CVE-2012-5645

A denial of service flaw was found in the way the server component of Freeciv before 2.3.4 processed certain packets. A remote attacker could send a specially-crafted packet that, when processed would lead to memory exhaustion or excessive CPU consumption.

Weakness

The product does not properly control the allocation and maintenance of a limited resource.

Affected Software

Potential Mitigations

• Mitigation of resource exhaustion attacks requires that the target system either:

• The first of these solutions is an issue in itself though, since it may allow attackers to prevent the use of the system by a particular valid user. If the attacker impersonates the valid user, they may be able to prevent the user from accessing the server in question.

• The second solution is simply difficult to effectively institute – and even when properly done, it does not provide a full solution. It simply makes the attack require more resources on the part of the attacker.

Related Attack Patterns

• https://cwe.mitre.org/data/definitions/147.html
• https://cwe.mitre.org/data/definitions/227.html
• https://cwe.mitre.org/data/definitions/492.html

References

• http://lists.fedoraproject.org/pipermail/package-announce/2013-January/095378.html
• http://lists.fedoraproject.org/pipermail/package-announce/2013-January/095381.html
• http://lists.fedoraproject.org/pipermail/package-announce/2013-January/096391.html
• http://www.openwall.com/lists/oss-security/2012/12/18/5
• http://www.openwall.com/lists/oss-security/2012/12/22/4
• http://www.openwall.com/lists/oss-security/2012/12/30/11
• http://www.openwall.com/lists/oss-security/2012/12/30/8
• http://www.openwall.com/lists/oss-security/2012/12/31/2
• http://www.securityfocus.com/bid/41352
• https://access.redhat.com/security/cve/cve-2012-5645
• https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=696306
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2012-5645
• https://security-tracker.debian.org/tracker/CVE-2012-5645
• http://lists.fedoraproject.org/pipermail/package-announce/2013-January/095378.html
• http://lists.fedoraproject.org/pipermail/package-announce/2013-January/095381.html
• http://lists.fedoraproject.org/pipermail/package-announce/2013-January/096391.html
• http://www.openwall.com/lists/oss-security/2012/12/18/5
• http://www.openwall.com/lists/oss-security/2012/12/22/4
• http://www.openwall.com/lists/oss-security/2012/12/30/11
• http://www.openwall.com/lists/oss-security/2012/12/30/8
• http://www.openwall.com/lists/oss-security/2012/12/31/2
• http://www.securityfocus.com/bid/41352
• https://access.redhat.com/security/cve/cve-2012-5645
• https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=696306
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2012-5645
• https://security-tracker.debian.org/tracker/CVE-2012-5645