Improper Authentication Affecting libssh-config package, versions <0.9.8-150400.3.3.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.19% (58th percentile)

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  • Snyk IDSNYK-SLES155-LIBSSHCONFIG-6180040
  • published19 Jan 2024
  • disclosed18 Jan 2024

Introduced: 18 Jan 2024

CVE-2023-2283  (opens in a new tab)
CWE-287  (opens in a new tab)

How to fix?

Upgrade SLES:15.5 libssh-config to version 0.9.8-150400.3.3.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libssh-config package and not the libssh-config package as distributed by SLES. See How to fix? for SLES:15.5 relevant fixed versions and status.

A vulnerability was found in libssh, where the authentication check of the connecting client can be bypassed in thepki_verify_data_signature function in memory allocation problems. This issue may happen if there is insufficient memory or the memory usage is limited. The problem is caused by the return value rc, which is initialized to SSH_ERROR and later rewritten to save the return value of the function call pki_key_check_hash_compatible. The value of the variable is not changed between this point and the cryptographic verification. Therefore any error between them calls goto error returning SSH_OK.

CVSS Scores

version 3.1