CVE-2024-13176 (GCVE-0-2024-13176)

Vulnerability from cvelistv5 – Published: 2025-01-20 13:29 – Updated: 2026-03-18 16:49
VLAI
Title
Timing side-channel in ECDSA signature computation
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.
Severity
4.1 (Medium)
CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
OpenSSL OpenSSL Affected: 3.4.0 , < 3.4.1 (semver)
Affected: 3.3.0 , < 3.3.3 (semver)
Affected: 3.2.0 , < 3.2.4 (semver)
Affected: 3.1.0 , < 3.1.8 (semver)
Affected: 3.0.0 , < 3.0.16 (semver)
Affected: 1.1.1 , < 1.1.1zb (custom)
Affected: 1.0.2 , < 1.0.2zl (custom)
Create a notification for this product.
Date Public
2025-01-20 14:00
Credits
George Pantelakis (Red Hat) Alicja Kario (Red Hat) Tomáš Mráz
Show details on NVD website
To clipboard 

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For that reason\\nthe severity of this vulnerability is Low.\\n\\nThe FIPS modules in 3.4, 3.3, 3.2, 3.1 and 3.0 are affected by this issue.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"Issue summary: A timing side-channel which could potentially allow recovering\u003cbr\u003ethe private key exists in the ECDSA signature computation.\u003cbr\u003e\u003cbr\u003eImpact summary: A timing side-channel in ECDSA signature computations\u003cbr\u003ecould allow recovering the private key by an attacker. However, measuring\u003cbr\u003ethe timing would require either local access to the signing application or\u003cbr\u003ea very fast network connection with low latency.\u003cbr\u003e\u003cbr\u003eThere is a timing signal of around 300 nanoseconds when the top word of\u003cbr\u003ethe inverted ECDSA nonce value is zero. This can happen with significant\u003cbr\u003eprobability only for some of the supported elliptic curves. In particular\u003cbr\u003ethe NIST P-521 curve is affected. To be able to measure this leak, the attacker\u003cbr\u003eprocess must either be located in the same physical computer or must\u003cbr\u003ehave a very fast network connection with low latency. For that reason\u003cbr\u003ethe severity of this vulnerability is Low.\u003cbr\u003e\u003cbr\u003eThe FIPS modules in 3.4, 3.3, 3.2, 3.1 and 3.0 are affected by this issue.\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-385\", \"description\": \"CWE-385 Covert Timing Channel\"}]}], \"providerMetadata\": {\"orgId\": \"3a12439a-ef3a-4c79-92e6-6081a721f1e5\", \"shortName\": \"openssl\", \"dateUpdated\": \"2026-03-18T16:49:36.429Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-13176\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-03-18T16:49:36.429Z\", \"dateReserved\": \"2025-01-07T09:34:54.572Z\", \"assignerOrgId\": \"3a12439a-ef3a-4c79-92e6-6081a721f1e5\", \"datePublished\": \"2025-01-20T13:29:57.047Z\", \"assignerShortName\": \"openssl\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.