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CVE-2011-1331

9.3 · HIGH

JustSystems Ichitaro 2005 through 2011, Ichitaro Government 6, Ichitaro Government 2006 through 2010, Ichitaro Portable, Ichitaro Pro, and Ichitaro Viewer allow remote attackers to execute arbitrar…

Published Jul 18, 2011justsystemsCWE-119EPSS 5.56%

Overview

CVE-2011-1331 is a high-severity vulnerability affecting justsystems ichitaro. It was published on July 18, 2011 and has a CVSS 2.0 base score of 9.3 (HIGH).

This vulnerability has a CVSS 2.0 base score of 9.3, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

JustSystems Ichitaro 2005 through 2011, Ichitaro Government 6, Ichitaro Government 2006 through 2010, Ichitaro Portable, Ichitaro Pro, and Ichitaro Viewer allow remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via a crafted document, as exploited in the wild in early 2011.

Remediation

Check the references section for vendor advisories and patches from justsystems. Update ichitaro to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus

References

Refjvn.jp/en/jp/JVN87239473/index.htmlRefjvndb.jvn.jp/jvndb/JVNDB-2011-000043Refsecunia.com/advisories/44956Refwww.justsystems.com/jp/info/js11001.htmlRefwww.securityfocus.com/bid/48283Refwww.symantec.com/connect/blogs/targeted-attacks-2011-using-ichitaro-zero-day-vulnerabilityRefexchange.xforce.ibmcloud.com/vulnerabilities/68072Refjvn.jp/en/jp/JVN87239473/index.htmlRefjvndb.jvn.jp/jvndb/JVNDB-2011-000043Refsecunia.com/advisories/44956

How CyberStrike helps

Frequently asked questions

What is CVE-2011-1331?

CVE-2011-1331 is a high-severity vulnerability affecting justsystems ichitaro. It was published on July 18, 2011 and has a CVSS 2.0 base score of 9.3 (HIGH).

How severe is CVE-2011-1331?

This vulnerability has a CVSS 2.0 base score of 9.3, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2011-1331?

Check the references section for vendor advisories and patches from justsystems. Update ichitaro to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2011-1331?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2011-1331 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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