Critical severity · published Feb 14, 2018
CVE-2017-18187
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…
9.8
CVSS
3.1%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)3.1% · higher than 88% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
8.0; 9.0 · source: NVD
MT
Mbed Tls · Arm
before 2.7.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-18187
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-18187
Third Party Advisory
http://www.securityfocus.com/bid/103055
Third Party Advisory
https://github.com/ARMmbed/mbedtls/blob/master/ChangeLog
Patch
https://github.com/ARMmbed/mbedtls/commit/83c9f495ffe70c7dd280b41fdfd4881485a3bc28
Third Party Advisory
https://security.gentoo.org/glsa/201804-19
usn.ubuntu.com
https://usn.ubuntu.com/4267-1/
Third Party Advisory
https://www.debian.org/security/2018/dsa-4138
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