Medium

Internet Explorer 8 ASLR Bypass

IdentifiersCVE-2015-0051CWE-693

CVE-2015-0051 is a security feature bypass vulnerability in Microsoft Internet Explorer 8 that allows a remote attacker to bypass Address Space Layout Randomization (ASLR) via a crafted website. Microsoft classifies it as an "Internet Explorer ASLR Bypass Vulnerability." The issue is addressed in Security Update 3034682, which includes fixes to improve Internet Explorer's implementation of the ASLR security feature. The provided content does not identify the specific vulnerable function or code path.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation allows an attacker to defeat ASLR protections in Internet Explorer 8, reducing the effectiveness of memory-randomization defenses. By itself, this does not directly provide arbitrary code execution, but it can significantly increase the reliability of a separate memory-corruption exploit by making memory layout more predictable. In practical attack chains, this can facilitate remote code execution in the context of the current user when combined with another exploitable vulnerability.

Mitigation

If you can’t patch tonight, do this now.

Limit exposure by reducing or preventing use of the affected Internet Explorer version, especially for browsing untrusted content. Use least-privilege accounts so that any chained post-exploitation impact is reduced. On Windows Server systems, Internet Explorer Enhanced Security Configuration reduces exposure to specially crafted web content. General mitigations include restricting access to attacker-controlled or untrusted websites and advertisements until the security update is applied.

Remediation

Patch, then assume compromise.

Apply Microsoft's Security Update 3034682 for the affected Internet Explorer version and platform. The bulletin states that the update improves Internet Explorer's implementation of ASLR to address security feature bypass issues. Where applicable to Internet Explorer 9, 10, and 11, Microsoft required installation of both updates 3021952 and 3034196 for full protection, but the provided content specifically identifies CVE-2015-0051 as affecting Internet Explorer 8.

PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType

Microsoft CorporationInternet Explorerapplication

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

ACTIVITY FEED

Recent activity

2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

2 SOURCESView more in app

microsoft technet subdomainNews

Mar 1, 2023

Microsoft Security Bulletin MS15-009 - Critical | Microsoft Learn

An ASLR bypass vulnerability in Internet Explorer that could allow an attacker to more reliably predict memory offsets and bypass a security protection when chained with another flaw.

microsoft technet subdomainNews

Mar 1, 2023

Microsoft Security Bulletin MS15-009 - Critical | Microsoft Learn

An ASLR bypass vulnerability in Internet Explorer that could allow an attacker to more reliably predict memory offsets and bypass a security protection when chained with another flaw.

What this page doesn’t show

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This page is what’s public. Mallory adds the parts that aren’t: which of your assets are affected, which adversaries are exploiting it right now, which detections to deploy, and what to do tonight.

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Exposure mapping

Query your assets running an affected version, and investigate the blast radius.

Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity

Community discussion across Reddit, Mastodon, and other social sources.

EXTERNAL REFERENCES

MITRE CVE

cve.org · CVE-2015-0051

NVD

nvd.nist.gov/vuln/detail/CVE-2015-0051

MITRE CWE · CWE-693

cwe.mitre.org

securityfocus.com

securityfocus.com/bid/72453

securitytracker.com

securitytracker.com/id/1031723

docs.microsoft.com

docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-009

Internet Explorer 8 ASLR Bypass

IdentifiersCVE-2015-0051CWE-693