CVE Feed

    Dashboard / CVE / CVE-2010-2023

    CVE-2010-2023

    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.

    Published:Jun 3, 2010
    Last Modified:Apr 11, 2025
    EPS:Jun 7, 2010
    EPSS Score:0.00113
    CVSS Score:4.4

    Affected Products

    Vendor
    Exim
    Product
    Exim

    Exploits

    No exploit reference

    Related CVEs

    CVE-2026-66141 (CVSS 7.4) — Exim before 4.99.5 allows .forward privilege escalation because force_command for a pipe transport is mishandl…
    CVE-2026-66140 (CVSS 8.4) — Exim before 4.99.5 allows directory traversal to access files outside of the spool area, and consequently gain…
    CVE-2026-48840 (CVSS 5.3) — Exim 4.88 before 4.99.4, in some proxy configurations, mishandles certain short payloads, leading to disclosur…
    CVE-2026-45185 (CVSS 9.8) — Exim before 4.99.3, in certain GnuTLS configurations, has a remotely reachable use-after-free in the BDAT body…
    CVE-2026-40686 (CVSS 3.7) — In Exim before 4.99.2, when utf8 operators are enabled, there is an out-of-bounds read if large UTF-8 trailing…
    CVE-2026-40684 (CVSS 5.9) — In Exim before 4.99.2, on systems using musl libc (not glibc), an attacker can crash the connection instance w…
    CVE-2026-40687 (CVSS 4.8) — In Exim before 4.99.2, when the SPA authentication driver is used with an adversarial SPA resource, there can …
    CVE-2026-40685 (CVSS 6.5) — In Exim before 4.99.2, when JSON lookup is enabled, an out-of-bounds heap write can occur when a JSON operator…
    CVE-2025-67896 (CVSS 7) — Exim before 4.99.1, with certain non-default rate-limit configurations, allows a remote heap-based buffer over…
    CVE-2025-53881 (CVSS 6.9) — A UNIX Symbolic Link (Symlink) Following vulnerability in logrotate config in the exim package allowed privile…

    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
    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
    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
    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
    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
    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

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High