VulnerabilityModified
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 library/ssl_srv.c.
CRITICAL 9.8EPSS 3.12%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.12%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.0
- 9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 3.12% probability · 87th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-190
- Affected
- arm/mbed tls · debian/debian linux
- Source
- cve@mitre.org
References
- http://www.securityfocus.com/bid/103055Third Party Advisory, VDB Entry
- https://github.com/ARMmbed/mbedtls/blob/master/ChangeLogThird Party Advisory
- https://github.com/ARMmbed/mbedtls/commit/83c9f495ffe70c7dd280b41fdfd4881485a3bc28Patch, Third Party Advisory
- https://security.gentoo.org/glsa/201804-19Third Party Advisory
- https://usn.ubuntu.com/4267-1/
- https://www.debian.org/security/2018/dsa-4138Third Party Advisory
- https://www.debian.org/security/2018/dsa-4147Third Party Advisory
- http://www.securityfocus.com/bid/103055Third Party Advisory, VDB Entry
- https://github.com/ARMmbed/mbedtls/blob/master/ChangeLogThird Party Advisory
- https://github.com/ARMmbed/mbedtls/commit/83c9f495ffe70c7dd280b41fdfd4881485a3bc28Patch, Third Party Advisory
- https://security.gentoo.org/glsa/201804-19Third Party Advisory
- https://usn.ubuntu.com/4267-1/
- https://www.debian.org/security/2018/dsa-4138Third Party Advisory
- https://www.debian.org/security/2018/dsa-4147Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.