Vulnerability in Arm Mbed TLS
CVE-2018-0497
ARM mbed TLS before 2.12.0, before 2.7.5, and before 2.1.14 allows remote attackers to achieve partial plaintext recovery (for a CBC based ciphersuite) via a timing-based side-channel attack. This vulnerability exists because of an incorrect fix (with a wrong SHA-384 calculation) for CVE-2013-0169.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.028 (85.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 85.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.027 · newest: 0.028 · change: +0.001
Affected products
- Arm Mbed TLS
- Debian Linux — versions 8.0, 9.0
- Arm Mbed TLS Before 2.12.0, 2.7.5, And 2.1.14 — versions ARM mbed TLS before 2.12.0, before 2.7.5, and before 2.1.14
Public proof-of-concept exploits
References
- lists.debian.org/debian-lts-announce/2018/09/msg00029.html (mailing-list, Mailing List, Third Party Advisory)
- www.debian.org/security/2018/dsa-4296 (vendor-advisory, Third Party Advisory)
- tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2018-02 (Third Party Advisory, Mitigation)
- usn.ubuntu.com/4267-1/ (vendor-advisory)
Frequently asked questions
- What is CVE-2018-0497?
- CVE-2018-0497 is a medium-severity vulnerability in Arm Mbed TLS. CVSS score: 5.9/10. Published 2018-07-28.
- How severe is CVE-2018-0497?
- Medium severity. CVSS v3 base score is 5.9 out of 10.
- Is CVE-2018-0497 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.