FKIE_CVE-2018-20685

Vulnerability from fkie_nvd - Published: 2019-01-10 21:29 - Updated: 2026-06-17 01:53
Summary
In OpenSSH 7.9, scp.c in the scp client allows remote SSH servers to bypass intended access restrictions via the filename of . or an empty filename. The impact is modifying the permissions of the target directory on the client side.
References
cve@mitre.orghttp://www.securityfocus.com/bid/106531Broken Link
cve@mitre.orghttps://access.redhat.com/errata/RHSA-2019:3702Third Party Advisory
cve@mitre.orghttps://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdfPatch, Third Party Advisory
cve@mitre.orghttps://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/scp.c.diff?r1=1.197&r2=1.198&f=hPatch
cve@mitre.orghttps://github.com/openssh/openssh-portable/commit/6010c0303a422a9c5fa8860c061bf7105eb7f8b2Patch
cve@mitre.orghttps://lists.debian.org/debian-lts-announce/2019/03/msg00030.htmlMailing List, Third Party Advisory
cve@mitre.orghttps://security.gentoo.org/glsa/201903-16Third Party Advisory
cve@mitre.orghttps://security.gentoo.org/glsa/202007-53Third Party Advisory
cve@mitre.orghttps://security.netapp.com/advisory/ntap-20190215-0001/Third Party Advisory
cve@mitre.orghttps://sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txtPatch, Third Party Advisory
cve@mitre.orghttps://usn.ubuntu.com/3885-1/Third Party Advisory
cve@mitre.orghttps://www.debian.org/security/2019/dsa-4387Third Party Advisory
cve@mitre.orghttps://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.htmlPatch, Third Party Advisory
cve@mitre.orghttps://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.htmlPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/106531Broken Link
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2019:3702Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdfPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/scp.c.diff?r1=1.197&r2=1.198&f=hPatch
af854a3a-2127-422b-91ae-364da2661108https://github.com/openssh/openssh-portable/commit/6010c0303a422a9c5fa8860c061bf7105eb7f8b2Patch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2019/03/msg00030.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/201903-16Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/202007-53Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20190215-0001/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txtPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/3885-1/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2019/dsa-4387Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.htmlPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.htmlPatch, Third Party Advisory
Impacted products

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      "value": "In OpenSSH 7.9, scp.c in the scp client allows remote SSH servers to bypass intended access restrictions via the filename of . or an empty filename. The impact is modifying the permissions of the target directory on the client side."
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          "role": "CISA Coordinator",
          "timestamp": "2025-12-17T21:53:24.729008Z",
          "version": "2.0.3"
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  "published": "2019-01-10T21:29:00.377",
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}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.


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