Vulnerability Details : 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.
Vulnerability category: OverflowDenial of service
Products affected by CVE-2015-5314
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:a:w1.fi:wpa_supplicant:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2015-5314
0.73%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 81 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2015-5314
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:N/I:N/A:P |
8.6
|
2.9
|
NIST | |
5.9
|
MEDIUM | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
2.2
|
3.6
|
NIST |
CWE ids for CVE-2015-5314
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The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.Assigned by: nvd@nist.gov (Primary)
References for CVE-2015-5314
-
https://www.debian.org/security/2015/dsa-3397
Debian -- Security Information -- DSA-3397-1 wpaThird Party Advisory
-
http://www.openwall.com/lists/oss-security/2015/11/10/10
oss-security - hostapd/wpa_supplicant: EAP-pwd missing last fragment length validationMailing List;Mitigation;Patch;Third Party Advisory
-
http://w1.fi/security/2015-7/eap-pwd-missing-last-fragment-length-validation.txt
Mitigation;Vendor Advisory
-
http://www.ubuntu.com/usn/USN-2808-1
USN-2808-1: wpa_supplicant and hostapd vulnerabilities | Ubuntu security noticesBroken Link
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