Incorrect Permission Assignment for Critical Resource Affecting openssh package, versions <1:7.6p1-4
Threat Intelligence
EPSS
0.66% (80th
percentile)
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Test your applications- Snyk ID SNYK-UBUNTU2004-OPENSSH-579028
- published 26 Oct 2017
- disclosed 26 Oct 2017
Introduced: 26 Oct 2017
CVE-2017-15906 Open this link in a new tabHow to fix?
Upgrade Ubuntu:20.04 openssh to version 1:7.6p1-4 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream openssh package and not the openssh package as distributed by Ubuntu.
See How to fix? for Ubuntu:20.04 relevant fixed versions and status.
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.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2017-15906
- https://www.openssh.com/txt/release-7.6
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-15906
- https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html
- https://security-tracker.debian.org/tracker/CVE-2017-15906
- https://security.gentoo.org/glsa/201801-05
- https://github.com/openbsd/src/commit/a6981567e8e215acc1ef690c8dbb30f2d9b00a19
- https://www.oracle.com/security-alerts/cpujan2020.html
- https://security.netapp.com/advisory/ntap-20180423-0004/
- https://access.redhat.com/errata/RHSA-2018:0980
- http://www.securityfocus.com/bid/101552
- https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
CVSS Scores
version 3.1