CVE-2018-0497

Description

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.

5.9

CVSS

Severity: Medium

CVSS 3.0 •

CVSS 2.0 •

EPSS 0.64%

Vendor Advisory debian.org Vendor Advisory ubuntu.com

Affected: n/a ARM mbed TLS before 2.12.0, before 2.7.5, and before 2.1.14

References

Link	Tags
https://lists.debian.org/debian-lts-announce/2018/09/msg00029.html	third party advisory mailing list
https://www.debian.org/security/2018/dsa-4296	third party advisory vendor advisory
https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2018-02	third party advisory mitigation
https://usn.ubuntu.com/4267-1/	vendor advisory

Frequently Asked Questions

What is the severity of CVE-2018-0497?: CVE-2018-0497 has been scored as a medium severity vulnerability.
How to fix CVE-2018-0497?: To fix CVE-2018-0497, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-0497 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2018-0497 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2018-0497?: CVE-2018-0497 affects n/a ARM mbed TLS before 2.12.0, before 2.7.5, and before 2.1.14.

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