NULL Pointer Dereference Affecting libssh-debuginfo package, versions <0:0.9.4-2.el8


Severity

Recommended
0.0
medium
0
10

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.28% (69th percentile)

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  • Snyk IDSNYK-ROCKY8-LIBSSHDEBUGINFO-3297203
  • published3 Feb 2023
  • disclosed13 Apr 2020

Introduced: 13 Apr 2020

CVE-2020-1730  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:8 libssh-debuginfo to version 0:0.9.4-2.el8 or higher.
This issue was patched in RLSA-2020:4545.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libssh-debuginfo package and not the libssh-debuginfo package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:8 relevant fixed versions and status.

A flaw was found in libssh versions before 0.8.9 and before 0.9.4 in the way it handled AES-CTR (or DES ciphers if enabled) ciphers. The server or client could crash when the connection hasn't been fully initialized and the system tries to cleanup the ciphers when closing the connection. The biggest threat from this vulnerability is system availability.

CVSS Scores

version 3.1