critical9.8Known exploitedPublic exploit code
CVE-2010-4344
Exim Heap-Based Buffer Overflow Vulnerability
Exploited in the wild
This vulnerability is on a Known Exploited Vulnerabilities catalogue, added 2022-03-25. Federal due date: 2022-04-15.
Apply updates per vendor instructions.
Public exploit code
Working exploit or proof of concept code has been published for this vulnerability. Treat unpatched systems as at risk.
- Exim4 < 4.69 - string_format Function Heap Buffer Overflow (Metasploit)2010-12-16 · remote · linux · Verified
- Exim 4.63 - Remote Command Execution2010-12-11 · remote · linux · Verified
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Exim | Exim | before 4.70 |
| Opensuse | Opensuse | Versions 11.1, 11.2, 11.3 |
| Debian | Debian Linux | Version 5.0 |
| Canonical | Ubuntu Linux | Versions 6.06, 8.04, 9.10 |
Weakness classification
References
- NVD record
- CVE.org record
- CISA KEV catalog
- http://atmail.com/blog/2010/atmail-6204-now-available/
- http://bugs.exim.org/show_bug.cgi?id=787
- http://git.exim.org/exim.git/commit/24c929a27415c7cfc7126c47e4cad39acf3efa6b
- http://lists.exim.org/lurker/message/20101210.164935.385e04d0.en.html
- http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00003.html
- http://openwall.com/lists/oss-security/2010/12/10/1
- http://secunia.com/advisories/40019
- http://secunia.com/advisories/42576
- http://secunia.com/advisories/42586
- http://secunia.com/advisories/42587
- http://secunia.com/advisories/42589
- http://www.cpanel.net/2010/12/exim-remote-memory-corruption-vulnerability-notification-cve-2010-4344.html
- http://www.debian.org/security/2010/dsa-2131
- http://www.exim.org/lurker/message/20101207.215955.bb32d4f2.en.html
- http://www.kb.cert.org/vuls/id/682457
- http://www.metasploit.com/modules/exploit/unix/smtp/exim4_string_format
- http://www.openwall.com/lists/oss-security/2021/05/04/7
- http://www.osvdb.org/69685
- http://www.redhat.com/support/errata/RHSA-2010-0970.html
- http://www.securityfocus.com/archive/1/515172/100/0/threaded
- http://www.securityfocus.com/bid/45308
- http://www.securitytracker.com/id?1024858
- http://www.theregister.co.uk/2010/12/11/exim_code_execution_peril/
- http://www.ubuntu.com/usn/USN-1032-1
- http://www.vupen.com/english/advisories/2010/3171