Description
The process_open function in sftp-server.c in OpenSSH before 7.6 does not properly prevent write operations in readonly mode, which allows attackers to create zero-length files.
Metrics
CVSS 3.1 5.3/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:NWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a | n/a |
References
- http://www.securityfocus.com/bid/101552Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2018:0980Third Party Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
- https://github.com/openbsd/src/commit/a6981567e8e215acc1ef690c8dbb30f2d9b00a19Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/09/msg00010.htmlMailing List, Third Party Advisory
- https://security.gentoo.org/glsa/201801-05Third Party Advisory
- https://security.netapp.com/advisory/ntap-20180423-0004/Third Party Advisory
- https://www.openssh.com/txt/release-7.6Release Notes, Vendor Advisory
- https://www.oracle.com/security-alerts/cpujan2020.htmlThird Party Advisory
- http://www.securityfocus.com/bid/101552Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2018:0980Third Party Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
- https://github.com/openbsd/src/commit/a6981567e8e215acc1ef690c8dbb30f2d9b00a19Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/09/msg00010.htmlMailing List, Third Party Advisory
- https://security.gentoo.org/glsa/201801-05Third Party Advisory
- https://security.netapp.com/advisory/ntap-20180423-0004/Third Party Advisory
- https://www.openssh.com/txt/release-7.6Release Notes, Vendor Advisory
- https://www.oracle.com/security-alerts/cpujan2020.htmlThird Party Advisory
Timeline
- Published
- Oct 26, 2017
- Last modified
- Jun 17, 2026
- NVD status
- Modified