vulnwire
5.9med

CVE-2018-0735

Timing attack against ECDSA signature generation

Published 8 y ago · modified 29 d ago · JSON

CVSS
5.9
v3.1 · NVD
CISA KEV
No
not known exploited
EPSS
4.7%
percentile 92%
Public exploits
0
none known

The OpenSSL ECDSA signature algorithm has been shown to be vulnerable to a timing side channel attack. An attacker could use variations in the signing algorithm to recover the private key. Fixed in OpenSSL 1.1.0j (Affected 1.1.0-1.1.0i). Fixed in OpenSSL 1.1.1a (Affected 1.1.1).

CISA SSVC assessment

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
29 d ago

Exploit prediction (EPSS)

4.72% probability of exploitation in the next 30 days, higher than 92% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
NVD3.15.9CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD2.04.3AV:N/AC:M/Au:N/C:P/I:N/A:N

Affected products

  • OpenSSL OpenSSL

Classification

Weakness
  • CWE-327 Use of a Broken or Risky Cryptographic Algorithm
Technology feeds
Node.js (RSS, critical only) · OpenSSL (RSS, critical only) · MySQL (RSS, critical only)

References

  • git.openssl.org /gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=56fb454d281a023b3f950d969693553d3f3ceea1 · x_refsource_CONFIRM, x_transferred
  • oracle.com /technetwork/security-advisory/cpujan2019-5072801.html · x_refsource_CONFIRM, x_transferred
  • securityfocus.com /bid/105750 · vdb-entry, x_refsource_BID, x_transferred
  • usn.ubuntu.com /3840-1/ · vendor-advisory, x_refsource_UBUNTU, x_transferred
  • security.netapp.com /advisory/ntap-20181105-0002/ · x_refsource_CONFIRM, x_transferred
  • nodejs.org /en/blog/vulnerability/november-2018-security-releases/ · x_refsource_CONFIRM, x_transferred
  • securitytracker.com /id/1041986 · vdb-entry, x_refsource_SECTRACK, x_transferred
  • lists.debian.org /debian-lts-announce/2018/11/msg00024.html · mailing-list, x_refsource_MLIST, x_transferred
  • debian.org /security/2018/dsa-4348 · vendor-advisory, x_refsource_DEBIAN, x_transferred
  • git.openssl.org /gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=b1d6d55ece1c26fa2829e2b819b038d7b6d692b4 · x_refsource_CONFIRM, x_transferred
  • openssl.org /news/secadv/20181029.txt · x_refsource_CONFIRM, x_transferred
  • oracle.com /technetwork/security-advisory/cpuapr2019-5072813.html · x_refsource_MISC, x_transferred
  • oracle.com /technetwork/security-advisory/cpujul2019-5072835.html · x_refsource_MISC, x_transferred
  • access.redhat.com /errata/RHSA-2019:3700 · vendor-advisory, x_refsource_REDHAT, x_transferred
  • oracle.com /security-alerts/cpujan2020.html · x_refsource_MISC, x_transferred

Sources

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