Critical severity9.8CISA KEVNVD Advisory· Published Dec 14, 2010· Updated Jun 16, 2026
CVE-2010-4344
CVE-2010-4344
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
10cpe:2.3:o:canonical:ubuntu_linux:6.06:*:*:*:*:*:*:*+ 2 more
- 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:*:*:*:*:*:*:*
Patches
Vulnerability mechanics
References
34- bugs.exim.org/show_bug.cginvdIssue TrackingPatch
- git.exim.org/exim.git/commit/24c929a27415c7cfc7126c47e4cad39acf3efa6bnvdMailing ListPatch
- lists.exim.org/lurker/message/20101210.164935.385e04d0.en.htmlnvdMailing ListPatch
- www.exim.org/lurker/message/20101207.215955.bb32d4f2.en.htmlnvdExploitMailing List
- www.openwall.com/lists/oss-security/2021/05/04/7nvdExploitMailing List
- www.osvdb.org/69685nvdBroken LinkExploitPatch
- bugzilla.redhat.com/show_bug.cginvdExploitIssue Tracking
- lists.opensuse.org/opensuse-security-announce/2010-12/msg00003.htmlnvdMailing ListThird Party Advisory
- openwall.com/lists/oss-security/2010/12/10/1nvdMailing ListThird Party Advisory
- secunia.com/advisories/40019nvdBroken LinkVendor Advisory
- secunia.com/advisories/42576nvdBroken LinkVendor Advisory
- secunia.com/advisories/42586nvdBroken LinkVendor Advisory
- secunia.com/advisories/42587nvdBroken LinkVendor Advisory
- secunia.com/advisories/42589nvdBroken LinkVendor Advisory
- www.debian.org/security/2010/dsa-2131nvdMailing ListThird Party Advisory
- www.kb.cert.org/vuls/id/682457nvdThird Party AdvisoryUS Government Resource
- www.metasploit.com/modules/exploit/unix/smtp/exim4_string_formatnvdThird Party Advisory
- www.securityfocus.com/archive/1/515172/100/0/threadednvdBroken LinkThird Party AdvisoryVDB Entry
- www.securityfocus.com/bid/45308nvdBroken LinkThird Party AdvisoryVDB Entry
- www.securitytracker.com/idnvdBroken LinkThird Party AdvisoryVDB Entry
- www.ubuntu.com/usn/USN-1032-1nvdThird Party Advisory
- www.vupen.com/english/advisories/2010/3171nvdBroken LinkVendor Advisory
- www.vupen.com/english/advisories/2010/3172nvdBroken LinkVendor Advisory
- www.vupen.com/english/advisories/2010/3181nvdBroken LinkVendor Advisory
- www.vupen.com/english/advisories/2010/3186nvdBroken LinkVendor Advisory
- www.vupen.com/english/advisories/2010/3204nvdBroken LinkVendor Advisory
- www.vupen.com/english/advisories/2010/3246nvdBroken LinkVendor Advisory
- ftp.exim.org/pub/exim/ChangeLogs/ChangeLog-4.70nvdBroken Link
- atmail.com/blog/2010/atmail-6204-now-available/nvdBroken Link
- www.cpanel.net/2010/12/exim-remote-memory-corruption-vulnerability-notification-cve-2010-4344.htmlnvdBroken Link
- www.redhat.com/support/errata/RHSA-2010-0970.htmlnvdBroken Link
- www.theregister.co.uk/2010/12/11/exim_code_execution_peril/nvdPress/Media Coverage
- www.vupen.com/english/advisories/2010/3317nvdBroken Link
- www.cisa.gov/known-exploited-vulnerabilities-catalognvdUS Government Resource
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