# CVE-2001-1534: Weak cryptography in n/a

> Local attackers can predict Apache mod_usertrack session IDs to bypass authentication when this module is enabled.

- **Severity:** Low 2.1 (`AV:L/AC:L/Au:N/C:P/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 14 Jul 2005
- **Updated:** 17 Sep 2024
- **Also known as:** DEBIAN-CVE-2001-1534, GHSA-gp27-vhqc-jqvp

## What is CVE-2001-1534?

CVE-2001-1534 is a low-severity vulnerability in Apache Http Server, published on 14 Jul 2005. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

mod_usertrack in Apache 1.3.11 through 1.3.20 generates session ID's using predictable information including host IP address, system time and server process ID, which allows local users to obtain session ID's and bypass authentication when these session ID's are used for authentication.

Weakness: CWE-384 (Session Fixation)

## Which versions are affected by CVE-2001-1534?

It affects 1 product.


Products: Apache Http Server.

## How do I fix CVE-2001-1534?

No fix has been published for CVE-2001-1534 yet. Limit exposure of the affected software until one is available.

## Is CVE-2001-1534 being exploited?

There is no known exploitation of CVE-2001-1534 in the wild and no public exploit code.

## Other vulnerabilities in Apache Http Server

- [CVE-2021-42013](https://insights.sbomify.com/CVE-2021-42013/): Apache HTTP Server Path Traversal (critical 9.8, exploited in the wild)
- [CVE-2024-38475](https://insights.sbomify.com/CVE-2024-38475/): Apache HTTP Server Improper Escaping of Output (critical 9.1, exploited in the wild)
- [CVE-2021-40438](https://insights.sbomify.com/CVE-2021-40438/): Apache HTTP Server-Side Request Forgery (SSRF) (critical 9.0, exploited in the wild)
- [CVE-2019-0211](https://insights.sbomify.com/CVE-2019-0211/): Apache HTTP Server Privilege Escalation (high 7.8, exploited in the wild)
- [CVE-2021-41773](https://insights.sbomify.com/CVE-2021-41773/): Apache HTTP Server Path Traversal (high 7.5, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2001-1534 and fix it if it is affected.

What it is: CVE-2001-1534 is a low-severity vulnerability in Apache Http Server, published on 14 Jul 2005. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2001-1534 in the wild and no public exploit code.

Affected product: Apache Http Server. 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-2001-1534/ (Markdown: https://insights.sbomify.com/CVE-2001-1534/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2001-1534
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2001-1534
- OSV: https://osv.dev/vulnerability/CVE-2001-1534

---
From sbomify Insights: https://insights.sbomify.com/CVE-2001-1534/
Summaries are generated and may contain mistakes; the official description above is the record.