vulnwire
5.9med

CVE-2018-0734

Timing attack against DSA

Published 8 y ago · modified 29 d ago · JSON

CVSS
5.9
v3.1 · NVD
CISA KEV
No
not known exploited
EPSS
12.2%
percentile 96%
Public exploits
0
none known

The OpenSSL DSA 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 1.1.1a (Affected 1.1.1). Fixed in OpenSSL 1.1.0j (Affected 1.1.0-1.1.0i). Fixed in OpenSSL 1.0.2q (Affected 1.0.2-1.0.2p).

CISA SSVC assessment

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
29 d ago

Exploit prediction (EPSS)

12.15% probability of exploitation in the next 30 days, higher than 96% 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)

References

  • oracle.com /technetwork/security-advisory/cpujan2019-5072801.html · x_refsource_CONFIRM, x_transferred
  • usn.ubuntu.com /3840-1/ · vendor-advisory, x_refsource_UBUNTU, x_transferred
  • debian.org /security/2018/dsa-4355 · vendor-advisory, x_refsource_DEBIAN, x_transferred
  • security.netapp.com /advisory/ntap-20181105-0002/ · x_refsource_CONFIRM, x_transferred
  • git.openssl.org /gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=8abfe72e8c1de1b95f50aa0d9134803b4d00070f · x_refsource_CONFIRM, x_transferred
  • tenable.com /security/tns-2018-17 · x_refsource_CONFIRM, x_transferred
  • nodejs.org /en/blog/vulnerability/november-2018-security-releases/ · x_refsource_CONFIRM, x_transferred
  • tenable.com /security/tns-2018-16 · x_refsource_CONFIRM, x_transferred
  • securityfocus.com /bid/105758 · vdb-entry, x_refsource_BID, x_transferred
  • git.openssl.org /gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=ef11e19d1365eea2b1851e6f540a0bf365d303e7 · x_refsource_CONFIRM, 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=43e6a58d4991a451daf4891ff05a48735df871ac · x_refsource_CONFIRM, x_transferred
  • openssl.org /news/secadv/20181030.txt · x_refsource_CONFIRM, x_transferred
  • security.netapp.com /advisory/ntap-20190118-0002/ · x_refsource_CONFIRM, x_transferred
  • oracle.com /technetwork/security-advisory/cpuapr2019-5072813.html · x_refsource_MISC, x_transferred
  • security.netapp.com /advisory/ntap-20190423-0002/ · x_refsource_CONFIRM, x_transferred
  • lists.opensuse.org /opensuse-security-announce/2019-06/msg00030.html · vendor-advisory, x_refsource_SUSE, x_transferred
  • oracle.com /technetwork/security-advisory/cpujul2019-5072835.html · x_refsource_MISC, x_transferred
  • lists.opensuse.org /opensuse-security-announce/2019-07/msg00056.html · vendor-advisory, x_refsource_SUSE, x_transferred
  • access.redhat.com /errata/RHSA-2019:2304 · vendor-advisory, x_refsource_REDHAT, x_transferred
  • lists.fedoraproject.org /archives/list/package-announce%40lists.fedoraproject.org/message/EWC42UXL5GHTU5G77VKBF6JY · vendor-advisory, x_refsource_FEDORA, x_transferred
  • lists.fedoraproject.org /archives/list/package-announce%40lists.fedoraproject.org/message/ZBEV5QGDRFUZDMNECFXUSN5F · vendor-advisory, x_refsource_FEDORA, x_transferred
  • lists.fedoraproject.org /archives/list/package-announce%40lists.fedoraproject.org/message/Y3IVFGSERAZLNJCK35TEM2R4 · vendor-advisory, x_refsource_FEDORA, x_transferred
  • access.redhat.com /errata/RHSA-2019:3700 · vendor-advisory, x_refsource_REDHAT, x_transferred
  • access.redhat.com /errata/RHSA-2019:3933 · vendor-advisory, x_refsource_REDHAT, x_transferred
  • access.redhat.com /errata/RHSA-2019:3935 · vendor-advisory, x_refsource_REDHAT, x_transferred
  • access.redhat.com /errata/RHSA-2019:3932 · vendor-advisory, x_refsource_REDHAT, x_transferred
  • oracle.com /security-alerts/cpujan2020.html · x_refsource_MISC, x_transferred
  • oracle.com /security-alerts/cpuapr2020.html · x_refsource_MISC, x_transferred

Sources

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