Description
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.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | openssh | 1:7.9p1-5 | — |
| Debian 13 | openssh | 1:7.9p1-5 | — |
| Debian 12 | openssh | 1:7.9p1-5 | — |
| Debian 9 | openssh | 1:7.4p1-10+deb9u5 | DSA-4387-1 |
| Debian 8 | openssh | 1:6.7p1-5+deb8u8 | DLA-1728-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | openssh-ssh1 | No fix yet | — |
| Ubuntu 22.04 LTS | openssh-ssh1 | No fix yet | — |
| Ubuntu 20.04 LTS | openssh-ssh1 | No fix yet | — |
| Ubuntu 18.04 LTS | openssh | 1:7.6p1-4ubuntu0.2 | USN-3885-1 |
| Ubuntu 18.04 LTS | openssh-ssh1 | No fix yet | — |
| Ubuntu 16.04 LTS | openssh | 1:7.2p2-4ubuntu2.7 | USN-3885-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | openssh | 1:6.6p1-2ubuntu2.12 | USN-3885-1 |
| Ubuntu Pro FIPS 16.04 LTS | openssh | 1:7.2p2-4ubuntu2.fips.2.10.1 | — |
| Ubuntu Pro FIPS-updates 16.04 LTS | openssh | 1:7.2p2-4ubuntu2.fips.2.8.1 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | openssh +6 | 8.0p1-3.el8 | RHSA-2019:3702 |
| RHEL 8 | pam_ssh_agent_auth | 0.10.3-7.3.el8 | RHSA-2019:3702 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | openssh | 8.0p1-30.el8_10 | RLSA-2019:3702 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 | openssh +1 | 7.6p1-9.13.1 | SUSE-SU-2019:0126-1 |
| SLES 12 SP4 | openssh +1 | 7.2p2-74.35.1 | SUSE-SU-2019:0132-1 |
| SLES 12 SP3 | openssh +1 | 7.2p2-74.35.1 | SUSE-SU-2019:0132-1 |
| SLES 12 SP2 | openssh +1 | 7.2p2-74.35.1 | SUSE-SU-2019:0132-1 |
| SLES 12 SP1 | openssh +1 | 6.6p1-54.26.1 | SUSE-SU-2019:0125-1 |
Show 9 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 | openssh +1 | 6.6p1-54.26.1 | SUSE-SU-2019:0125-1 |
| SLES 11 SP4 | openssh +1 | 6.6p1-36.12.1 | SUSE-SU-2019:13931-1 |
| SLES for SAP 12 SP4 | openssh +1 | 7.2p2-74.35.1 | SUSE-SU-2019:0132-1 |
| SLES for SAP 12 SP3 | openssh +1 | 7.2p2-74.35.1 | SUSE-SU-2019:0132-1 |
| SLES for SAP 12 SP2 | openssh +1 | 7.2p2-74.35.1 | SUSE-SU-2019:0132-1 |
| SLES for SAP 12 SP1 | openssh +1 | 6.6p1-54.26.1 | SUSE-SU-2019:0125-2 |
| SLES for SAP 11 SP4 | openssh +1 | 6.6p1-36.12.1 | SUSE-SU-2019:13931-1 |
| SUSE OpenStack Cloud 7 | openssh +1 | 7.2p2-74.35.1 | SUSE-SU-2019:0132-1 |
| SUSE Enterprise Storage 4 | openssh +1 | 7.2p2-74.35.1 | SUSE-SU-2019:0132-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | openssh | 8.4p1-7.4 | openSUSE-SU-2024:11124-1 |
| openSUSE Leap 15.0 | openssh | 7.6p1-lp150.8.9.1 | openSUSE-SU-2019:0091-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | dropbear | 2020.79-r0 | — |
| Alpine v3.24 | openssh | 7.9_p1-r3 | — |
| Alpine v3.23 | dropbear | 2020.79-r0 | — |
| Alpine v3.23 | openssh | 7.9_p1-r3 | — |
| Alpine v3.22 | dropbear | 2020.79-r0 | — |
| Alpine v3.22 | openssh | 7.9_p1-r3 | — |
| Alpine v3.21 | dropbear | 2020.79-r0 | — |
| Alpine v3.21 | openssh | 7.9_p1-r3 | — |
| Alpine v3.20 | dropbear | 2020.79-r0 | — |
| Alpine v3.20 | openssh | 7.9_p1-r3 | — |
Show 14 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | dropbear | 2020.79-r0 | — |
| Alpine v3.19 | openssh | 7.9_p1-r3 | — |
| Alpine v3.18 | dropbear | 2020.79-r0 | — |
| Alpine v3.18 | openssh | 7.9_p1-r3 | — |
| Alpine v3.17 | dropbear | 2020.79-r0 | — |
| Alpine v3.17 | openssh | 7.9_p1-r3 | — |
| Alpine v3.16 | dropbear | 2020.79-r0 | — |
| Alpine v3.16 | openssh | 7.9_p1-r3 | — |
| Alpine v3.15 | dropbear | 2020.79-r0 | — |
| Alpine v3.15 | openssh | 7.9_p1-r3 | — |
| Alpine v3.14 | dropbear | 2020.79-r0 | — |
| Alpine v3.14 | openssh | 7.9_p1-r3 | — |
| Alpine v3.13 | dropbear | 2020.79-r0 | — |
| Alpine v3.13 | openssh | 7.9_p1-r3 | — |
| Alpine v3.12 | dropbear | 2019.78-r1 | — |
| Alpine v3.12 | openssh | 7.9_p1-r3 | — |
| Alpine v3.11 | dropbear | 2019.78-r1 | — |
| Alpine v3.11 | openssh | 7.9_p1-r3 | — |
| Alpine v3.10 | dropbear | 2019.78-r1 | — |
| Alpine v3.10 | openssh | 7.9_p1-r3 | — |
| Alpine v3.9 | dropbear | 2018.76-r3 | — |
| Alpine v3.9 | openssh | 7.9_p1-r3 | — |
| Alpine v3.8 | openssh | 7.7_p1-r4 | — |
| Alpine v3.7 | openssh | 7.5_p1-r10 | — |
| Alpine v3.6 | openssh | 7.5_p1-r4 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | openssh +7 | 7.4p1-16.amzn2.0.6 | ALAS2-2019-1216 |
| Amazon Linux 2 | pam_ssh_agent_auth | 0.10.3-2.16.amzn2.0.6 | ALAS2-2019-1216 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | openssh +6 | 8.0p1-3.el8 | ELSA-2019-3702 |
| Oracle Linux 8 | pam_ssh_agent_auth | 0.10.3-7.3.el8 | ELSA-2019-3702 |
Advisories 18
- RLSA-2019:3702 Moderate: openssh security, bug fix, and enhancement update Rocky Linux Security Advisories · Jul 30, 2026
- WID-SEC-2024-0872 OpenSSH: Schwachstelle ermöglicht Umgehen von Sicherheitsvorkehrungen BSI CERT-Bund (WID) · Jul 29, 2026
- RHSA-2019:3702 Red Hat Security Advisory: openssh security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- USN-3885-1 openssh vulnerabilities Ubuntu Security Notices (USN) · May 29, 2026
- DSA-4387-1 openssh - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1728-1 openssh - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2019:0125-1 Security update for openssh SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:11124-1 openssh-8.4p1-7.4 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:0125-2 Security update for openssh SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2019:0091-1 Security update for openssh SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:0132-1 Security update for openssh SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:13931-1 Security update for openssh SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:0126-1 Security update for openssh SUSE / openSUSE Security Updates · May 2, 2025
- WID-SEC-2024-1082 Juniper JUNOS: Mehrere Schwachstellen BSI CERT-Bund (WID) · May 9, 2024
- SSA-412672 SSA-412672: Multiple OpenSSL and OpenSSH Vulnerabilities in SCALANCE X-200RNA Switch Devices before V3.2.7 Siemens ProductCERT · Dec 13, 2022
- ICSA-22-349-21 Siemens SCALANCE X-200RNA Switch Devices CISA ICS & IT advisories · Dec 13, 2022
- ELSA-2019-3702 Moderate: openssh security, bug fix, and enhancement update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Nov 14, 2019
- ALAS2-2019-1216 Moderate: openssh security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · May 30, 2019
References
- DSA-4387 vendor-advisory
- USN-3885-1 vendor-advisory
- 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://security.netapp.com/advisory/ntap-20190215-0001/
- 106531 vdb-entry
- https://sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txt
- GLSA-201903-16 vendor-advisory
- [debian-lts-announce] 20190325 [SECURITY] [DLA 1728-1] openssh security update mailing-list
- https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
- https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
- RHSA-2019:3702 vendor-advisory
- GLSA-202007-53 vendor-advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf