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01 Record

CVE-2018-0734

Timing attack against DSA

UnratedPUBLISHEDCNA: openssl
CNA base scoreUnratedNo CNA CVSS vector
View raw JSON

02 Description

Timing attack against DSA

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
12.15% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 95.7% of scored records. A rank, not a probability.
NVD base score
5.9 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD analysis status
Modified. NVD last modified this record on 2026-10-08.
Red Hat severity
Low. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2018-10-30 12:00Z8 YR AGO
Last updated
2026-10-08 21:13Z20 DAYS AGO
Reserved
2017-11-30
Assigning CNA
openssl
Record state
PUBLISHED
Severity
Not rated by the issuing CNA
CNA CVSS vector
Not published by the issuing CNA
Weaknesses
  • CWE-327Use of a Broken or Risky Cryptographic AlgorithmClass
  • CWE-385Covert Timing ChannelBase
Data version
5.2
Document digest
0f6c00c7353cdb57f37baefe93da402b3f6f2eee51573dc4ced0aaa2401c8fd2

05 Affected products

VendorProductVersionsPlatforms
OpenSSLOpenSSLFixed 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)—

06 References

07 Fixed in

Arch Linux

  • lib32-openssl
    Fixed in 1:1.1.1.a-1
  • openssl
    Fixed in 1.1.1.a-1

Source: Arch Linux Security Tracker, the Arch Linux security team. Reformatted by exploit.cc.

Debian 12

  • openssl
    Fixed in 1.1.1a-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • openssl
    Fixed in 1.1.1a-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • openssl
    Fixed in 1.1.1a-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 14.04 LTS

  • openssl
    Fixed in 1.0.1f-1ubuntu2.27

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 16.04 LTS

  • openssl
    Fixed in 1.0.2g-1ubuntu4.14

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 18.04 LTS

  • openssl
    Fixed in 1.1.0g-2ubuntu4.3
  • openssl1.0
    Fixed in 1.0.2n-1ubuntu5.2

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.