AEGLIX vulnerability intelligence
CVE-2010-4344
CRITICAL · CVSS 9.8 · Analyzed
Published: 2010-12-14 · Updated: 2026-06-16 · Source: NVD
Vulnerability overview
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.
Severity and scoring
- CVSS score
- 9.8 · CRITICAL
- CVSS version
- 3.1
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-787
CVSS measures technical severity; it does not establish whether this vulnerability is being exploited in your environment.
Known exploitation and remediation
Listed in CISA’s Known Exploited Vulnerabilities catalog.
- Affected product
- Exim · Exim
- Added to catalog
- 2022-03-25
- Required action
- Apply updates per vendor instructions.
- CISA remediation due date
- 2022-04-15
CISA deadlines apply to the organizations covered by its directives. Confirm your own remediation requirements.
Verify affected versions and patch availability in the vendor advisory before making changes.
Affected products and versions
cpe:2.3:a:exim:exim:*:*:*:*:*:*:*:*
Before (exclusive): 4.70
cpe:2.3:o:opensuse:opensuse:11.1:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:opensuse:11.2:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:opensuse:11.3:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:5.0:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:6.06:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:8.04:*:*:*:-:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:9.10:*:*:*:*:*:*:*
These are NVD CPE applicability entries. Some products depend on configuration conditions; consult the official record to confirm applicability.
Advisories and references
- http://atmail.com/blog/2010/atmail-6204-now-available/
Broken Link
- http://bugs.exim.org/show_bug.cgi?id=787
Issue Tracking · Patch
- http://git.exim.org/exim.git/commit/24c929a27415c7cfc7126c47e4cad39acf3efa6b
Mailing List · Patch
- http://lists.exim.org/lurker/message/20101210.164935.385e04d0.en.html
Mailing List · Patch
- http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00003.html
Mailing List · Third Party Advisory
- http://openwall.com/lists/oss-security/2010/12/10/1
Mailing List · Third Party Advisory
- http://secunia.com/advisories/40019
Broken Link · Vendor Advisory
- http://secunia.com/advisories/42576
Broken Link · Vendor Advisory
- http://secunia.com/advisories/42586
Broken Link · Vendor Advisory
- http://secunia.com/advisories/42587
Broken Link · Vendor Advisory
- http://secunia.com/advisories/42589
Broken Link · Vendor Advisory
- http://www.cpanel.net/2010/12/exim-remote-memory-corruption-vulnerability-notification-cve-2010-4344.html
Broken Link
- http://www.debian.org/security/2010/dsa-2131
Mailing List · Third Party Advisory
- http://www.exim.org/lurker/message/20101207.215955.bb32d4f2.en.html
Exploit · Mailing List
- http://www.kb.cert.org/vuls/id/682457
Third Party Advisory · US Government Resource
- http://www.metasploit.com/modules/exploit/unix/smtp/exim4_string_format
Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/05/04/7
Exploit · Mailing List
- http://www.osvdb.org/69685
Broken Link · Exploit · Patch
- http://www.redhat.com/support/errata/RHSA-2010-0970.html
Broken Link
- http://www.securityfocus.com/archive/1/515172/100/0/threaded
Broken Link · Third Party Advisory · VDB Entry
- http://www.securityfocus.com/bid/45308
Broken Link · Third Party Advisory · VDB Entry
- http://www.securitytracker.com/id?1024858
Broken Link · Third Party Advisory · VDB Entry
- http://www.theregister.co.uk/2010/12/11/exim_code_execution_peril/
Press/Media Coverage
- http://www.ubuntu.com/usn/USN-1032-1
Third Party Advisory
- http://www.vupen.com/english/advisories/2010/3171
Broken Link · Vendor Advisory
- http://www.vupen.com/english/advisories/2010/3172
Broken Link · Vendor Advisory
- http://www.vupen.com/english/advisories/2010/3181
Broken Link · Vendor Advisory
- http://www.vupen.com/english/advisories/2010/3186
Broken Link · Vendor Advisory
- http://www.vupen.com/english/advisories/2010/3204
Broken Link · Vendor Advisory
- http://www.vupen.com/english/advisories/2010/3246
Broken Link · Vendor Advisory
- http://www.vupen.com/english/advisories/2010/3317
Broken Link
- https://bugzilla.redhat.com/show_bug.cgi?id=661756
Exploit · Issue Tracking
- http://atmail.com/blog/2010/atmail-6204-now-available/
Broken Link
- http://bugs.exim.org/show_bug.cgi?id=787
Issue Tracking · Patch
- http://git.exim.org/exim.git/commit/24c929a27415c7cfc7126c47e4cad39acf3efa6b
Mailing List · Patch
- http://lists.exim.org/lurker/message/20101210.164935.385e04d0.en.html
Mailing List · Patch
- http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00003.html
Mailing List · Third Party Advisory
- http://openwall.com/lists/oss-security/2010/12/10/1
Mailing List · Third Party Advisory
- http://secunia.com/advisories/40019
Broken Link · Vendor Advisory
- http://secunia.com/advisories/42576
Broken Link · Vendor Advisory
- http://secunia.com/advisories/42586
Broken Link · Vendor Advisory
- http://secunia.com/advisories/42587
Broken Link · Vendor Advisory
- http://secunia.com/advisories/42589
Broken Link · Vendor Advisory
- http://www.cpanel.net/2010/12/exim-remote-memory-corruption-vulnerability-notification-cve-2010-4344.html
Broken Link
- http://www.debian.org/security/2010/dsa-2131
Mailing List · Third Party Advisory
- http://www.exim.org/lurker/message/20101207.215955.bb32d4f2.en.html
Exploit · Mailing List
- http://www.kb.cert.org/vuls/id/682457
Third Party Advisory · US Government Resource
- http://www.metasploit.com/modules/exploit/unix/smtp/exim4_string_format
Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/05/04/7
Exploit · Mailing List
- http://www.osvdb.org/69685
Broken Link · Exploit · Patch
- http://www.redhat.com/support/errata/RHSA-2010-0970.html
Broken Link
- http://www.securityfocus.com/archive/1/515172/100/0/threaded
Broken Link · Third Party Advisory · VDB Entry
- http://www.securityfocus.com/bid/45308
Broken Link · Third Party Advisory · VDB Entry
- http://www.securitytracker.com/id?1024858
Broken Link · Third Party Advisory · VDB Entry
- http://www.theregister.co.uk/2010/12/11/exim_code_execution_peril/
Press/Media Coverage
- http://www.ubuntu.com/usn/USN-1032-1
Third Party Advisory
- http://www.vupen.com/english/advisories/2010/3171
Broken Link · Vendor Advisory
- http://www.vupen.com/english/advisories/2010/3172
Broken Link · Vendor Advisory
- http://www.vupen.com/english/advisories/2010/3181
Broken Link · Vendor Advisory
- http://www.vupen.com/english/advisories/2010/3186
Broken Link · Vendor Advisory
- http://www.vupen.com/english/advisories/2010/3204
Broken Link · Vendor Advisory
- http://www.vupen.com/english/advisories/2010/3246
Broken Link · Vendor Advisory
- http://www.vupen.com/english/advisories/2010/3317
Broken Link
- https://bugzilla.redhat.com/show_bug.cgi?id=661756
Exploit · Issue Tracking
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2010-4344
US Government Resource