CVE Feed

    Dashboard / CVE / CVE-2011-2943

    CVE-2011-2943

    The irc_msg_who function in msgs.c in the IRC protocol plugin in libpurple 2.8.0 through 2.9.0 in Pidgin before 2.10.0 does not properly validate characters in nicknames, which allows user-assisted remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a crafted nickname that is not properly handled in a WHO response.

    Published:Jul 20, 2011
    Last Modified:Apr 11, 2025
    EPS:Aug 29, 2011
    EPSS Score:0.03955
    CVSS Score:4.3

    Affected Products

    Vendor
    Pidgin
    Product
    Libpurple
    Vendor
    Pidgin
    Product
    Pidgin

    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-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-2010-4528 (CVSS 4) — directconn.c in the MSN protocol plugin in libpurple 2.7.6 through 2.7.8 in Pidgin before 2.7.9 allows remote …
    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/5749f9193063800d27bef75c2388f6f9cc2f7f37/with/5c2dba4a7e2e76b76e7f472b88953a4316706d43/libpurple/protocols/irc/msgs.c
    http://developer.pidgin.im/viewmtn/revision/info/5c2dba4a7e2e76b76e7f472b88953a4316706d43
    http://pidgin.im/news/security/?id=53
    http://secunia.com/advisories/45663
    http://secunia.com/advisories/45916
    http://securitytracker.com/id?1025961
    http://www.openwall.com/lists/oss-security/2011/08/20/2
    http://www.openwall.com/lists/oss-security/2011/08/22/2
    http://www.securityfocus.com/bid/49268
    https://bugzilla.redhat.com/show_bug.cgi?id=722939
    https://exchange.xforce.ibmcloud.com/vulnerabilities/69340
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18005
    http://developer.pidgin.im/viewmtn/revision/diff/5749f9193063800d27bef75c2388f6f9cc2f7f37/with/5c2dba4a7e2e76b76e7f472b88953a4316706d43/libpurple/protocols/irc/msgs.c
    http://developer.pidgin.im/viewmtn/revision/info/5c2dba4a7e2e76b76e7f472b88953a4316706d43
    http://pidgin.im/news/security/?id=53
    http://secunia.com/advisories/45663
    http://secunia.com/advisories/45916
    http://securitytracker.com/id?1025961
    http://www.openwall.com/lists/oss-security/2011/08/20/2
    http://www.openwall.com/lists/oss-security/2011/08/22/2
    http://www.securityfocus.com/bid/49268
    https://bugzilla.redhat.com/show_bug.cgi?id=722939
    https://exchange.xforce.ibmcloud.com/vulnerabilities/69340
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18005

    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