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    CVE-2010-4528

    directconn.c in the MSN protocol plugin in libpurple 2.7.6 through 2.7.8 in Pidgin before 2.7.9 allows remote authenticated users to cause a denial of service (NULL pointer dereference and application crash) via a short p2pv2 packet in a DirectConnect (aka direct connection) session.

    Published:Dec 26, 2010
    Last Modified:Apr 11, 2025
    EPS:Jan 7, 2011
    EPSS Score:0.02691
    CVSS Score:4

    Affected Products

    Vendor
    Pidgin
    Product
    Libpurple
    Vendor
    Pidgin
    Product
    Pidgin

    Exploits

    No exploit reference

    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-2011-3594 (CVSS 4.3) — The g_markup_escape_text function in the SILC protocol plug-in in libpurple 2.10.0 and earlier, as used in Pid…
    CVE-2011-2943 (CVSS 4.3) — The irc_msg_who function in msgs.c in the IRC protocol plugin in libpurple 2.8.0 through 2.9.0 in Pidgin befor…
    CVE-2009-3084 (CVSS 5) — The msn_slp_process_msg function in libpurple/protocols/msn/slpcall.c in the MSN protocol plugin in libpurple …
    CVE-2009-2703 (CVSS 5) — libpurple/protocols/irc/msgs.c in the IRC protocol plugin in libpurple in Pidgin before 2.6.2 allows remote IR…
    CVE-2009-3085 (CVSS 5) — The XMPP protocol plugin in libpurple in Pidgin before 2.6.2 does not properly handle an error IQ stanza durin…
    CVE-2009-3083 (CVSS 5) — The msn_slp_sip_recv function in libpurple/protocols/msn/slp.c in the MSN protocol plugin in libpurple in Pidg…

    References

    http://developer.pidgin.im/viewmtn/revision/diff/e76f4ad4ef2f10588195a0eedc7a08f82062f79c/with/aaa07bde3c51d3684391ae6ed86b6dbaeab5d031/libpurple/protocols/msn/directconn.c
    http://developer.pidgin.im/viewmtn/revision/info/aaa07bde3c51d3684391ae6ed86b6dbaeab5d031
    http://lists.fedoraproject.org/pipermail/package-announce/2011-January/052862.html
    http://lists.fedoraproject.org/pipermail/package-announce/2011-January/052905.html
    http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00003.html
    http://pidgin.im/pipermail/support/2010-December/009251.html
    http://secunia.com/advisories/42732
    http://secunia.com/advisories/42824
    http://secunia.com/advisories/42877
    http://www.mandriva.com/security/advisories?name=MDVSA-2010:259
    http://www.openwall.com/lists/oss-security/2010/12/27/1
    http://www.openwall.com/lists/oss-security/2010/12/31/5
    http://www.pidgin.im/news/security/?id=49
    http://www.securityfocus.com/bid/45581
    http://www.vupen.com/english/advisories/2011/0028
    http://www.vupen.com/english/advisories/2011/0054
    http://www.vupen.com/english/advisories/2011/0076
    https://bugzilla.redhat.com/show_bug.cgi?id=665421
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18461
    http://developer.pidgin.im/viewmtn/revision/diff/e76f4ad4ef2f10588195a0eedc7a08f82062f79c/with/aaa07bde3c51d3684391ae6ed86b6dbaeab5d031/libpurple/protocols/msn/directconn.c
    http://developer.pidgin.im/viewmtn/revision/info/aaa07bde3c51d3684391ae6ed86b6dbaeab5d031
    http://lists.fedoraproject.org/pipermail/package-announce/2011-January/052862.html
    http://lists.fedoraproject.org/pipermail/package-announce/2011-January/052905.html
    http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00003.html
    http://pidgin.im/pipermail/support/2010-December/009251.html
    http://secunia.com/advisories/42732
    http://secunia.com/advisories/42824
    http://secunia.com/advisories/42877
    http://www.mandriva.com/security/advisories?name=MDVSA-2010:259
    http://www.openwall.com/lists/oss-security/2010/12/27/1
    http://www.openwall.com/lists/oss-security/2010/12/31/5
    http://www.pidgin.im/news/security/?id=49
    http://www.securityfocus.com/bid/45581
    http://www.vupen.com/english/advisories/2011/0028
    http://www.vupen.com/english/advisories/2011/0054
    http://www.vupen.com/english/advisories/2011/0076
    https://bugzilla.redhat.com/show_bug.cgi?id=665421
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18461

    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