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Vulnerability record · CVE-2011-0990 · published 13 April 2011

CVE-2011-0990: Mono race condition vulnerability

Mono · Mono

Race 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 3.99.3 is used, allows remote attackers to trigger a buffer overflow and modify internal data structures, and cause a denial of service (plugin crash) or corrupt the internal state of the security manager, via a crafted media file in which a thread makes a change after a type check but before a copy action.

5.8 CVSS 2.0 Medium EPSS 2.2% · top 18.5% CWE-362 · Race condition
5.8CVSS 2.0 base score
2.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
20References
16 Jun 2026Last modified by NVD

Description

Race 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 3.99.3 is used, allows remote attackers to trigger a buffer overflow and modify internal data structures, and cause a denial of service (plugin crash) or corrupt the internal state of the security manager, via a crafted media file in which a thread makes a change after a type check but before a copy action.

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/66625
https://github.com/mono/mono/commit/2f00e4bbb2137130845afb1b2a1e678552fc8e5c 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/66625
https://github.com/mono/mono/commit/2f00e4bbb2137130845afb1b2a1e678552fc8e5c 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-2011-0989Mono permissions and access controls vulnerabilityThe 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 properl…EPSS 2.7%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-2011-0990), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.