CVE-2011-4962 Silverstripe CMS Arbitrary Code Execution

What is CVE-2011-4962?

CVE-2011-4962 is a medium-severity unsafe deserialization vulnerability in Silverstripe Silverstripe, published on 17 Sep 2012. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

code/sitefeatures/PageCommentInterface.php in SilverStripe 2.4.x before 2.4.6 might allow remote attackers to execute arbitrary code via a crafted cookie in a user comment submission, which is not properly handled when it is deserialized.

Weakness: CWE-20

Which versions are affected by CVE-2011-4962?

2 open source packages ship an affected version, including silverstripe/cms. It affects 1 product.

Products include Silverstripe Silverstripe.

How do I fix CVE-2011-4962?

Upgrade silverstripe/cms to 2.4.6 or later.

Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.

Is CVE-2011-4962 being exploited?

There is no known exploitation of CVE-2011-4962 in the wild and no public exploit code.

Other vulnerabilities in Silverstripe Silverstripe

• CVE-2007-2321 Other in n/a Critical 10.0
• CVE-2019-12204 Missing warning can lead to unauthenticated admin access in SilverStripe Critical 9.8
• CVE-2019-5715 Silverstripe Framework SQLi Vulnerability Critical 9.8
• CVE-2019-12437 Silverstripe CSRF Protection Bypass via GraphQL High 8.8
• CVE-2020-6164 Silverstripe CMS information disclosure High 7.5

All Silverstripe Silverstripe vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-gv6c-59h4-9pmg.