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Vulnerability details: VCID-za15-an9s-gyby
Vulnerability ID VCID-za15-an9s-gyby
Aliases CVE-2017-18187
Summary In ARM mbed TLS before 2.7.0, there is a bounds-check bypass through an integer overflow in PSK identity parsing in the ssl_parse_client_psk_identity() function in library/ssl_srv.c.
Status Published
Exploitability 0.5
Weighted Severity 8.8
Risk 4.4
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-190 Integer Overflow or Wraparound
System Score Found at
epss 0.00563 https://api.first.org/data/v1/epss?cve=CVE-2017-18187
epss 0.00563 https://api.first.org/data/v1/epss?cve=CVE-2017-18187
epss 0.00563 https://api.first.org/data/v1/epss?cve=CVE-2017-18187
epss 0.00563 https://api.first.org/data/v1/epss?cve=CVE-2017-18187
epss 0.00563 https://api.first.org/data/v1/epss?cve=CVE-2017-18187
epss 0.00563 https://api.first.org/data/v1/epss?cve=CVE-2017-18187
epss 0.00563 https://api.first.org/data/v1/epss?cve=CVE-2017-18187
epss 0.00563 https://api.first.org/data/v1/epss?cve=CVE-2017-18187
epss 0.00593 https://api.first.org/data/v1/epss?cve=CVE-2017-18187
epss 0.00593 https://api.first.org/data/v1/epss?cve=CVE-2017-18187
epss 0.00593 https://api.first.org/data/v1/epss?cve=CVE-2017-18187
epss 0.00593 https://api.first.org/data/v1/epss?cve=CVE-2017-18187
epss 0.00593 https://api.first.org/data/v1/epss?cve=CVE-2017-18187
epss 0.00593 https://api.first.org/data/v1/epss?cve=CVE-2017-18187
epss 0.00593 https://api.first.org/data/v1/epss?cve=CVE-2017-18187
epss 0.00593 https://api.first.org/data/v1/epss?cve=CVE-2017-18187
epss 0.00593 https://api.first.org/data/v1/epss?cve=CVE-2017-18187
epss 0.00593 https://api.first.org/data/v1/epss?cve=CVE-2017-18187
epss 0.00593 https://api.first.org/data/v1/epss?cve=CVE-2017-18187
epss 0.00593 https://api.first.org/data/v1/epss?cve=CVE-2017-18187
epss 0.00593 https://api.first.org/data/v1/epss?cve=CVE-2017-18187
epss 0.00593 https://api.first.org/data/v1/epss?cve=CVE-2017-18187
epss 0.00593 https://api.first.org/data/v1/epss?cve=CVE-2017-18187
epss 0.00593 https://api.first.org/data/v1/epss?cve=CVE-2017-18187
epss 0.00593 https://api.first.org/data/v1/epss?cve=CVE-2017-18187
epss 0.00593 https://api.first.org/data/v1/epss?cve=CVE-2017-18187
epss 0.00593 https://api.first.org/data/v1/epss?cve=CVE-2017-18187
cvssv2 7.5 https://nvd.nist.gov/vuln/detail/CVE-2017-18187
cvssv3 9.8 https://nvd.nist.gov/vuln/detail/CVE-2017-18187
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2017-18187
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-18187
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-0487
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-0488
https://github.com/ARMmbed/mbedtls/blob/master/ChangeLog
https://github.com/ARMmbed/mbedtls/commit/83c9f495ffe70c7dd280b41fdfd4881485a3bc28
https://security.gentoo.org/glsa/201804-19
https://www.debian.org/security/2018/dsa-4138
https://www.debian.org/security/2018/dsa-4147
http://www.securityfocus.com/bid/103055
cpe:2.3:a:arm:mbed_tls:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:arm:mbed_tls:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
CVE-2017-18187 https://nvd.nist.gov/vuln/detail/CVE-2017-18187
USN-4267-1 https://usn.ubuntu.com/4267-1/
No exploits are available.
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2017-18187
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2017-18187
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.67397
EPSS Score 0.00563
Published At Sept. 9, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:29:02.652306+00:00 Alpine Linux Importer Import https://secdb.alpinelinux.org/edge/main.json 37.0.0