# CVE-2011-1213: Integer overflow in n/a

> Remote attackers can execute arbitrary code via a crafted .lzh attachment in IBM Lotus Notes, requiring user interaction to open the file.

- **Severity:** Critical 9.3 (`AV:N/AC:M/Au:N/C:C/I:C/A:C`)
- **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:** 31 May 2011
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-hjxm-p5wf-9v7p

## What is CVE-2011-1213?

CVE-2011-1213 is a critical vulnerability in Ibm Lotus Notes, published on 31 May 2011. 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

Integer underflow in lzhsr.dll in Autonomy KeyView, as used in IBM Lotus Notes before 8.5.2 FP3, allows remote attackers to execute arbitrary code via a crafted header in a .lzh attachment that triggers a stack-based buffer overflow, aka SPR PRAD88MJ2W.

Weakness: CWE-189

## Which versions are affected by CVE-2011-1213?

It affects 1 product.


Products: Ibm Lotus Notes.

## How do I fix CVE-2011-1213?

No fix has been published for CVE-2011-1213 yet. Limit exposure of the affected software until one is available.

## Is CVE-2011-1213 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2011-1213 exists.

Public exploit code:

- Lotus Notes 8.0.x - 8.5.2 FP2 - Autonomy Keyview (.lzh Attachment) (metasploit)
- Lotus Notes 8.0.x - 8.5.2 FP2 - Autonomy Keyview (.lzh Attachment) (metasploit)
- Lotus Notes 8.0.x < 8.5.2 FP2 - Autonomy Keyview ('.lzh' Attachment) (Metasploit) (exploitdb)

## Other vulnerabilities in Ibm Lotus Notes

- [CVE-2010-1608](https://insights.sbomify.com/CVE-2010-1608/): Memory corruption in n/a (critical 10.0)
- [CVE-2009-3032](https://insights.sbomify.com/CVE-2009-3032/): Integer overflow in n/a (critical 10.0)
- [CVE-2004-2281](https://insights.sbomify.com/CVE-2004-2281/): Other in n/a (critical 10.0)
- [CVE-2004-0480](https://insights.sbomify.com/CVE-2004-0480/): Command injection in n/a (critical 10.0)
- [CVE-2012-2174](https://insights.sbomify.com/CVE-2012-2174/): Code injection in n/a (critical 9.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2011-1213 and fix it if it is affected.

What it is: CVE-2011-1213 is a critical vulnerability in Ibm Lotus Notes, published on 31 May 2011. 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-2011-1213 exists.

Affected product: Ibm Lotus Notes. 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-2011-1213/ (Markdown: https://insights.sbomify.com/CVE-2011-1213/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2011-1213
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2011-1213
- OSV: https://osv.dev/vulnerability/CVE-2011-1213

---
From sbomify Insights: https://insights.sbomify.com/CVE-2011-1213/
Summaries are generated and may contain mistakes; the official description above is the record.