{"id":"UBUNTU-CVE-2019-25544","details":"Pidgin 2.13.0 contains a denial of service vulnerability that allows local attackers to crash the application by providing an excessively long username string during account creation. Attackers can input a buffer of 1000 characters in the username field and trigger a crash when joining a chat, causing the application to become unavailable.","modified":"2026-05-20T16:03:51.547087590Z","published":"2026-03-21T13:16:00Z","upstream":["CVE-2019-25544"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2019-25544"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2019-25544"},{"type":"REPORT","url":"https://pidgin.im/"},{"type":"REPORT","url":"https://www.exploit-db.com/exploits/46930"},{"type":"REPORT","url":"https://www.vulncheck.com/advisories/pidgin-denial-of-service-via-malformed-username"}],"affected":[{"package":{"name":"pidgin","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/pidgin?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:2.10.7-0ubuntu4.1","1:2.10.7-0ubuntu4.2","1:2.10.9-0ubuntu1","1:2.10.9-0ubuntu2","1:2.10.9-0ubuntu3","1:2.10.9-0ubuntu3.1","1:2.10.9-0ubuntu3.2","1:2.10.9-0ubuntu3.3","1:2.10.9-0ubuntu3.4"],"ecosystem_specific":{"binaries":[{"binary_name":"finch","binary_version":"1:2.10.9-0ubuntu3.4"},{"binary_name":"libpurple-bin","binary_version":"1:2.10.9-0ubuntu3.4"},{"binary_name":"libpurple0","binary_version":"1:2.10.9-0ubuntu3.4"},{"binary_name":"pidgin","binary_version":"1:2.10.9-0ubuntu3.4"},{"binary_name":"pidgin-data","binary_version":"1:2.10.9-0ubuntu3.4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-25544.json"}},{"package":{"name":"pidgin","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/pidgin?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:2.10.11-0ubuntu4","1:2.10.11-0ubuntu5","1:2.10.12-0ubuntu1","1:2.10.12-0ubuntu2","1:2.10.12-0ubuntu3","1:2.10.12-0ubuntu4","1:2.10.12-0ubuntu5","1:2.10.12-0ubuntu5.1","1:2.10.12-0ubuntu5.2"],"ecosystem_specific":{"binaries":[{"binary_version":"1:2.10.12-0ubuntu5.2","binary_name":"finch"},{"binary_version":"1:2.10.12-0ubuntu5.2","binary_name":"libpurple-bin"},{"binary_version":"1:2.10.12-0ubuntu5.2","binary_name":"libpurple0"},{"binary_name":"pidgin","binary_version":"1:2.10.12-0ubuntu5.2"},{"binary_name":"pidgin-data","binary_version":"1:2.10.12-0ubuntu5.2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-25544.json"}},{"package":{"name":"pidgin","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/pidgin?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:2.12.0-1ubuntu2","1:2.12.0-1ubuntu4"],"ecosystem_specific":{"binaries":[{"binary_name":"finch","binary_version":"1:2.12.0-1ubuntu4"},{"binary_version":"1:2.12.0-1ubuntu4","binary_name":"libpurple-bin"},{"binary_name":"libpurple0","binary_version":"1:2.12.0-1ubuntu4"},{"binary_version":"1:2.12.0-1ubuntu4","binary_name":"pidgin"},{"binary_name":"pidgin-data","binary_version":"1:2.12.0-1ubuntu4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-25544.json"}},{"package":{"name":"pidgin","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/pidgin?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:2.13.0-2.2ubuntu1","1:2.13.0-2.2ubuntu2","1:2.13.0-2.2ubuntu3","1:2.13.0-2.2ubuntu4"],"ecosystem_specific":{"binaries":[{"binary_version":"1:2.13.0-2.2ubuntu4","binary_name":"finch"},{"binary_name":"libpurple-bin","binary_version":"1:2.13.0-2.2ubuntu4"},{"binary_version":"1:2.13.0-2.2ubuntu4","binary_name":"libpurple0"},{"binary_name":"pidgin","binary_version":"1:2.13.0-2.2ubuntu4"},{"binary_name":"pidgin-data","binary_version":"1:2.13.0-2.2ubuntu4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-25544.json"}},{"package":{"name":"pidgin","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/pidgin?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:2.14.1-1ubuntu1","1:2.14.8-1ubuntu1","1:2.14.8-1ubuntu2","1:2.14.8-1ubuntu2.1"],"ecosystem_specific":{"binaries":[{"binary_name":"finch","binary_version":"1:2.14.8-1ubuntu2.1"},{"binary_name":"libpurple-bin","binary_version":"1:2.14.8-1ubuntu2.1"},{"binary_name":"libpurple0","binary_version":"1:2.14.8-1ubuntu2.1"},{"binary_name":"pidgin","binary_version":"1:2.14.8-1ubuntu2.1"},{"binary_version":"1:2.14.8-1ubuntu2.1","binary_name":"pidgin-data"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-25544.json"}},{"package":{"name":"pidgin","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/pidgin?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:2.14.12-1ubuntu1","1:2.14.12-1ubuntu2","1:2.14.13-1ubuntu1","1:2.14.13-1ubuntu2"],"ecosystem_specific":{"binaries":[{"binary_name":"finch","binary_version":"1:2.14.13-1ubuntu2"},{"binary_name":"libpurpl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