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CVE-2010-2023

Good to know:

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Date: June 7, 2010

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.

Language: C

Severity Score

Related Resources (22)

http://bugs.exim.org/show_bug.cgi?id=988
http://lists.fedoraproject.org/pipermail/package-announce/2010-June/042587.html
http://secunia.com/advisories/40019
http://lists.exim.org/lurker/message/20100524.175925.9a69f755.en.html
http://www.securityfocus.com/archive/1/511653/100/0/threaded
http://www.securityfocus.com/bid/40451
http://lists.fedoraproject.org/pipermail/package-announce/2010-June/042613.html
http://archives.neohapsis.com/archives/fulldisclosure/2010-06/0079.html
http://www.ubuntu.com/usn/USN-1060-1
https://exchange.xforce.ibmcloud.com/vulnerabilities/59043
https://access.redhat.com/security/cve/CVE-2010-2023
http://www.vupen.com/english/advisories/2010/1402
http://secunia.com/advisories/43243
http://vcs.exim.org/viewvc/exim/exim-doc/doc-txt/ChangeLog?view=markup&pathrev=exim-4_72_RC2
http://lists.opensuse.org/opensuse-security-announce/2010-08/msg00001.html
https://people.canonical.com/~ubuntu-security/cve/CVE-2010-2023
http://vcs.exim.org/viewvc/exim/exim-src/src/transports/appendfile.c?r1=1.24&r2=1.25
https://bugzilla.redhat.com/show_bug.cgi?id=600093
https://nvd.nist.gov/vuln/detail/CVE-2010-2023
http://secunia.com/advisories/40123
http://www.vupen.com/english/advisories/2011/0364
https://www.mend.io/vulnerability-database/CVE-2010-2023

Severity Score

Weakness Type (CWE)

Race Conditions

CWE-362

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): LOW
Integrity (I): LOW
Availability (A): LOW

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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