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CVE-2010-2023

transports/appendfile.c in Exim before 4.72, when a world-writable sticky-bit mail directory is...

4.4 MediumFix available

CVE-2010-2023 is a medium vulnerability (CVSS 4.4) in Exim, published June 7, 2010. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.28%, the 20th percentile. Fixed in exim4 4.72-1.

What does this mean?
Severity
4.4 MediumCVSS 2.0, NVD
Exploit chance
0.28%EPSS, 20th percentile
Exploitation
None knownNot on CISA’s or ENISA’s lists
Fixed in
4.72-1exim4 +3 more

Description

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.

Exploit likelihood

0.28%Down 1.3 points since Feb 4, 2022
90%50%10%1%

Affected products

Affected packages

Affected packages
PackageAffectedFixed
exim4
Debian:12
before 4.72-1
4.72-1
exim4
Debian:13
before 4.72-1
4.72-1
exim4
Debian:14
before 4.72-1
4.72-1
exim
openSUSE:Tumbleweed
From an advisory covering 11 CVEs
before 4.86.2-2.2
4.86.2-2.2

What each source reports

NVD Score used4.4

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.

Record
CVE-2010-2023
CVSS 2.0
4.4 MediumAV:L/AC:M/Au:N/C:P/I:P/A:P
Weakness
CWE-362
Updated
2026-11-02
CVE ListNo score

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.

Record
CVE-2010-2023
Updated
2026-11-02
EUVDEUVD-2010-2043No score

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.

Record
EUVD-2010-2043
Updated
2026-11-03
GitHub AdvisoriesGHSA-qrcj-mq48-333mNo score

transports/appendfile.c in Exim before 4.72, when a world-writable sticky-bit mail directory is...

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.

Record
GHSA-qrcj-mq48-333m
Weakness
CWE-362
Updated
2026-11-02
OSVNo score

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.

Record
CVE-2010-2023
Updated
2026-11-02
OSVDEBIAN-CVE-2010-2023No score

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.

Record
DEBIAN-CVE-2010-2023
Updated
2026-11-02
OSVopenSUSE-SU-2024:10017-1No score

exim-4.86.2-2.2 on GA media

These are all security issues fixed in the exim-4.86.2-2.2 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:10017-1
Updated
2026-11-02

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

References

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