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    CVE-2016-7796

    The manager_dispatch_notify_fd function in systemd allows local users to cause a denial of service (system hang) via a zero-length message received over a notify socket, which causes an error to be returned and the notification handler to be disabled.

    Published:Sep 28, 2016
    Last Modified:Apr 12, 2025
    EPS:Oct 13, 2016
    EPSS Score:0.00385
    CVSS Score:5.5

    Affected Products

    Vendor
    Novell
    Product
    Suse Linux Enterprise Desktop
    Vendor
    Novell
    Product
    Suse Linux Enterprise Server
    Vendor
    Novell
    Product
    Suse Linux Enterprise Server For Sap
    Vendor
    Novell
    Product
    Suse Linux Enterprise Software Development Kit
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Enterprise Linux Desktop
    Vendor
    Redhat
    Product
    Enterprise Linux Hpc Node
    Vendor
    Redhat
    Product
    Enterprise Linux Server
    Vendor
    Redhat
    Product
    Enterprise Linux Workstation
    Vendor
    Redhat
    Product
    Rhel Eus
    Vendor
    Systemd Project
    Product
    Systemd

    Exploits

    https://github.com/systemd/systemd/issues/4234#issuecomment-250441246https://www.agwa.name/blog/post/how_to_crash_systemd_in_one_tweethttps://github.com/systemd/systemd/issues/4234#issuecomment-250441246https://www.agwa.name/blog/post/how_to_crash_systemd_in_one_tweet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-10 Buffer Overflow via Environment Variables
    CAPEC-101 Server Side Include (SSI) Injection
    CAPEC-104 Cross Zone Scripting
    CAPEC-108 Command Line Execution through SQL Injection
    CAPEC-109 Object Relational Mapping Injection
    CAPEC-110 SQL Injection through SOAP Parameter Tampering
    CAPEC-120 Double Encoding
    CAPEC-13 Subverting Environment Variable Values
    CAPEC-135 Format String Injection
    CAPEC-136 LDAP Injection
    CAPEC-14 Client-side Injection-induced Buffer Overflow
    CAPEC-153 Input Data Manipulation
    CAPEC-182 Flash Injection
    CAPEC-209 XSS Using MIME Type Mismatch
    CAPEC-22 Exploiting Trust in Client
    CAPEC-23 File Content Injection
    CAPEC-230 Serialized Data with Nested Payloads
    CAPEC-231 Oversized Serialized Data Payloads
    CAPEC-24 Filter Failure through Buffer Overflow
    CAPEC-250 XML Injection
    CAPEC-261 Fuzzing for garnering other adjacent user/sensitive data
    CAPEC-267 Leverage Alternate Encoding
    CAPEC-28 Fuzzing
    CAPEC-3 Using Leading 'Ghost' Character Sequences to Bypass Input Filters
    CAPEC-31 Accessing/Intercepting/Modifying HTTP Cookies
    CAPEC-42 MIME Conversion
    CAPEC-43 Exploiting Multiple Input Interpretation Layers
    CAPEC-45 Buffer Overflow via Symbolic Links
    CAPEC-46 Overflow Variables and Tags
    CAPEC-47 Buffer Overflow via Parameter Expansion
    CAPEC-473 Signature Spoof
    CAPEC-52 Embedding NULL Bytes
    CAPEC-53 Postfix, Null Terminate, and Backslash
    CAPEC-588 DOM-Based XSS
    CAPEC-63 Cross-Site Scripting (XSS)
    CAPEC-64 Using Slashes and URL Encoding Combined to Bypass Validation Logic
    CAPEC-664 Server Side Request Forgery
    CAPEC-67 String Format Overflow in syslog()
    CAPEC-7 Blind SQL Injection
    CAPEC-71 Using Unicode Encoding to Bypass Validation Logic
    CAPEC-72 URL Encoding
    CAPEC-73 User-Controlled Filename
    CAPEC-78 Using Escaped Slashes in Alternate Encoding
    CAPEC-79 Using Slashes in Alternate Encoding
    CAPEC-8 Buffer Overflow in an API Call
    CAPEC-80 Using UTF-8 Encoding to Bypass Validation Logic
    CAPEC-81 Web Server Logs Tampering
    CAPEC-83 XPath Injection
    CAPEC-85 AJAX Footprinting
    CAPEC-88 OS Command Injection
    CAPEC-9 Buffer Overflow in Local Command-Line Utilities

    Related CVEs

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    CVE-2016-9960 (CVSS 5.5) — game-music-emu before 0.6.1 allows local users to cause a denial of service (divide by zero and process crash)…
    CVE-2016-9961 (CVSS 9.8) — game-music-emu before 0.6.1 mishandles unspecified integer values.…
    CVE-2016-5759 (CVSS 7.8) — The mkdumprd script called "dracut" in the current working directory "." allows local users to trick the admin…
    CVE-2016-4997 (CVSS 7.8) — The compat IPT_SO_SET_REPLACE and IP6T_SO_SET_REPLACE setsockopt implementations in the netfilter subsystem in…
    CVE-2015-8918 (CVSS 7.5) — The archive_string_append function in archive_string.c in libarchive before 3.2.0 allows remote attackers to c…
    CVE-2015-8920 (CVSS 5.5) — The _ar_read_header function in archive_read_support_format_ar.c in libarchive before 3.2.0 allows remote atta…
    CVE-2015-8921 (CVSS 7.5) — The ae_strtofflags function in archive_entry.c in libarchive before 3.2.0 allows remote attackers to cause a d…
    CVE-2015-8919 (CVSS 7.5) — The lha_read_file_extended_header function in archive_read_support_format_lha.c in libarchive before 3.2.0 all…
    CVE-2015-8922 (CVSS 5.5) — The read_CodersInfo function in archive_read_support_format_7zip.c in libarchive before 3.2.0 allows remote at…

    References

    http://lists.opensuse.org/opensuse-security-announce/2016-10/msg00015.html
    http://lists.opensuse.org/opensuse-security-announce/2016-10/msg00016.html
    http://rhn.redhat.com/errata/RHSA-2017-0003.html
    http://www.openwall.com/lists/oss-security/2016/09/30/1
    http://www.securityfocus.com/bid/93250
    http://www.securitytracker.com/id/1037320
    https://bugzilla.redhat.com/show_bug.cgi?id=1381911
    https://github.com/systemd/systemd/issues/4234#issuecomment-250441246
    https://rhn.redhat.com/errata/RHBA-2015-2092.html
    https://www.agwa.name/blog/post/how_to_crash_systemd_in_one_tweet
    http://lists.opensuse.org/opensuse-security-announce/2016-10/msg00015.html
    http://lists.opensuse.org/opensuse-security-announce/2016-10/msg00016.html
    http://rhn.redhat.com/errata/RHSA-2017-0003.html
    http://www.openwall.com/lists/oss-security/2016/09/30/1
    http://www.securityfocus.com/bid/93250
    http://www.securitytracker.com/id/1037320
    https://bugzilla.redhat.com/show_bug.cgi?id=1381911
    https://github.com/systemd/systemd/issues/4234#issuecomment-250441246
    https://rhn.redhat.com/errata/RHBA-2015-2092.html
    https://www.agwa.name/blog/post/how_to_crash_systemd_in_one_tweet

    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