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    CVE-2011-4939

    The pidgin_conv_chat_rename_user function in gtkconv.c in Pidgin before 2.10.2 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) by changing a nickname while in an XMPP chat room.

    Published:Jul 8, 2011
    Last Modified:Apr 11, 2025
    EPS:Mar 15, 2012
    EPSS Score:0.01102
    CVSS Score:6.4

    Affected Products

    Vendor
    Pidgin
    Product
    Pidgin

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-476 NULL Pointer Dereference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2019-25544 (CVSS 6.9) — Pidgin 2.13.0 contains a denial of service vulnerability that allows local attackers to crash the application …
    CVE-2022-26491 (CVSS 5.9) — An issue was discovered in Pidgin before 2.14.9. A remote attacker who can spoof DNS responses can redirect a …
    CVE-2017-2640 (CVSS 7.5) — An out-of-bounds write flaw was found in the way Pidgin before 2.12.0 processed XML content. A malicious remot…
    CVE-2016-2380 (CVSS 3.1) — An information leak exists in the handling of the MXIT protocol in Pidgin. Specially crafted MXIT data sent to…
    CVE-2016-4323 (CVSS 3.7) — A directory traversal exists in the handling of the MXIT protocol in Pidgin. Specially crafted MXIT data sent …
    CVE-2016-2374 (CVSS 8.1) — An exploitable memory corruption vulnerability exists in the handling of the MXIT protocol in Pidgin. Speciall…
    CVE-2016-2369 (CVSS 5.9) — A NULL pointer dereference vulnerability exists in the handling of the MXIT protocol in Pidgin. Specially craf…
    CVE-2016-2367 (CVSS 5.9) — An information leak exists in the handling of the MXIT protocol in Pidgin. Specially crafted MXIT data sent vi…
    CVE-2016-2368 (CVSS 8.1) — Multiple memory corruption vulnerabilities exist in the handling of the MXIT protocol in Pidgin. Specially cra…
    CVE-2016-2372 (CVSS 5.9) — An information leak exists in the handling of the MXIT protocol in Pidgin. Specially crafted MXIT data sent vi…

    References

    http://developer.pidgin.im/ticket/14392
    http://developer.pidgin.im/viewmtn/revision/diff/10ead4688e3af4132d454fa3bc241480500651c9/with/d1d77da56217f3a083e1d459bef054db9f1d5699/pidgin/gtkconv.c
    http://developer.pidgin.im/viewmtn/revision/info/d1d77da56217f3a083e1d459bef054db9f1d5699
    http://pidgin.im/news/security/?id=60
    http://www.mandriva.com/security/advisories?name=MDVSA-2012:029
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18406
    http://developer.pidgin.im/ticket/14392
    http://developer.pidgin.im/viewmtn/revision/diff/10ead4688e3af4132d454fa3bc241480500651c9/with/d1d77da56217f3a083e1d459bef054db9f1d5699/pidgin/gtkconv.c
    http://developer.pidgin.im/viewmtn/revision/info/d1d77da56217f3a083e1d459bef054db9f1d5699
    http://pidgin.im/news/security/?id=60
    http://www.mandriva.com/security/advisories?name=MDVSA-2012:029
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18406

    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