Incorrect Authorization Affecting openssh package, versions <7.9_p1-r3
Threat Intelligence
EPSS
0.49% (77th
percentile)
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Test your applications- Snyk ID SNYK-ALPINE312-OPENSSH-588170
- published 10 Jan 2019
- disclosed 10 Jan 2019
Introduced: 10 Jan 2019
CVE-2018-20685 Open this link in a new tabHow to fix?
Upgrade Alpine:3.12 openssh to version 7.9_p1-r3 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 Alpine.
See How to fix? for Alpine:3.12 relevant fixed versions and status.
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
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20685
- https://www.debian.org/security/2019/dsa-4387
- https://lists.debian.org/debian-lts-announce/2019/03/msg00030.html
- https://security-tracker.debian.org/tracker/CVE-2018-20685
- https://security.gentoo.org/glsa/202007-53
- https://security.gentoo.org/glsa/201903-16
- https://github.com/openssh/openssh-portable/commit/6010c0303a422a9c5fa8860c061bf7105eb7f8b2
- https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/scp.c.diff?r1=1.197&r2=1.198&f=h
- https://sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txt
- https://security.netapp.com/advisory/ntap-20190215-0001/
- https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
- https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
- https://access.redhat.com/errata/RHSA-2019:3702
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-20685
- http://www.securityfocus.com/bid/106531
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2018-20685
- https://usn.ubuntu.com/3885-1/
- https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
CVSS Scores
version 3.1