Exim · Exim
CVE-2010-4345
Exim Privilege Escalation Vulnerability
What it is
Exim 4.72 and earlier allows local users to gain privileges by leveraging the ability of the exim user account to specify an alternate configuration file with a directive that contains arbitrary commands, as demonstrated by the spool_directory directive.
CISA: Exim allows local users to gain privileges by leveraging the ability of the exim user account to specify an alternate configuration file with a directive that contains arbitrary commands.
What to do
Apply updates per vendor instructions.
Deadline for US federal agencies: April 15, 2022
- Added to the CISA list
- March 25, 2022
- Published
- December 14, 2010
- Severity
- High 7.8 CVSS 3.1
- Chance of attacks in the next 30 days (EPSS)
- 18% in the top 2.8% of all known vulnerabilities
- Weakness
- CWE-264
- More details
- NVD · CVE.org · CISA
All references (20)
- http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00003.html
- http://www.redhat.com/support/errata/RHSA-2011-0153.html
- http://www.debian.org/security/2011/dsa-2154
- http://secunia.com/advisories/43128
- http://lists.exim.org/lurker/message/20101209.172233.abcba158.en.html
- http://www.kb.cert.org/vuls/id/758489
- http://www.exim.org/lurker/message/20101207.215955.bb32d4f2.en.html
- https://bugzilla.redhat.com/show_bug.cgi?id=662012
- http://www.vupen.com/english/advisories/2011/0364
- http://www.metasploit.com/modules/exploit/unix/smtp/exim4_string_format
- http://www.securityfocus.com/bid/45341
- http://secunia.com/advisories/42930
- http://secunia.com/advisories/42576
- http://secunia.com/advisories/43243
- http://www.securitytracker.com/id?1024859
- http://lists.exim.org/lurker/message/20101210.164935.385e04d0.en.html
- http://www.securityfocus.com/archive/1/515172/100/0/threaded
- http://www.theregister.co.uk/2010/12/11/exim_code_execution_peril/
- http://www.vupen.com/english/advisories/2011/0245
- http://www.vupen.com/english/advisories/2011/0135
More exploited flaws from Exim
| Added | Vulnerability | Product | Severity | Attack chance |
|---|---|---|---|---|
| Mar 25, 2022 | Heap-Based Buffer Overflow | Exim | Critical 9.8 | 72% |
| Nov 3, 2021 | Buffer Overflow | Exim | Critical 9.8 | 82% |
| Mar 3, 2022 | Out-of-bounds Write | Exim Internet Mailer | Critical 9.8 | 42% |
| Jan 10, 2022 | Improper Input Validation | Mail Transfer Agent (MTA) | Critical 9.0 | >99.9% |
Sources: Known Exploited Vulnerabilities (CISA, public domain), CVE records (cve.org) and EPSS (FIRST). The chance of attacks is the EPSS estimate that someone will try to exploit the flaw in the next 30 days.