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Oracle Linux: CVE-2023-2283: ELSA-2023-3839: libssh security update (MODERATE) (Multiple Advisories)

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Oracle Linux: CVE-2023-2283: ELSA-2023-3839:libssh security update (MODERATE) (Multiple Advisories)

Severity
4
CVSS
(AV:N/AC:H/Au:N/C:P/I:P/A:N)
Published
05/05/2023
Created
07/04/2023
Added
06/30/2023
Modified
11/30/2024

Description

A vulnerability was found in libssh, where the authentication check of the connecting client can be bypassed in the`pki_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.

Solution(s)

  • oracle-linux-upgrade-libssh
  • oracle-linux-upgrade-libssh-config
  • oracle-linux-upgrade-libssh-devel

References

  • https://attackerkb.com/topics/cve-2023-2283
  • CVE - 2023-2283
  • ELSA-2023-3839
  • ELSA-2023-6643
  • 查看数 697
  • 已创建
  • 最后回复

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