Data Handling in Fedoraproject Fedora

1) Data Handling

EUVDB-ID: #VU40859

Risk: Medium

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

CVE-ID: CVE-2015-1827

CWE-ID: CWE-19 - Data Handling

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

The get_user_grouplist function in the extdom plug-in in FreeIPA before 4.1.4 does not properly reallocate memory when processing user accounts, which allows remote attackers to cause a denial of service (crash) via a group list request for a user that belongs to a large number of groups.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Fedora: 21 - 22

CPE2.3

• cpe:2.3:o:fedoraproject:fedora:21:*:*:*:*:*:*:*
• cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:*

External links

https://lists.fedoraproject.org/pipermail/package-announce/2015-April/154314.html
https://lists.fedoraproject.org/pipermail/package-announce/2015-March/154103.html
https://rhn.redhat.com/errata/RHSA-2015-0728.html
https://www.securityfocus.com/bid/73376
https://bugzilla.redhat.com/show_bug.cgi?id=1205200
https://fedorahosted.org/freeipa/ticket/4908

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.