032-1

http://www.metasploit.com/modules/exploit/unix/smtp/exim4_string_format

http://www.kb.cert.org/vuls/id/682457

http://www.debian.org/security/2010/dsa-2131

http://openwall.com/lists/oss-security/2010/12/10/1

http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00003.html

http://www.theregister.co.uk/2010/12/11/exim_code_execution_peril/

http://lists.exim.org/lurker/message/20101210.164935.385e04d0.en.html

http://git.exim.org/exim.git/commit/24c929a27415c7cfc7126c47e4cad39acf3efa6b

http://bugs.exim.org/show_bug.cgi?id=787

Details

Source: Mitre, NVD

Published: 2010-12-14

Updated: 2025-04-11

Known Exploited Vulnerability (KEV)

Risk Information

CVSS v2

Base Score: 9.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

EPSS

EPSS: 0.57471