nse_libssh2.cc in Nmap 7.70 is subject to a denial of service condition due to a double free when an SSH connection fails, as demonstrated…

Description

nse_libssh2.cc in Nmap 7.70 is subject to a denial of service condition due to a double free when an SSH connection fails, as demonstrated by a leading \n character to ssh-brute.nse or ssh-auth-methods.nse.

Scores

EPSS (exploitation in 30 days)

3.2% · top 12% of all CVEs (5 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.

Weakness

• n/a
• CWE-415 (opens in a new tab)All about CWE-415 and its CVEs

Affected products

• n/a

  • affected n/a

References (8)

• https://seclists.org/nmap-dev/2018/q2/45 (opens in a new tab)x_refsource_MISCx_transferred
• https://github.com/nmap/nmap/issues/1227 (opens in a new tab)x_refsource_MISCx_transferred
• https://github.com/nmap/nmap/commit/350bbe0597d37ad67abe5fef8fba984707b4e9ad (opens in a new tab)x_refsource_MISCx_transferred
• https://github.com/nmap/nmap/issues/1077 (opens in a new tab)x_refsource_MISCx_transferred
• https://github.com/AMatchandaHaystack/Research/blob/master/Nmap%26libsshDF (opens in a new tab)x_refsource_MISCx_transferred
• https://seclists.org/nmap-announce/2019/0 (opens in a new tab)x_refsource_MISCx_transferred
• openSUSE-SU-2019:2198 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
• openSUSE-SU-2019:2200 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2017-18594](https://trackcve.app/badge/CVE-2017-18594.svg)](https://trackcve.app/cve/CVE-2017-18594)

Record last updated 5 Aug 2024, 21:28 UTC.