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    CVE-2014-3493

    The push_ascii function in smbd in Samba 3.6.x before 3.6.24, 4.0.x before 4.0.19, and 4.1.x before 4.1.9 allows remote authenticated users to cause a denial of service (memory corruption and daemon crash) via an attempt to read a Unicode pathname without specifying use of Unicode, leading to a character-set conversion failure that triggers an invalid pointer dereference.

    Published:Jun 23, 2014
    Last Modified:Apr 12, 2025
    EPS:Jun 23, 2014
    EPSS Score:0.02249
    CVSS Score:2.7

    Affected Products

    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Samba
    Product
    Samba

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-10 Buffer Overflow via Environment Variables
    CAPEC-100 Overflow Buffers
    CAPEC-120 Double Encoding
    CAPEC-123 Buffer Manipulation
    CAPEC-14 Client-side Injection-induced Buffer Overflow
    CAPEC-24 Filter Failure through Buffer Overflow
    CAPEC-267 Leverage Alternate Encoding
    CAPEC-3 Using Leading 'Ghost' Character Sequences to Bypass Input Filters
    CAPEC-42 MIME Conversion
    CAPEC-44 Overflow Binary Resource File
    CAPEC-45 Buffer Overflow via Symbolic Links
    CAPEC-46 Overflow Variables and Tags
    CAPEC-47 Buffer Overflow via Parameter Expansion
    CAPEC-52 Embedding NULL Bytes
    CAPEC-53 Postfix, Null Terminate, and Backslash
    CAPEC-64 Using Slashes and URL Encoding Combined to Bypass Validation Logic
    CAPEC-71 Using Unicode Encoding to Bypass Validation Logic
    CAPEC-72 URL Encoding
    CAPEC-78 Using Escaped Slashes in Alternate Encoding
    CAPEC-8 Buffer Overflow in an API Call
    CAPEC-80 Using UTF-8 Encoding to Bypass Validation Logic
    CAPEC-9 Buffer Overflow in Local Command-Line Utilities

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    References

    http://advisories.mageia.org/MGASA-2014-0279.html
    http://linux.oracle.com/errata/ELSA-2014-0866.html
    http://lists.fedoraproject.org/pipermail/package-announce/2014-August/136864.html
    http://lists.fedoraproject.org/pipermail/package-announce/2014-June/134717.html
    http://rhn.redhat.com/errata/RHSA-2014-0866.html
    http://secunia.com/advisories/59378
    http://secunia.com/advisories/59407
    http://secunia.com/advisories/59433
    http://secunia.com/advisories/59579
    http://secunia.com/advisories/59834
    http://secunia.com/advisories/59848
    http://secunia.com/advisories/59919
    http://secunia.com/advisories/61218
    http://security.gentoo.org/glsa/glsa-201502-15.xml
    http://www.mandriva.com/security/advisories?name=MDVSA-2014:136
    http://www.mandriva.com/security/advisories?name=MDVSA-2015:082
    http://www.samba.org/samba/security/CVE-2014-3493
    http://www.securityfocus.com/archive/1/532757/100/0/threaded
    http://www.securityfocus.com/bid/68150
    http://www.securitytracker.com/id/1030455
    https://blogs.oracle.com/sunsecurity/entry/multiple_vulnerabilities_in_samba1
    https://bugzilla.redhat.com/show_bug.cgi?id=1108748
    https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05115993
    http://advisories.mageia.org/MGASA-2014-0279.html
    http://linux.oracle.com/errata/ELSA-2014-0866.html
    http://lists.fedoraproject.org/pipermail/package-announce/2014-August/136864.html
    http://lists.fedoraproject.org/pipermail/package-announce/2014-June/134717.html
    http://rhn.redhat.com/errata/RHSA-2014-0866.html
    http://secunia.com/advisories/59378
    http://secunia.com/advisories/59407
    http://secunia.com/advisories/59433
    http://secunia.com/advisories/59579
    http://secunia.com/advisories/59834
    http://secunia.com/advisories/59848
    http://secunia.com/advisories/59919
    http://secunia.com/advisories/61218
    http://security.gentoo.org/glsa/glsa-201502-15.xml
    http://www.mandriva.com/security/advisories?name=MDVSA-2014:136
    http://www.mandriva.com/security/advisories?name=MDVSA-2015:082
    http://www.samba.org/samba/security/CVE-2014-3493
    http://www.securityfocus.com/archive/1/532757/100/0/threaded
    http://www.securityfocus.com/bid/68150
    http://www.securitytracker.com/id/1030455
    https://blogs.oracle.com/sunsecurity/entry/multiple_vulnerabilities_in_samba1
    https://bugzilla.redhat.com/show_bug.cgi?id=1108748
    https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05115993

    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