Vulnerability Monitor

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CVE-2015-5314

The eap_pwd_process function in eap_server/eap_server_pwd.c in hostapd 2.x before 2.6 does not validate that the reassembly buffer is large enough for the final fragment when used with (1) an internal EAP server or (2) a RADIUS server and EAP-pwd is enabled in a runtime configuration, which allows remote attackers to cause a denial of service (process termination) via a large final fragment in an EAP-pwd message.

Published

2018-02-21T16:29:00.287

Last Modified

2024-11-21T02:32:46.673

Status

Modified

Source

[email protected]

Severity

CVSSv3.0: 5.9 (MEDIUM)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:N/I:N/A:P

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

8.6

Impact Score

2.9

Weaknesses

Type: Primary
CWE-119

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	w1.fi	wpa_supplicant	< 2.6	Yes
Operating System	debian	debian_linux	8.0	Yes

References

http://w1.fi/security/2015-7/eap-pwd-missing-last-fragment-length-validation.txt Mitigation, Vendor Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2015/11/10/10 Mailing List, Mitigation, Patch, Third Party Advisory ([email protected])
http://www.ubuntu.com/usn/USN-2808-1 Broken Link ([email protected])
https://www.debian.org/security/2015/dsa-3397 Third Party Advisory ([email protected])
http://w1.fi/security/2015-7/eap-pwd-missing-last-fragment-length-validation.txt Mitigation, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2015/11/10/10 Mailing List, Mitigation, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.ubuntu.com/usn/USN-2808-1 Broken Link (af854a3a-2127-422b-91ae-364da2661108)
https://www.debian.org/security/2015/dsa-3397 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)