CVE-2017-18594
published 2019-08-29CVE-2017-18594: 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…
PriorityP337high7.5CVSS 3.0
AVNACLPRNUINSUCNINAH
EPSS
3.16%
86.4th percentile
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.
Affected
6 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | nmap | < nmap 7.80+dfsg1-1 (bookworm) | nmap 7.80+dfsg1-1 (bookworm) |
| nmap | nmap | — | — |
| nmap | nmap | >= 0 < 7.80+dfsg1-1 | 7.80+dfsg1-1 |
| nmap | nmap | >= 0 < 7.80+dfsg1-1 | 7.80+dfsg1-1 |
| nmap | nmap | >= 0 < 7.80+dfsg1-1 | 7.80+dfsg1-1 |
| nmap | nmap | >= 0 < 7.80+dfsg1-1 | 7.80+dfsg1-1 |
CVSS provenance
nvdv3.07.5HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvdv2.05.0MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:P
osv7.5HIGH
vendor_debian7.5LOW
vendor_redhat7.5HIGH
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GHSA
GHSA-mh4c-hqr8-mc3f: nse_libssh2
ghsa_unreviewed·2022-05-24
CVE-2017-18594 [HIGH] CWE-415 GHSA-mh4c-hqr8-mc3f: nse_libssh2
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.
OSV
CVE-2017-18594: nse_libssh2
osv·2019-08-29·CVSS 7.5
CVE-2017-18594 [HIGH] CVE-2017-18594: nse_libssh2
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.
Red Hat
nmap: denial of service condition due to a double free when SSH connection fails
vendor_redhat·2019-08-10·CVSS 7.5
CVE-2017-18594 [HIGH] CWE-400 nmap: denial of service condition due to a double free when SSH connection fails
nmap: denial of service condition due to a double free when SSH connection fails
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.
Statement: Red Hat Enterprise Linux 8 is shipped with a vulnerable version of nmap sources, however, the libssh2 module is explicitly excluded from compilation, and is thus not affected. A future update may fix the source.
Red Hat Enterprise Linux 7 and older are shipped with nmap-6.40 and older, which do not contain the libssh2 module.
Package: nmap (Red Hat Enterprise Linux 5) - Not affected
Package: nmap (Red Hat Enterprise Linux 6) - Not affected
Package: nmap (Red Hat Enterprise Linux 7) - Not aff
Debian
CVE-2017-18594: nmap - nse_libssh2.cc in Nmap 7.70 is subject to a denial of service condition due to a...
vendor_debian·2017·CVSS 7.5
CVE-2017-18594 [HIGH] CVE-2017-18594: nmap - nse_libssh2.cc in Nmap 7.70 is subject to a denial of service condition due to a...
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.
Scope: local
bookworm: resolved (fixed in 7.80+dfsg1-1)
bullseye: resolved (fixed in 7.80+dfsg1-1)
forky: resolved (fixed in 7.80+dfsg1-1)
sid: resolved (fixed in 7.80+dfsg1-1)
trixie: resolved (fixed in 7.80+dfsg1-1)
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2017-18594 nmap: denial of service condition due to a double free when SSH connection fails
bugzilla·2019-09-05·CVSS 7.5
CVE-2017-18594 [HIGH] CVE-2017-18594 nmap: denial of service condition due to a double free when SSH connection fails
CVE-2017-18594 nmap: denial of service condition due to a double free when SSH connection fails
A vulnerability was found in 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.
Reference:
https://github.com/nmap/nmap/issues/1227
https://github.com/nmap/nmap/issues/1077
https://seclists.org/nmap-dev/2018/q2/45
https://github.com/AMatchandaHaystack/Research/blob/master/Nmap%26libsshDF
https://github.com/nmap/nmap/commit/350bbe0597d37ad67abe5fef8fba984707b4e9ad
https://seclists.org/nmap-announce/2019/0
Discussion:
Created nmap tracking bugs for this issue:
Affects: fedora-all [bug 1749182]
---
Statement:
Red Hat Enterprise Linux 8 i
Bugzilla
CVE-2017-18594 nmap: denial of service condition due to a double free when SSH connection fails [fedora-all]
bugzilla·2019-09-05·CVSS 7.5
CVE-2017-18594 [HIGH] CVE-2017-18594 nmap: denial of service condition due to a double free when SSH connection fails [fedora-all]
CVE-2017-18594 nmap: denial of service condition due to a double free when SSH connection fails [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of fedora-all.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affe
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00073.htmlhttp://lists.opensuse.org/opensuse-security-announce/2019-09/msg00075.htmlhttps://github.com/AMatchandaHaystack/Research/blob/master/Nmap%26libsshDFhttps://github.com/nmap/nmap/commit/350bbe0597d37ad67abe5fef8fba984707b4e9adhttps://github.com/nmap/nmap/issues/1077https://github.com/nmap/nmap/issues/1227https://seclists.org/nmap-announce/2019/0https://seclists.org/nmap-dev/2018/q2/45http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00073.htmlhttp://lists.opensuse.org/opensuse-security-announce/2019-09/msg00075.htmlhttps://github.com/AMatchandaHaystack/Research/blob/master/Nmap%26libsshDFhttps://github.com/nmap/nmap/commit/350bbe0597d37ad67abe5fef8fba984707b4e9adhttps://github.com/nmap/nmap/issues/1077https://github.com/nmap/nmap/issues/1227https://seclists.org/nmap-announce/2019/0https://seclists.org/nmap-dev/2018/q2/45
2019-08-29
Published