# CVE-2005-2127: Memory corruption in n/a

> Remote attackers can crash Internet Explorer or execute arbitrary code by tricking users into visiting a malicious web page with unsafe COM objects.

- **Severity:** High 7.5 (`AV:N/AC:L/Au:N/C:P/I:P/A:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 19 Aug 2005
- **Updated:** 7 Aug 2024
- **Also known as:** GHSA-hfcp-c62f-pjm6

## What is CVE-2005-2127?

CVE-2005-2127 is a high-severity memory corruption vulnerability in Microsoft .Net Framework, published on 19 Aug 2005. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

Microsoft Internet Explorer 5.01, 5.5, and 6 allows remote attackers to cause a denial of service (application crash) and possibly execute arbitrary code via a web page with embedded CLSIDs that reference certain COM objects that are not intended for use within Internet Explorer, as originally demonstrated using the (1) DDS Library Shape Control (Msdds.dll) COM object, and other objects including (2) Blnmgrps.dll, (3) Ciodm.dll, (4) Comsvcs.dll, (5) Danim.dll, (6) Htmlmarq.ocx, (7) Mdt2dd.dll (as demonstrated using a heap corruption attack with uninitialized memory), (8) Mdt2qd.dll, (9) Mpg4ds32.ax, (10) Msadds32.ax, (11) Msb1esen.dll, (12) Msb1fren.dll, (13) Msb1geen.dll, (14) Msdtctm.dll, (15) Mshtml.dll, (16) Msoeacct.dll, (17) Msosvfbr.dll, (18) Mswcrun.dll, (19) Netshell.dll, (20) Ole2disp.dll, (21) Outllib.dll, (22) Psisdecd.dll, (23) Qdvd.dll, (24) Repodbc.dll, (25) Shdocvw.dll, (26) Shell32.dll, (27) Soa.dll, (28) Srchui.dll, (29) Stobject.dll, (30) Vdt70.dll, (31) Vmhelper.dll, and (32) Wbemads.dll, aka a variant of the "COM Object Instantiation Memory Corruption vulnerability."

Weakness: CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

## Which versions are affected by CVE-2005-2127?

It affects 6 products.


Products: Ati Catalyst Driver, Microsoft .Net Framework, Microsoft Office, Microsoft Project, Microsoft Visio, Microsoft Visual Studio .Net.

## How do I fix CVE-2005-2127?

No fix has been published for CVE-2005-2127 yet. Limit exposure of the affected software until one is available.

## Is CVE-2005-2127 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2005-2127 exists.

Public exploit code:

- Microsoft Visual Studio .NET - 'msdds.dll' Remote Code Execution (exploitdb)

## Other vulnerabilities in Microsoft .Net Framework

- [CVE-2005-4625](https://insights.sbomify.com/CVE-2005-4625/): Denial of service in n/a (high 7.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2005-2127 and fix it if it is affected.

What it is: CVE-2005-2127 is a high-severity memory corruption vulnerability in Microsoft .Net Framework, published on 19 Aug 2005. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2005-2127 exists.

Affected product: Microsoft .Net Framework. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2005-2127/ (Markdown: https://insights.sbomify.com/CVE-2005-2127/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2005-2127
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2005-2127
- OSV: https://osv.dev/vulnerability/CVE-2005-2127

---
From sbomify Insights: https://insights.sbomify.com/CVE-2005-2127/
Summaries are generated and may contain mistakes; the official description above is the record.