5.3med
CVE-2018-20685
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…
Published 7 y ago · modified 4 mo ago · JSON
CVSS
5.3
v3.1 · CNA
CISA KEV
No
not known exploited
EPSS
3.7%
percentile 90%
Public exploits
0
none known
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.
CISA SSVC assessment
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 10 mo ago
Exploit prediction (EPSS)
3.68% probability of exploitation in the next 30 days, higher than 90% of all scored CVEs.
CVSS scores
| Assigned by | Version | Score | Vector |
|---|---|---|---|
| CISA ADP | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N |
| NVD | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N |
| CNA | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N |
| NVD | 2.0 | 2.6 | AV:N/AC:H/Au:N/C:N/I:P/A:N |
Classification
- Weakness
- CWE-863 Incorrect Authorization
References
- debian.org /security/2019/dsa-4387 · vendor-advisory, x_transferred
- usn.ubuntu.com /3885-1/ · vendor-advisory, x_transferred
- github.com /openssh/openssh-portable/commit/6010c0303a422a9c5fa8860c061bf7105eb7f8b2 · x_transferred
- cvsweb.openbsd.org /cgi-bin/cvsweb/src/usr.bin/ssh/scp.c.diff?r1=1.197&r2=1.198&f=h · x_transferred
- security.netapp.com /advisory/ntap-20190215-0001/ · x_transferred
- securityfocus.com /bid/106531 · vdb-entry, x_transferred
- sintonen.fi /advisories/scp-client-multiple-vulnerabilities.txt · x_transferred
- security.gentoo.org /glsa/201903-16 · vendor-advisory, x_transferred
- lists.debian.org /debian-lts-announce/2019/03/msg00030.html · mailing-list, x_transferred
- oracle.com /technetwork/security-advisory/cpuapr2019-5072813.html · x_transferred
- oracle.com /technetwork/security-advisory/cpuoct2019-5072832.html · x_transferred
- access.redhat.com /errata/RHSA-2019:3702 · vendor-advisory, x_transferred
- security.gentoo.org /glsa/202007-53 · vendor-advisory, x_transferred
- cert-portal.siemens.com /productcert/pdf/ssa-412672.pdf · x_transferred
Sources
- CVE List: CVE-2018-20685
- NVD: CVE-2018-20685
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