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CVE-2010-4344Exim Heap-Based Buffer Overflow Vulnerability
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.
9.8 CRITICALEPSS 71.70%⚡ Known Exploited (CISA KEV)NVD: Analyzed
Overview
Severity
| Score | Severity | Version | Vector String |
|---|---|---|---|
| 9.8 | CRITICAL | 3.1NVD | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| 9.3 | HIGH | 2.0NVD | AV:N/AC:M/Au:N/C:C/I:C/A:C |
CISA required action
⚡ Known exploited · remediation due Apr 15, 2022
Apply updates per vendor instructions.
Details
- CVE ID
- CVE-2010-4344
- Status
- Analyzed
- Assigner (CNA)
- redhat
- Published
- Dec 14, 2010
- Last modified
- 2026-06-16 23:24 UTC
Affected Products
From NVD CPE configurations.
eximexim1 version range
- before 4.70
opensuseopensuse3 version ranges
- 11.1
- 11.2
- 11.3
debiandebian linux1 version range
- 5.0
canonicalubuntu linux3 version ranges
- 6.06
- 8.04
- 9.10
References
- ftp.exim.org ftp://ftp.exim.org/pub/exim/ChangeLogs/ChangeLog-4.70
- atmail.com http://atmail.com/blog/2010/atmail-6204-now-available/
- bugs.exim.org http://bugs.exim.org/show_bug.cgi?id=787
- git.exim.org http://git.exim.org/exim.git/commit/24c929a27415c7cfc7126c47e4cad39acf3efa6b
- lists.exim.org http://lists.exim.org/lurker/message/20101210.164935.385e04d0.en.html
- lists.opensuse.org http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00003.html
- openwall.com http://openwall.com/lists/oss-security/2010/12/10/1
- secunia.com http://secunia.com/advisories/40019
- secunia.com http://secunia.com/advisories/42576
- secunia.com http://secunia.com/advisories/42586
- secunia.com http://secunia.com/advisories/42587
- secunia.com http://secunia.com/advisories/42589
- cpanel.net http://www.cpanel.net/2010/12/exim-remote-memory-corruption-vulnerability-notification-cve-2010-4344.html
- debian.org http://www.debian.org/security/2010/dsa-2131
- exim.org http://www.exim.org/lurker/message/20101207.215955.bb32d4f2.en.html
- kb.cert.org http://www.kb.cert.org/vuls/id/682457
- metasploit.com http://www.metasploit.com/modules/exploit/unix/smtp/exim4_string_format
- openwall.com http://www.openwall.com/lists/oss-security/2021/05/04/7
- osvdb.org http://www.osvdb.org/69685
- redhat.com http://www.redhat.com/support/errata/RHSA-2010-0970.html
- securityfocus.com http://www.securityfocus.com/archive/1/515172/100/0/threaded
- securityfocus.com http://www.securityfocus.com/bid/45308
- securitytracker.com http://www.securitytracker.com/id?1024858
- theregister.co.uk http://www.theregister.co.uk/2010/12/11/exim_code_execution_peril/
- ubuntu.com http://www.ubuntu.com/usn/USN-1032-1
- vupen.com http://www.vupen.com/english/advisories/2010/3171
- vupen.com http://www.vupen.com/english/advisories/2010/3172
- vupen.com http://www.vupen.com/english/advisories/2010/3181
- vupen.com http://www.vupen.com/english/advisories/2010/3186
- vupen.com http://www.vupen.com/english/advisories/2010/3204
- vupen.com http://www.vupen.com/english/advisories/2010/3246
- vupen.com http://www.vupen.com/english/advisories/2010/3317
- bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=661756
- cisa.gov https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2010-4344