CVE-2018-0487

moderate-risk
Published 2018-02-13

ARM mbed TLS before 1.3.22, before 2.1.10, and before 2.7.0 allows remote attackers to execute arbitrary code or cause a denial of service (buffer overflow) via a crafted certificate chain that is mishandled during RSASSA-PSS signature verification within a TLS or DTLS session.

Do I need to act?

~
5.1% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (3)

Affected Vendors

Debian Arm

References (12)

Third Party Advisory http://www.securityfocus.com/bid/103056
Third Party Advisory https://security.gentoo.org/glsa/201804-19
Mitigation https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-...
https://usn.ubuntu.com/4267-1/
Third Party Advisory https://www.debian.org/security/2018/dsa-4138
Third Party Advisory https://www.debian.org/security/2018/dsa-4147
Third Party Advisory http://www.securityfocus.com/bid/103056
Third Party Advisory https://security.gentoo.org/glsa/201804-19
Mitigation https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-...
https://usn.ubuntu.com/4267-1/
Third Party Advisory https://www.debian.org/security/2018/dsa-4138
Third Party Advisory https://www.debian.org/security/2018/dsa-4147
49
/ 100
moderate-risk
Severity 32/34 · Critical
Exploitability 8/34 · Low
Exposure 9/34 · Low