CVE-2012-4445: Buffer Overflow
First published: Wed Oct 10 2012(Updated: )
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.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| w1.fi hostapd | =0.6.0 | |
| w1.fi hostapd | =0.6.1 | |
| w1.fi hostapd | =0.6.2 | |
| w1.fi hostapd | =0.6.3 | |
| w1.fi hostapd | =0.6.4 | |
| w1.fi hostapd | =0.6.5 | |
| w1.fi hostapd | =0.6.6 | |
| w1.fi hostapd | =0.6.7 | |
| w1.fi hostapd | =0.7.0 | |
| w1.fi hostapd | =0.7.1 | |
| w1.fi hostapd | =0.7.2 | |
| w1.fi hostapd | =0.7.3 | |
| w1.fi hostapd | =1.0 |
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Reference Links
- http://osvdb.org/86051
- http://secunia.com/advisories/50805
- http://secunia.com/advisories/50888
- http://w1.fi/gitweb/gitweb.cgi?p=hostap.git%3Ba=commitdiff%3Bh=586c446e0ff42ae00315b014924ec669023bd8de
- http://www.debian.org/security/2012/dsa-2557
- http://www.freebsd.org/security/advisories/FreeBSD-SA-12:07.hostapd.asc
- http://www.mandriva.com/security/advisories?name=MDVSA-2012:168
- http://www.openwall.com/lists/oss-security/2012/10/08/3
- http://www.pre-cert.de/advisories/PRE-SA-2012-07.txt
- http://www.securityfocus.com/bid/55826
- http://www.securitytracker.com/id?1027808
- https://exchange.xforce.ibmcloud.com/vulnerabilities/79104
Frequently Asked Questions
What is the severity of CVE-2012-4445?
CVE-2012-4445 has been classified as a moderate severity vulnerability.
How do I fix CVE-2012-4445?
To fix CVE-2012-4445, upgrade hostapd to version 1.1 or later.
What systems are affected by CVE-2012-4445?
CVE-2012-4445 affects hostapd versions from 0.6.0 to 1.0.
What type of attack does CVE-2012-4445 facilitate?
CVE-2012-4445 allows remote attackers to cause a denial of service via specially crafted EAP-TLS messages.
What is the impact of exploiting CVE-2012-4445?
Exploiting CVE-2012-4445 can lead to a crash or abort of the hostapd service.
- agent/tags
- agent/references
- agent/first-publish-date
- agent/softwarecombine
- agent/last-modified-date
- agent/event
- agent/weakness
- agent/author
- agent/description
- agent/type
- agent/severity
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/w1.fi
- canonical/w1.fi hostapd
- version/w1.fi hostapd/0.6.0
- version/w1.fi hostapd/0.6.1
- version/w1.fi hostapd/0.6.2
- version/w1.fi hostapd/0.6.3
- version/w1.fi hostapd/0.6.4
- version/w1.fi hostapd/0.6.5
- version/w1.fi hostapd/0.6.6
- version/w1.fi hostapd/0.6.7
- version/w1.fi hostapd/0.7.0
- version/w1.fi hostapd/0.7.1
- version/w1.fi hostapd/0.7.2
- version/w1.fi hostapd/0.7.3
- version/w1.fi hostapd/1.0