# CVE-2017-17382: Weak cryptography in n/a

> Remote attackers can decrypt TLS ciphertext data via a Bleichenbacher RSA padding oracle attack, compromising data confidentiality.

- **Severity:** Medium 5.9 (`CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/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:** 13 Dec 2017
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-fwq4-vph9-wfm2

## What is CVE-2017-17382?

CVE-2017-17382 is a medium-severity vulnerability in n/a, published on 13 Dec 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Citrix NetScaler Application Delivery Controller (ADC) and NetScaler Gateway 10.5 before build 67.13, 11.0 before build 71.22, 11.1 before build 56.19, and 12.0 before build 53.22 might allow remote attackers to decrypt TLS ciphertext data by leveraging a Bleichenbacher RSA padding oracle, aka a ROBOT attack.

Weakness: CWE-327 (Use of a Broken or Risky Cryptographic Algorithm)

## Which versions are affected by CVE-2017-17382?

It affects 2 products.


Products: Citrix Application Delivery Controller Firmware, Citrix Netscaler Gateway Firmware.

## How do I fix CVE-2017-17382?

No fix has been published for CVE-2017-17382 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-17382 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2017-17382 exists.

Public exploit code:

- Scanner for Bleichenbacher Oracle in RSA PKCS #1 v1.5 (metasploit)

## Other vulnerabilities in n/a

- [CVE-2022-27518](https://insights.sbomify.com/CVE-2022-27518/): Citrix Application Delivery Controller (ADC) and Gateway Authentication Bypass (critical 9.8, exploited in the wild)
- [CVE-2019-19781](https://insights.sbomify.com/CVE-2019-19781/): Citrix ADC, Gateway, and SD-WAN WANOP Appliance Code Execution (critical 9.8, exploited in the wild)
- [CVE-2020-8193](https://insights.sbomify.com/CVE-2020-8193/): Citrix ADC, Gateway, and SD-WAN WANOP Appliance Authorization Bypass (medium 6.5, exploited in the wild)
- [CVE-2020-8195](https://insights.sbomify.com/CVE-2020-8195/): Citrix ADC, Gateway, and SD-WAN WANOP Appliance Information Disclosure (medium 6.5, exploited in the wild)
- [CVE-2020-8196](https://insights.sbomify.com/CVE-2020-8196/): Citrix ADC, Gateway, and SD-WAN WANOP Appliance Information Disclosure (medium 4.3, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-17382 and fix it if it is affected.

What it is: CVE-2017-17382 is a medium-severity vulnerability in n/a, published on 13 Dec 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2017-17382 exists.

Affected product: n/a. 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-2017-17382/ (Markdown: https://insights.sbomify.com/CVE-2017-17382/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-17382
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-17382
- OSV: https://osv.dev/vulnerability/CVE-2017-17382

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From sbomify Insights: https://insights.sbomify.com/CVE-2017-17382/
Summaries are generated and may contain mistakes; the official description above is the record.