Vulnerability Details : CVE-2015-5315
The eap_pwd_process function in eap_peer/eap_pwd.c in wpa_supplicant 2.x before 2.6 does not validate that the reassembly buffer is large enough for the final fragment when EAP-pwd is enabled in a network configuration profile, 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
Exploit prediction scoring system (EPSS) score for CVE-2015-5315
Probability of exploitation activity in the next 30 days: 1.67%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 86 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2015-5315
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|
|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:N/I:N/A:P |
8.6
|
2.9
|
nvd@nist.gov |
|
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
|
nvd@nist.gov |
CWE ids for CVE-2015-5315
-
The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2015-5315
-
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;Patch;Third Party Advisory
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http://w1.fi/security/2015-7/eap-pwd-missing-last-fragment-length-validation.txt
Mitigation;Vendor Advisory
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http://www.ubuntu.com/usn/USN-2808-1
USN-2808-1: wpa_supplicant and hostapd vulnerabilities | Ubuntu security noticesBroken Link
Products affected by CVE-2015-5315
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:a:w1.fi:wpa_supplicant:*:*:*:*:*:*:*:*