Arbitrary Command Injection Affecting openssh-askpass package, versions *


Severity

Recommended
medium

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.59% (80th percentile)

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  • Snyk IDSNYK-RHEL7-OPENSSHASKPASS-1394404
  • published26 Jul 2021
  • disclosed18 Jul 2020

Introduced: 18 Jul 2020

CVE-2020-15778  (opens in a new tab)
CWE-77  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:7 openssh-askpass.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openssh-askpass package and not the openssh-askpass package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

scp in OpenSSH through 8.3p1 allows command injection in the scp.c toremote function, as demonstrated by backtick characters in the destination argument. NOTE: the vendor reportedly has stated that they intentionally omit validation of "anomalous argument transfers" because that could "stand a great chance of breaking existing workflows."

CVSS Scores

version 3.1