Microsoft Silverlight 5 before 5.1.20913.0 does not properly validate pointers during access to Silverlight elements, which allows remote at
Affects Microsoft Silverlight 5 builds before 5.1.20913.0, including the Silverlight 5 Developer Runtime on Mac and on supported Microsoft Windows clients and servers.
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Listed in CISA KEV
- How many real-world setups can hit the bug, from the vendor's advisory and CISA data. It does not know your setup.What do these mean? →
- Actively exploited
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
Microsoft Silverlight 5 is affected, allowing remote attackers to read sensitive information from a system. The flaw is triggered by a specially crafted Silverlight application that takes advantage of improper pointer validation when accessing Silverlight elements.
Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.
Read the original description
Microsoft Silverlight 5 before 5.1.20913.0 does not properly validate pointers during access to Silverlight elements, which allows remote attackers to obtain sensitive information via a crafted Silverlight application, aka "Silverlight Vulnerability."
Timeline
- CVE published
- Added to CISA KEV
CISA has evidence of exploitation in the wild
- CISA remediation deadline
Due date for US federal agencies to patch
- Record last updated
- EPSS reached 10%
FIRST estimates at least a 10% chance of exploitation in the next 30 days
Affected versions
- n/a n/a
Version range not reported
References 4
docs.microsoft.com
oval.cisecurity.org
us-cert.gov
Questions about CVE-2013-3896
What does this mean?
Silverlight does not properly validate pointers when it accesses Silverlight elements. The advisory says this could allow information disclosure, meaning an attacker could obtain sensitive information.Source: learn.microsoft.com
Am I affected, and how do I check?
Microsoft Silverlight 5 builds before 5.1.20913.0 are affected, on Mac and on supported Windows clients and servers, including the Silverlight 5 Developer Runtime. To check a machine, look up the installed Silverlight version and compare it with 5.1.20913.0.Source: learn.microsoft.com
What should I do about it?
Install Silverlight 5 build 5.1.20913.0 or later, the build the affected range stops before.Source: learn.microsoft.com
Is it being exploited?
Yes. CISA added it to its Known Exploited Vulnerabilities catalog on 2022-05-25, which means it has evidence of attacks. No public exploit code is tracked.Source: cisa.gov, cve.now feed data
What if there's no patch?
The checked facts list no workaround. The only step they support is limiting or removing the Silverlight 5 installation until a fixed build is installed, and they do not say how to do that.Source: learn.microsoft.com
Why do the sources disagree?
The description says the vulnerability is remotely exploitable, but the CVSS vector scores it as local access (AV:L). The sources conflict on the attack vector, and the checked facts do not resolve it.Source: learn.microsoft.com