CVE-2010-2023
MEDIUM · CVSS 4.4EPSS 0.3%EU EUVD
transports/appendfile.c in Exim before 4.72, when a world-writable sticky-bit mail directory is used, does not verify the st_nlink field of mailbox files, which allows local users to cause a denial of service or possibly gain privileges by creating a hard link to another user's file.
Key facts
- CVSS score
- 4.4 (v2.0)
- Severity
- MEDIUM
- CVSS vector
AV:L/AC:M/Au:N/C:P/I:P/A:P- Weakness (CWE)
- CWE-362
- EPSS score
- 0.3% (21th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2010-2043)
- Published
- June 7, 2010
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2010-2043 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.
View on the EU Vulnerability DatabaseAffected products
- exim / exim
- exim / exim
- exim / exim
- exim / exim
- exim / exim
- exim / exim
- exim / exim
- exim / exim
- exim / exim
- exim / exim
- exim / exim
- exim / exim
- exim / exim
- exim / exim
- exim / exim
- exim / exim
- exim / exim
- exim / exim
- exim / exim
- exim / exim
- exim / exim
- exim / exim
- exim / exim
- exim / exim
- exim / exim
- exim / exim
- exim / exim
- exim / exim
- exim / exim
- exim / exim
- exim / exim
- exim / exim
- exim / exim
References
- http://archives.neohapsis.com/archives/fulldisclosure/2010-06/0079.html
- http://bugs.exim.org/show_bug.cgi?id=988
- http://lists.exim.org/lurker/message/20100524.175925.9a69f755.en.html
- http://lists.fedoraproject.org/pipermail/package-announce/2010-June/042587.html
- http://lists.fedoraproject.org/pipermail/package-announce/2010-June/042613.html
- http://lists.opensuse.org/opensuse-security-announce/2010-08/msg00001.html
- http://secunia.com/advisories/40019(Vendor Advisory)
- http://secunia.com/advisories/40123
- http://secunia.com/advisories/43243
- http://vcs.exim.org/viewvc/exim/exim-doc/doc-txt/ChangeLog?view=markup&pathrev=exim-4_72_RC2
- http://vcs.exim.org/viewvc/exim/exim-src/src/transports/appendfile.c?r1=1.24&r2=1.25(Patch)
- http://www.securityfocus.com/archive/1/511653/100/0/threaded
- http://www.securityfocus.com/bid/40451
- http://www.ubuntu.com/usn/USN-1060-1
- http://www.vupen.com/english/advisories/2010/1402
- http://www.vupen.com/english/advisories/2011/0364
- https://bugzilla.redhat.com/show_bug.cgi?id=600093
- https://exchange.xforce.ibmcloud.com/vulnerabilities/59043
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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