CVE-2018-0495 (GCVE-0-2018-0495)

Vulnerability from cvelistv5 – Published: 2018-06-13 23:00 – Updated: 2024-08-05 03:28
VLAI?
Summary
Libgcrypt before 1.7.10 and 1.8.x before 1.8.3 allows a memory-cache side-channel attack on ECDSA signatures that can be mitigated through the use of blinding during the signing process in the _gcry_ecc_ecdsa_sign function in cipher/ecc-ecdsa.c, aka the Return Of the Hidden Number Problem or ROHNP. To discover an ECDSA key, the attacker needs access to either the local machine or a different virtual machine on the same physical host.
Severity ?
No CVSS data available.
CWE
  • side-channel attack
Assigner
References
https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcr… x_refsource_MISC
http://www.securitytracker.com/id/1041144 vdb-entryx_refsource_SECTRACK
https://usn.ubuntu.com/3850-1/ vendor-advisoryx_refsource_UBUNTU
http://www.securitytracker.com/id/1041147 vdb-entryx_refsource_SECTRACK
https://www.nccgroup.trust/us/our-research/techni… x_refsource_MISC
https://usn.ubuntu.com/3689-1/ vendor-advisoryx_refsource_UBUNTU
https://lists.gnupg.org/pipermail/gnupg-announce/… x_refsource_MISC
https://usn.ubuntu.com/3689-2/ vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/3692-2/ vendor-advisoryx_refsource_UBUNTU
https://lists.debian.org/debian-lts-announce/2018… mailing-listx_refsource_MLIST
https://www.debian.org/security/2018/dsa-4231 vendor-advisoryx_refsource_DEBIAN
https://access.redhat.com/errata/RHSA-2018:3505 vendor-advisoryx_refsource_REDHAT
https://usn.ubuntu.com/3850-2/ vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/3692-1/ vendor-advisoryx_refsource_UBUNTU
https://access.redhat.com/errata/RHSA-2018:3221 vendor-advisoryx_refsource_REDHAT
https://dev.gnupg.org/T4011 x_refsource_MISC
https://www.oracle.com/technetwork/security-advis… x_refsource_MISC
https://access.redhat.com/errata/RHSA-2019:1297 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2019:1296 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2019:1543 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2019:2237 vendor-advisoryx_refsource_REDHAT
Impacted products
Vendor Product Version
n/a Libgcrypt before 1.7.10 and 1.8.x before 1.8.3 Affected: Libgcrypt before 1.7.10 and 1.8.x before 1.8.3
Show details on NVD website
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      "descriptions": "[{\"lang\": \"en\", \"value\": \"Libgcrypt before 1.7.10 and 1.8.x before 1.8.3 allows a memory-cache side-channel attack on ECDSA signatures that can be mitigated through the use of blinding during the signing process in the _gcry_ecc_ecdsa_sign function in cipher/ecc-ecdsa.c, aka the Return Of the Hidden Number Problem or ROHNP. To discover an ECDSA key, the attacker needs access to either the local machine or a different virtual machine on the same physical host.\"}, {\"lang\": \"es\", \"value\": \"Libgcrypt en versiones anteriores a la 1.7.10 y versiones 1.8.x anteriores a la 1.8.3 permite un ataque de canal lateral por cach\\u00e9 de memoria en las firmas ECDSA que se puede mitigar mediante el uso de la ocultaci\\u00f3n durante el proceso de firmado en la funci\\u00f3n _gcry_ecc_ecdsa_sign en cipher/ecc-ecdsa.c. Esto tambi\\u00e9n se conoce como Return Of the Hidden Number Problem o ROHNP. Para descubrir una clave ECDSA, el atacante necesita acceso a la m\\u00e1quina local o a una m\\u00e1quina virtual diferente en el mismo host f\\u00edsico.\"}]",
      "id": "CVE-2018-0495",
      "lastModified": "2024-11-21T03:38:21.160",
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      "published": "2018-06-13T23:29:00.333",
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      "sourceIdentifier": "security@debian.org",
      "vulnStatus": "Modified",
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    },
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  }
}


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Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

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.