Buffer overflow in Arm Mbed TLS
CVE-2018-0487
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.033 (88.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 88.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.033 · newest: 0.033 · change: 0.000
Affected products
- Arm Mbed TLS
- Debian Linux — versions 8.0, 9.0
- Arm Mbed TLS Before 1.3.22, 2.1.10, And 2.7.0 — versions ARM mbed TLS before 1.3.22, before 2.1.10, and before 2.7.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.debian.org/security/2018/dsa-4147 (vendor-advisory, Third Party Advisory)
- www.debian.org/security/2018/dsa-4138 (vendor-advisory, Third Party Advisory)
- tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2018-01 (Mitigation, Vendor Advisory)
- www.securityfocus.com/bid/103056 (VDB Entry, Third Party Advisory, vdb-entry)
- security.gentoo.org/glsa/201804-19 (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/4267-1/ (vendor-advisory)
Frequently asked questions
- What is CVE-2018-0487?
- CVE-2018-0487 is a critical-severity vulnerability in Arm Mbed TLS, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2018-02-13.
- How severe is CVE-2018-0487?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2018-0487 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.