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.

Published: 2019-12-30 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2012-5645 is rated Moderate Risk (59.5/100): CVSS High severity, with medium exploitation likelihood (EPSS 4.25%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2012-5645

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 6.12% 4.25% -1.87%
2 2025-04-26 11.35% 6.12% -5.22%
3 2025-03-30 — 11.35% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2012-5645

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 [email protected]
7.8 2.0 HIGH
AV:N/AC:L/Au:N/C:N/I:N/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:C)
Complete availability impact.
 10.0 6.9 [email protected]

Weakness enumeration for CVE-2012-5645

OS Trackers for CVE-2012-5645

vendor priority summary link
debian low CVE-2012-5645 low priority: Debian including 1 source packages (freeciv), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2012-5645
ubuntu medium CVE-2012-5645 medium priority: Ubuntu including 1 source packages (freeciv), 15 status rows across 15 suites (hardy, lucid, oneiric, precise, quantal, raring, saucy, trusty, upstream, utopic, vivid, wily, xenial, yakkety, zesty): not-affected 7, ignored 6, DNE 1, released 1. https://ubuntu.com/security/CVE-2012-5645

Affected software / configurations for CVE-2012-5645

Vendor Product Version Raw CPE
freeciv freeciv < 2.3.4 cpe:2.3:a:freeciv:freeciv:*:*:*:*:*:*:*:*
fedoraproject fedora 16 cpe:2.3:o:fedoraproject:fedora:16:*:*:*:*:*:*:*
fedoraproject fedora 17 cpe:2.3:o:fedoraproject:fedora:17:*:*:*:*:*:*:*
fedoraproject fedora 18 cpe:2.3:o:fedoraproject:fedora:18:*:*:*:*:*:*:*

References for CVE-2012-5645

URL Tags
http://lists.fedoraproject.org/pipermail/package-announce/2013-January/095378.html Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2013-January/095381.html Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2013-January/096391.html Third Party Advisory
http://www.openwall.com/lists/oss-security/2012/12/18/5 Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2012/12/22/4 Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2012/12/30/11 Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2012/12/30/8 Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2012/12/31/2 Mailing List Third Party Advisory
http://www.securityfocus.com/bid/41352 Third Party Advisory VDB Entry
https://access.redhat.com/security/cve/cve-2012-5645 Broken Link
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=696306 Issue Tracking Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2012-5645 Issue Tracking Third Party Advisory
https://security-tracker.debian.org/tracker/CVE-2012-5645 Third Party Advisory
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