CVE-2024-13176

Summary

Issue summary: A timing side-channel which could potentially allow recovering the private key exists in the ECDSA signature computation.

Impact summary: A timing side-channel in ECDSA signature computations could allow recovering the private key by an attacker. However, measuring the timing would require either local access to the signing application or a very fast network connection with low latency.

There is a timing signal of around 300 nanoseconds when the top word of the inverted ECDSA nonce value is zero. This can happen with significant probability only for some of the supported elliptic curves. In particular the NIST P-521 curve is affected. To be able to measure this leak, the attacker process must either be located in the same physical computer or must have a very fast network connection with low latency. For that reason the severity of this vulnerability is Low.

The FIPS modules in 3.4, 3.3, 3.2, 3.1 and 3.0 are affected by this issue.

Affected Software

VendorProductVersion RangeStatus
OpenSSLOpenSSL3.4.0 < 3.4.1affected
OpenSSLOpenSSL3.3.0 < 3.3.3affected
OpenSSLOpenSSL3.2.0 < 3.2.4affected
OpenSSLOpenSSL3.1.0 < 3.1.8affected
OpenSSLOpenSSL3.0.0 < 3.0.16affected
OpenSSLOpenSSL1.1.1 < 1.1.1zbaffected
OpenSSLOpenSSL1.0.2 < 1.0.2zlaffected

Weaknesses

  • CWE-385: CWE-385 Covert Timing Channel

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References