CVE-2017-18187
polarssl - security update
9.8
CRITICAL
CVSS 3.1
EPSS 2.8%
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.
How to fix CVE-2017-18187
To remediate CVE-2017-18187, upgrade the affected package to a fixed version below.
- Alpine/mbedtls—upgrade to 2.7.0-r0 or later
- Debian/mbedtls—upgrade to 2.7.0-2 or later
- —upgrade to 2.4.2-1+deb9u2 or later
- —upgrade to 1.3.9-2.1+deb8u3 or later
Is CVE-2017-18187 being exploited?
Low — EPSS is 2.8%, meaning exploitation activity has not been observed at scale.
Affected packages (4)
- from 0, < 2.7.0-r0
- from 0, < 2.7.0-2
- from 0, < 2.4.2-1+deb9u2
- from 0, < 1.3.9-2.1+deb8u3
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |