Incorrect Authorization Affecting openssh package, versions <1:6.7p1-5+deb8u8
Snyk CVSS
Attack Complexity
High
User Interaction
Required
Integrity
High
Threat Intelligence
EPSS
0.69% (80th
percentile)
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Test your applications- Snyk ID SNYK-DEBIAN8-OPENSSH-368597
- 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 Debian:8
openssh
to version 1:6.7p1-5+deb8u8 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 Debian
.
See How to fix?
for Debian:8
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://security-tracker.debian.org/tracker/CVE-2018-20685
- 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.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