Microsoft Silverlight Information Disclosure Vulnerability
Exploited since 2022-05-25. No WAF vendor names it yet.
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."
Edge coverage
Claimed by vendorsAsk Vigil
AI · answers from this pageWorkers AI (Llama 3.3). Can be wrong: check the cited source.
Severity, decoded
CVSS 3.1Exploitable with local access, with no privileges and user interaction, leading to full loss of confidentiality.
How the score is built
- Attack vectorAn attacker needs local access, or must trick a user into opening something on the machine.Local
- Attack complexityNo special conditions are needed; the attack works reliably.Low
- Privileges requiredNo account or login is needed.None
- User interactionA user has to do something first, such as open a file or click a link.Required
- ScopeThe damage stays within the vulnerable component.Unchanged
- Confidentiality impactAn attacker can read all data the affected component holds, or the most sensitive parts of it.High
- Integrity impactData cannot be changed by the attacker.None
- Availability impactThe component keeps working normally.None
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:NAttackers are exploiting this in the wild.
At least one step needs hands-on work, which slows mass attacks.
A successful attack gives limited control over the affected software or limited access to its data.
Public exploits
2 found- MetasploitMS13-022 Microsoft Silverlight ScriptObject Unsafe Memory Access2013-03-12 · exploit · rank Normal
- Exploit-DBMicrosoft Silverlight - ScriptObject Unsafe Memory Access (MS13-022/MS13-087) (Metasploit)2013-03-12 · local · windows · verified
Links are to third-party code: never run it outside an isolated lab.
Timeline
- 2013-03-12Metasploit module publishedMS13-022 Microsoft Silverlight ScriptObject Unsafe Memory Access
- 2013-03-12Exploit published on Exploit-DBMicrosoft Silverlight - ScriptObject Unsafe Memory Access (MS13-022/MS13-087) (Metasploit)
- 2013-10-09CVE publishedCVE List
- 2022-05-25Added to CISA KEVConfirmed exploitation in the wild
Vendor statements
QuotedCloudflareWAF Managed Rules
The CVE predates the oldest entry in this vendor's public feed, so a rule may exist that we cannot see.
AWSAWS WAF Managed Rules
The CVE predates the oldest entry in this vendor's public feed, so a rule may exist that we cannot see.
Microsoft AzureFront Door and Application Gateway WAF (DRS)
We found no public statement from this vendor naming this CVE. That is not proof of no protection: generic rules may still catch it. The rule tables name CVEs but carry no dates, so Azure is left out of every time-to-rule figure.
Google CloudCloud Armor preconfigured WAF rules
The CVE predates the oldest entry in this vendor's public feed, so a rule may exist that we cannot see.
FastlyNext-Gen WAF virtual patches
The CVE predates the oldest entry in this vendor's public feed, so a rule may exist that we cannot see.
F5Attack signatures (Distributed Cloud WAF)
The CVE predates the oldest entry in this vendor's public feed, so a rule may exist that we cannot see.
AkamaiApp & API Protector (Adaptive Security Engine)
This vendor publishes no machine-readable rule changelog we can check.
OWASP CRSCore Rule Set (open source, used inside many WAFs)
The CVE predates the oldest entry in this vendor's public feed, so a rule may exist that we cannot see.
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