# CVE-2013-2273: Information disclosure in n/a

> Remote attackers can obtain sensitive information about transaction change due to predictable outputs in Bitcoin clients.

- **Severity:** Medium 5.0 (`AV:N/AC:L/Au:N/C:P/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 12 Mar 2013
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-7v78-w4g6-6c74

## What is CVE-2013-2273?

CVE-2013-2273 is a medium-severity vulnerability in Bitcoin Bitcoin Core, published on 12 Mar 2013. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

bitcoind and Bitcoin-Qt before 0.4.9rc1, 0.5.x before 0.5.8rc1, 0.6.0 before 0.6.0.11rc1, 0.6.1 through 0.6.5 before 0.6.5rc1, and 0.7.x before 0.7.3rc1 make it easier for remote attackers to obtain potentially sensitive information about returned change by leveraging certain predictability in the outputs of a Bitcoin transaction.

Weakness: CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor)

## Which versions are affected by CVE-2013-2273?

It affects 3 products.


Products: Bitcoin Bitcoin-Qt, Bitcoin Bitcoin Core, Bitcoin Bitcoind.

## How do I fix CVE-2013-2273?

No fix has been published for CVE-2013-2273 yet. Limit exposure of the affected software until one is available.

## Is CVE-2013-2273 being exploited?

There is no known exploitation of CVE-2013-2273 in the wild and no public exploit code.

## Other vulnerabilities in Bitcoin Bitcoin Core

- [CVE-2012-4684](https://insights.sbomify.com/CVE-2012-4684/): Denial of service in n/a (high 7.8)
- [CVE-2013-2292](https://insights.sbomify.com/CVE-2013-2292/): Denial of service in n/a (high 7.8)
- [CVE-2016-10724](https://insights.sbomify.com/CVE-2016-10724/): Denial of service in n/a (high 7.5)
- [CVE-2016-10725](https://insights.sbomify.com/CVE-2016-10725/): Business logic in n/a (high 7.5)
- [CVE-2012-1910](https://insights.sbomify.com/CVE-2012-1910/): Memory corruption in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2013-2273 and fix it if it is affected.

What it is: CVE-2013-2273 is a medium-severity vulnerability in Bitcoin Bitcoin Core, published on 12 Mar 2013. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2013-2273 in the wild and no public exploit code.

Affected product: Bitcoin Bitcoin Core. 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-2013-2273/ (Markdown: https://insights.sbomify.com/CVE-2013-2273/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2013-2273
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2013-2273
- OSV: https://osv.dev/vulnerability/CVE-2013-2273

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From sbomify Insights: https://insights.sbomify.com/CVE-2013-2273/
Summaries are generated and may contain mistakes; the official description above is the record.