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Vulnerability record · CVE-2011-0989 · published 13 April 2011

CVE-2011-0989: Mono permissions and access controls vulnerability

Mono · Mono

The RuntimeHelpers.InitializeArray method in metadata/icall.c in Mono, when Moonlight 2.x before 2.4.1 or 3.x before 3.99.3 is used, does not properly restrict data types, which allows remote attackers to modify internal read-only data structures, and cause a denial of service (plugin crash) or corrupt the internal state of the security manager, via a crafted media file, as demonstrated by modifying a C# struct.

5.8 CVSS 2.0 Medium EPSS 2.7% · top 14.7% CWE-264 · Permissions and access controls
5.8CVSS 2.0 base score
2.7%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
20References
16 Jun 2026Last modified by NVD

Description

The RuntimeHelpers.InitializeArray method in metadata/icall.c in Mono, when Moonlight 2.x before 2.4.1 or 3.x before 3.99.3 is used, does not properly restrict data types, which allows remote attackers to modify internal read-only data structures, and cause a denial of service (plugin crash) or corrupt the internal state of the security manager, via a crafted media file, as demonstrated by modifying a C# struct.

AV:N/AC:M/Au:N/C:N/I:P/A:P

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.opensuse.org/opensuse-updates/2011-04/msg00024.html
http://openwall.com/lists/oss-security/2011/04/06/14 Patch
http://secunia.com/advisories/44002 Vendor Advisory
http://secunia.com/advisories/44076 Vendor Advisory
http://www.mono-project.com/Vulnerabilities
http://www.securityfocus.com/bid/47208
http://www.vupen.com/english/advisories/2011/0904 Vendor Advisory
https://bugzilla.novell.com/show_bug.cgi?id=667077 Patch
https://exchange.xforce.ibmcloud.com/vulnerabilities/66624
https://github.com/mono/mono/commit/035c8587c0d8d307e45f1b7171a0d337bb451f1e Patch
http://lists.opensuse.org/opensuse-updates/2011-04/msg00024.html
http://openwall.com/lists/oss-security/2011/04/06/14 Patch
http://secunia.com/advisories/44002 Vendor Advisory
http://secunia.com/advisories/44076 Vendor Advisory
http://www.mono-project.com/Vulnerabilities
http://www.securityfocus.com/bid/47208
http://www.vupen.com/english/advisories/2011/0904 Vendor Advisory
https://bugzilla.novell.com/show_bug.cgi?id=667077 Patch
https://exchange.xforce.ibmcloud.com/vulnerabilities/66624
https://github.com/mono/mono/commit/035c8587c0d8d307e45f1b7171a0d337bb451f1e Patch

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.5CVE-2010-4254Mono improper input validation vulnerabilityMono, when Moonlight before 2.3.0.1 or 2.99.x before 2.99.0.10 is used, does not properly validate arguments to generic methods, which allows remote …EPSS 14%7.5CVE-2007-5197Mono memory buffer overflow vulnerabilityBuffer overflow in the Mono.Math.BigInteger class in Mono 1.2.5.1 and earlier allows context-dependent attackers to execute arbitrary code via unspec…EPSS 3.6%6.9CVE-2010-4159Mono vulnerabilityUntrusted search path vulnerability in metadata/loader.c in Mono 2.8 and earlier allows local users to gain privileges via a Trojan horse shared libr…EPSS 0.35%6.8CVE-2011-0991Mono vulnerabilityUse-after-free vulnerability in Mono, when Moonlight 2.x before 2.4.1 or 3.x before 3.99.3 is used, allows remote attackers to cause a denial of serv…EPSS 2.9%6.2CVE-2006-5072Mono vulnerabilityThe System.CodeDom.Compiler classes in Novell Mono create temporary files with insecure permissions, which allows local users to overwrite arbitrary …EPSS 0.46%5.8CVE-2011-0990Mono race condition vulnerabilityRace condition in the FastCopy optimization in the Array.Copy method in metadata/icall.c in Mono, when Moonlight 2.x before 2.4.1 or 3.x before 3.99.…EPSS 2.2%5.8CVE-2011-0992Mono vulnerabilityUse-after-free vulnerability in Mono, when Moonlight 2.x before 2.4.1 or 3.x before 3.99.3 is used, allows remote attackers to cause a denial of serv…EPSS 2.7%5.0CVE-2010-4225Mono information exposure vulnerabilityUnspecified vulnerability in the mod_mono module for XSP in Mono 2.8.x before 2.8.2 allows remote attackers to obtain the source code for .aspx (ASP.…EPSS 1.5%

Source: NIST National Vulnerability Database (record CVE-2011-0989), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.