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    CVE-2007-4924

    The Open Phone Abstraction Library (opal), as used by (1) Ekiga before 2.0.10 and (2) OpenH323 before 2.2.4, allows remote attackers to cause a denial of service (crash) via an invalid Content-Length header field in Session Initiation Protocol (SIP) packets, which causes a \0 byte to be written to an "attacker-controlled address."

    Published:Sep 17, 2007
    Last Modified:Apr 23, 2026
    EPS:Oct 8, 2007
    EPSS Score:0.22462
    CVSS Score:5

    Affected Products

    Vendor
    Ekiga
    Product
    Ekiga
    Vendor
    Openh323 Project
    Product
    Openh323
    Vendor
    Redhat
    Product
    Enterprise Linux

    Exploits

    https://www.exploit-db.com/exploits/9240

    Common Weakness Enumeration

    CWE-20 Improper Input Validation

    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

    CVE-2011-1830 (CVSS 5.7) — Ekiga versions before 3.3.0 attempted to load a module from /tmp/ekiga_test.so.…
    CVE-2013-1864 (CVSS 4.3) — The Portable Tool Library (aka PTLib) before 2.10.10, as used in Ekiga before 4.0.1, does not properly detect …
    CVE-2012-5621 (CVSS 5) — lib/engine/components/opal/opal-call.cpp in ekiga before 4.0.0 allows remote attackers to cause a denial of se…
    CVE-2007-4897 (CVSS 5) — pwlib, as used by Ekiga 2.0.5 and possibly other products, allows remote attackers to cause a denial of servic…
    CVE-2007-1006 (CVSS 10) — Multiple format string vulnerabilities in the gm_main_window_flash_message function in Ekiga before 2.0.5 allo…
    CVE-2007-1007 (CVSS 10) — Format string vulnerability in GnomeMeeting 1.0.2 and earlier allows remote attackers to cause a denial of ser…

    References

    http://lists.opensuse.org/opensuse-security-announce/2007-10/msg00006.html
    http://mail.gnome.org/archives/ekiga-list/2007-September/msg00103.html
    http://openh323.cvs.sourceforge.net/openh323/opal/src/sip/sippdu.cxx?r1=2.83.2.19&r2=2.83.2.20
    http://osvdb.org/41637
    http://secunia.com/advisories/27118
    http://secunia.com/advisories/27128
    http://secunia.com/advisories/27129
    http://secunia.com/advisories/27271
    http://secunia.com/advisories/27524
    http://secunia.com/advisories/28380
    http://www.mandriva.com/security/advisories?name=MDKSA-2007:205
    http://www.redhat.com/support/errata/RHSA-2007-0957.html
    http://www.s21sec.com/avisos/s21sec-037-en.txt
    http://www.securityfocus.com/archive/1/482120/30/4500/threaded
    http://www.securityfocus.com/bid/25955
    http://www.securitytracker.com/id?1018776
    http://www.ubuntu.com/usn/usn-562-1
    http://www.vupen.com/english/advisories/2007/3413
    http://www.vupen.com/english/advisories/2007/3414
    https://bugzilla.redhat.com/show_bug.cgi?id=296371
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11398
    https://www.exploit-db.com/exploits/9240
    http://lists.opensuse.org/opensuse-security-announce/2007-10/msg00006.html
    http://mail.gnome.org/archives/ekiga-list/2007-September/msg00103.html
    http://openh323.cvs.sourceforge.net/openh323/opal/src/sip/sippdu.cxx?r1=2.83.2.19&r2=2.83.2.20
    http://osvdb.org/41637
    http://secunia.com/advisories/27118
    http://secunia.com/advisories/27128
    http://secunia.com/advisories/27129
    http://secunia.com/advisories/27271
    http://secunia.com/advisories/27524
    http://secunia.com/advisories/28380
    http://www.mandriva.com/security/advisories?name=MDKSA-2007:205
    http://www.redhat.com/support/errata/RHSA-2007-0957.html
    http://www.s21sec.com/avisos/s21sec-037-en.txt
    http://www.securityfocus.com/archive/1/482120/30/4500/threaded
    http://www.securityfocus.com/bid/25955
    http://www.securitytracker.com/id?1018776
    http://www.ubuntu.com/usn/usn-562-1
    http://www.vupen.com/english/advisories/2007/3413
    http://www.vupen.com/english/advisories/2007/3414
    https://bugzilla.redhat.com/show_bug.cgi?id=296371
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11398
    https://www.exploit-db.com/exploits/9240

    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