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.
EPSS: 0.027 (84.2th percentile) — read the EPSS interpretation.
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.
Affected products
- Arm Mbed_tls
- Debian Debian_linux — versions 8.0, 9.0
- N/a 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
- security@debian.org (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- security@debian.org (vendor-advisory, Third Party Advisory, x_refsource_DEBIAN)
- security@debian.org (x_refsource_CONFIRM, Third Party Advisory, Mitigation)
- security@debian.org (x_refsource_UBUNTU, 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.