CVE-2018-0497
First published: Sat Jul 28 2018(Updated: )
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.
Credit: security@debian.org security@debian.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| ARM mbed TLS | <2.1.14 | |
| ARM mbed TLS | >=2.2.0<2.7.5 | |
| ARM mbed TLS | >=2.8.0<2.12.0 | |
| Debian Debian Linux | =8.0 | |
| Debian Debian Linux | =9.0 | |
| ubuntu/mbedtls | <2.12.0-1 | 2.12.0-1 |
| ubuntu/mbedtls | <2.2.1-2ubuntu0.3 | 2.2.1-2ubuntu0.3 |
| ubuntu/polarssl | <1.3.9-2.1+ | 1.3.9-2.1+ |
| debian/mbedtls | 2.16.9-0.1 2.28.3-1 2.28.8-1 |
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Reference Links
- https://lists.debian.org/debian-lts-announce/2018/09/msg00029.html
- https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2018-02
- https://usn.ubuntu.com/4267-1/
- https://www.debian.org/security/2018/dsa-4296
- https://launchpad.net/bugs/cve/CVE-2018-0497
- https://security-tracker.debian.org/tracker/CVE-2018-0497
- https://ubuntu.com/security/notices/USN-4267-1
- https://www.cve.org/CVERecord?id=CVE-2018-0497
- https://nvd.nist.gov/vuln/detail/CVE-2018-0497
- https://ubuntu.com/security/CVE-2018-0497
Frequently Asked Questions
What is CVE-2018-0497?
CVE-2018-0497 is a vulnerability in ARM mbed TLS that allows remote attackers to achieve partial plaintext recovery via a timing-based side-channel attack.
How does CVE-2018-0497 work?
CVE-2018-0497 works by exploiting a timing-based side-channel attack in the CBC based ciphersuite of ARM mbed TLS.
What is the severity of CVE-2018-0497?
CVE-2018-0497 has a severity rating of 5.9, which is classified as medium.
Which version of ARM mbed TLS is affected by CVE-2018-0497?
ARM mbed TLS versions before 2.12.0, 2.7.5, and 2.1.14 are affected by CVE-2018-0497.
How can I fix CVE-2018-0497?
To fix CVE-2018-0497, update ARM mbed TLS to version 2.12.0 or later.
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