RCE in Exim
CVE-2010-4345
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.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.180 (97.2th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 97.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.180 · newest: 0.180 · change: 0.000
Affected products
- Exim
- Canonical Ubuntu Linux — versions 6.06, 8.04, 9.10
- Debian Linux — versions 5.0
- openSUSE — versions 11.1, 11.2, 11.3
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply updates per vendor instructions.
Public proof-of-concept exploits
References
- secunia.com/advisories/43128 (Broken Link, third-party-advisory)
- lists.opensuse.org/opensuse-security-announce/2010-12/msg00003.html (vendor-advisory, Mailing List, Third Party Advisory)
- lists.exim.org/lurker/message/20101209.172233.abcba158.en.html (mailing-list, Patch, Mailing List)
- www.kb.cert.org/vuls/id/758489 (US Government Resource, Third Party Advisory, third-party-advisory)
- www.exim.org/lurker/message/20101207.215955.bb32d4f2.en.html (Vendor Advisory, mailing-list, Mailing List)
- bugzilla.redhat.com/show_bug.cgi (Patch, Issue Tracking)
- www.vupen.com/english/advisories/2011/0364 (vdb-entry, Broken Link)
- www.metasploit.com/modules/exploit/unix/smtp/exim4_string_format (Third Party Advisory)
- www.redhat.com/support/errata/RHSA-2011-0153.html (vendor-advisory, Broken Link)
- www.securityfocus.com/bid/45341 (VDB Entry, Third Party Advisory, vdb-entry, Broken Link)
Frequently asked questions
- What is CVE-2010-4345?
- CVE-2010-4345 is a high-severity vulnerability in Exim, classified under Command Injection. CVSS score: 7.8/10. Published 2010-12-14.
- How severe is CVE-2010-4345?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2010-4345 known to be exploited?
- Yes. CVE-2010-4345 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-03-25), indicating it is being actively exploited. 5 public proof-of-concept repositories are indexed.