CVE Feed

    Dashboard / CVE / CVE-2009-4565

    CVE-2009-4565

    sendmail before 8.14.4 does not properly handle a '\0' character in a Common Name (CN) field of an X.509 certificate, which (1) allows man-in-the-middle attackers to spoof arbitrary SSL-based SMTP servers via a crafted server certificate issued by a legitimate Certification Authority, and (2) allows remote attackers to bypass intended access restrictions via a crafted client certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.

    Published:Dec 30, 2009
    Last Modified:Apr 23, 2026
    EPS:Jan 4, 2010
    EPSS Score:0.00771
    CVSS Score:7.5

    Affected Products

    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Sendmail
    Product
    Sendmail

    Exploits

    No exploit reference

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-77159 (CVSS 5.5) — A symlink-following flaw was found in libvirt's qemuTPMEmulatorPrepareHost() function. The function uses a pat…
    CVE-2026-88914 (CVSS 4.4) — A flaw was found in GStreamer's gst-plugins-good isomp4 plugin. When processing a specially crafted MP4 or MOV…
    CVE-2026-84828 (CVSS 6.5) — A flaw was found in PCS (Pacemaker Configuration System). A local attacker with membership in the 'haclient' g…
    CVE-2026-88859 (CVSS 6.3) — A flaw was found in Evolution. A remote attacker can exploit this vulnerability by sending a specially crafted…
    CVE-2026-18147 (CVSS 8.1) — A flaw was found in FreeIPA. An unauthenticated remote attacker could exploit a DOM Cross-Site Scripting (XSS)…
    CVE-2026-87853 (CVSS 7.5) — A flaw was found in SSSD's IdP authentication provider. The eval_access_token_buf() function compares the OIDC…
    CVE-2026-88924 (CVSS 7) — A flaw was found in the admin backend of gvfs. The privileged gvfsd-admin daemon changes the ownership of newl…
    CVE-2026-87876 (CVSS 3) — Two case-insensitive comparisons on request-derived usernames outside the main authorization path in CUPS's sc…
    CVE-2026-87875 (CVSS 4.3) — The cupsUTF32ToUTF8() function in CUPS's cups/transcode.c lacks a source-length bound and can read past the en…
    CVE-2026-87766 (CVSS 8.8) — A flaw was found in bubblewrap. During sandbox setup, creating files or directories under the new root can fol…

    References

    http://lists.opensuse.org/opensuse-security-announce/2010-03/msg00004.html
    http://marc.info/?l=bugtraq&m=126953289726317&w=2
    http://secunia.com/advisories/37998
    http://secunia.com/advisories/38314
    http://secunia.com/advisories/38915
    http://secunia.com/advisories/39088
    http://secunia.com/advisories/40109
    http://secunia.com/advisories/43366
    http://security.gentoo.org/glsa/glsa-201206-30.xml
    http://sunsolve.sun.com/search/document.do?assetkey=1-77-1021797.1-1
    http://www.debian.org/security/2010/dsa-1985
    http://www.redhat.com/support/errata/RHSA-2011-0262.html
    http://www.securityfocus.com/bid/37543
    http://www.sendmail.org/releases/8.14.4
    http://www.vupen.com/english/advisories/2009/3661
    http://www.vupen.com/english/advisories/2010/0719
    http://www.vupen.com/english/advisories/2010/1386
    http://www.vupen.com/english/advisories/2011/0415
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10255
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11822
    http://lists.opensuse.org/opensuse-security-announce/2010-03/msg00004.html
    http://marc.info/?l=bugtraq&m=126953289726317&w=2
    http://secunia.com/advisories/37998
    http://secunia.com/advisories/38314
    http://secunia.com/advisories/38915
    http://secunia.com/advisories/39088
    http://secunia.com/advisories/40109
    http://secunia.com/advisories/43366
    http://security.gentoo.org/glsa/glsa-201206-30.xml
    http://sunsolve.sun.com/search/document.do?assetkey=1-77-1021797.1-1
    http://www.debian.org/security/2010/dsa-1985
    http://www.redhat.com/support/errata/RHSA-2011-0262.html
    http://www.securityfocus.com/bid/37543
    http://www.sendmail.org/releases/8.14.4
    http://www.vupen.com/english/advisories/2009/3661
    http://www.vupen.com/english/advisories/2010/0719
    http://www.vupen.com/english/advisories/2010/1386
    http://www.vupen.com/english/advisories/2011/0415
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10255
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11822

    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