Mozilla Bugzilla 2.18.4

Bugzilla 2.x and 3.x before 3.4.14, 3.5.x and 3.6.x before 3.6.8, 3.7.x and 4.0.x before 4.0.4, and 4.1.x and 4.2.x before 4.2rc2 does not reject non-ASCII characters in e-mail addresses of new user accounts, which makes it easier for remote authenticated users to spoof other user accounts by choosing a similar e-mail address.

template/en/default/list/list.js.tmpl in Bugzilla 2.x and 3.x before 3.6.9, 3.7.x and 4.0.x before 4.0.6, and 4.1.x and 4.2.x before 4.2.1 does not properly handle multiple logins, which allows remote attackers to conduct cross-site scripting (XSS) attacks and obtain sensitive bug information via a crafted web page.

Multiple cross-site scripting (XSS) vulnerabilities in Bugzilla 2.18.x before 2.18.6, 2.20.x before 2.20.3, 2.22.x before 2.22.1, and 2.23.x before 2.23.3 allow remote authenticated users to inject arbitrary web script or HTML via (1) page headers using the H1, H2, and H3 HTML tags in global/header.html.tmpl, (2) description fields of certain items in various edit cgi scripts, and (3) the id parameter in showdependencygraph.cgi.

email_in.pl in Bugzilla 2.23.4, 3.0.x before 3.0.4, and 3.1.x before 3.1.4 allows remote authenticated users to more easily spoof the changer of a bug via a @reporter command in the body of an e-mail message, which overrides the e-mail address as normally obtained from the From e-mail header. NOTE: since From headers are easily spoofed, this only crosses privilege boundaries in environments that provide additional verification of e-mail addresses.

Bugzilla 2.x before 2.22.7, 3.0 before 3.0.7, 3.2 before 3.2.1, and 3.3 before 3.3.2 allows remote authenticated users to conduct cross-site scripting (XSS) and related attacks by uploading HTML and JavaScript attachments that are rendered by web browsers.

CRLF injection vulnerability in Bugzilla before 3.2.9, 3.4.x before 3.4.9, 3.6.x before 3.6.3, and 4.0.x before 4.0rc1, when Server Push is enabled in a web browser, allows remote attackers to inject arbitrary HTTP headers and content, and conduct HTTP response splitting attacks, via a crafted URL.