#VU40651 Input validation error in Bugzilla - CVE-2015-4499

Vulnerability identifier: #VU40651

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2015-4499

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Bugzilla
Web applications / Other software

Vendor: Mozilla

Description

The vulnerability allows a remote non-authenticated attacker to read and manipulate data.

Util.pm in Bugzilla 2.x, 3.x, and 4.x before 4.2.15, 4.3.x and 4.4.x before 4.4.10, and 5.x before 5.0.1 mishandles long e-mail addresses during account registration, which allows remote attackers to obtain the default privileges for an arbitrary domain name by placing that name in a substring of an address, as demonstrated by truncation of an @mozilla.com.example.com address to an @mozilla.com address.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Bugzilla: 2.0 - 5.0

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External links
https://lists.fedoraproject.org/pipermail/package-announce/2015-October/168725.html
https://lists.fedoraproject.org/pipermail/package-announce/2015-October/169946.html
https://lists.fedoraproject.org/pipermail/package-announce/2015-October/169983.html
https://packetstormsecurity.com/files/133578/Bugzilla-Unauthorized-Account-Creation.html
https://seclists.org/bugtraq/2015/Sep/48
https://seclists.org/bugtraq/2015/Sep/49
https://www.securitytracker.com/id/1033542
https://bug1202447.bmoattachments.org/attachment.cgi?id=8657861
https://bugzilla.mozilla.org/show_bug.cgi?id=1202447

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.