Timing-based Side-Channel Vulnerability in ARM mbed TLS
CVE-2018-0497

5.9MEDIUM

Key Information:

Vendor

Arm
Status
Arm Mbed Tls Before 2.12.0, Before 2.7.5, And Before 2.1.14
Vendor
CVE Published:
28 July 2018

What is CVE-2018-0497?

ARM mbed TLS versions prior to 2.12.0, 2.7.5, and 2.1.14 are susceptible to a timing-based side-channel attack which can allow remote attackers to partially recover plaintext data when using CBC-based ciphersuites. This vulnerability arises from a flawed fix related to an incorrect SHA-384 calculation, directly impacting the security of applications relying on these versions of mbed TLS.

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Affected Version(s)

ARM mbed TLS before 2.12.0, before 2.7.5, and before 2.1.14 ARM mbed TLS before 2.12.0, before 2.7.5, and before 2.1.14

References

https://lists.debian.org/debian-lts-announce/2018/09/msg0...
mailing-listx_refsource_MLIST
https://www.debian.org/security/2018/dsa-4296
vendor-advisoryx_refsource_DEBIAN
https://tls.mbed.org/tech-updates/security-advisories/mbe...
x_refsource_CONFIRM

CVSS V3.1

Score:
5.9
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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