GHSA-65P9-R9H6-22VJ

GHSA-65P9-R9H6-22VJ is a high-severity security vulnerability in aws-lc-sys (rust), affecting versions >= 0.14.0, < 0.38.0. It is fixed in 0.38.0, 0.13.12.

Summary

AWS-LC is an open-source, general-purpose cryptographic library.

Impacted versions:

  • aws-lc-sys versions: >= 0.14.0, < 0.38.0
  • aws-lc-fips-sys versions: >= v0.13.0, < 0.13.12.

Workarounds

In the special cases of using AES-CCM with (M=4, L=2), (M=8, L=2), or (M=16, L=2), applications can workaround this issue by using AES-CCM through the EVP AEAD API using implementations EVP_aead_aes_128_ccm_bluetooth, EVP_aead_aes_128_ccm_bluetooth_8, and, EVP_aead_aes_128_ccm_matter respectively.

Otherwise, there is no workaround and applications using aws-lc-sys or aws-lc-fips-sys should upgrade to the most recent releases of aws-lc-sys or aws-lc-fips-sys.

Resources

If there are any questions or comments about this advisory, contact [AWS/Amazon] Security via thevulnerability reporting page or directly via email to [email protected]. Please do not create a public GitHub issue.

Acknowledgement

AWS-LC would like to thank Joshua Rogers (https://joshua.hu/) for collaborating on this issue through the coordinated vulnerability disclosure process.

Impact

Observable timing discrepancy in AES-CCM decryption in AWS-LC allows an unauthenticated user to potentially determine authentication tag validity via timing analysis.

The impacted implementations are through the EVP CIPHER API: EVP_aes_128_ccm, EVP_aes_192_ccm, and EVP_aes_256_ccm.

Customers of AWS services do not need to take action. aws-lc-sys and aws-lc-fips-sys contain code from AWS-LC. Applications using aws-lc-sys or aws-lc-fips-sys should upgrade to the most recent releases of aws-lc-sys or aws-lc-fips-sys.

GHSA-65P9-R9H6-22VJ has a CVSS score of 5.9 (High). The vector is network-reachable, no privileges required, and no user interaction. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (0.38.0, 0.13.12); upgrading removes the vulnerable code path.

Affected versions

aws-lc-sys (>= 0.14.0, < 0.38.0) aws-lc-fips-sys (>= 0.13.0, < 0.13.12)

Security releases

aws-lc-sys → 0.38.0 (rust) aws-lc-fips-sys → 0.13.12 (rust)

Kodem intelligence

Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.

Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.

See it in your environment

Remediation advice

The patch is included in aws-lc-sys v.0.38.0 and aws-lc-fips-sys v0.13.12.

Frequently Asked Questions

  1. What is GHSA-65P9-R9H6-22VJ? GHSA-65P9-R9H6-22VJ is a high-severity security vulnerability in aws-lc-sys (rust), affecting versions >= 0.14.0, < 0.38.0. It is fixed in 0.38.0, 0.13.12.
  2. How severe is GHSA-65P9-R9H6-22VJ? GHSA-65P9-R9H6-22VJ has a CVSS score of 5.9 (High). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
  3. Which packages are affected by GHSA-65P9-R9H6-22VJ?
    • aws-lc-sys (rust) (versions >= 0.14.0, < 0.38.0)
    • aws-lc-fips-sys (rust) (versions >= 0.13.0, < 0.13.12)
  4. Is there a fix for GHSA-65P9-R9H6-22VJ? Yes. GHSA-65P9-R9H6-22VJ is fixed in 0.38.0, 0.13.12. Upgrade to this version or later.
  5. Is GHSA-65P9-R9H6-22VJ exploitable, and should I be worried? Whether GHSA-65P9-R9H6-22VJ is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
  6. What actually determines whether GHSA-65P9-R9H6-22VJ is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
  7. How do I fix GHSA-65P9-R9H6-22VJ?
    • Upgrade aws-lc-sys to 0.38.0 or later
    • Upgrade aws-lc-fips-sys to 0.13.12 or later

Other vulnerabilities in aws-lc-sys

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