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redhatRedHatRHSA-2023:6643
HistoryNov 07, 2023 - 6:10 a.m.

(RHSA-2023:6643) Moderate: libssh security update

2023-11-0706:10:49
access.redhat.com
23
libssh
ssh protocol
cve-2023-1667
cve-2023-2283
rekeying
authorization bypass
security update
red hat enterprise linux 9.3

CVSS3

6.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

AI Score

6.7

Confidence

Low

EPSS

0.002

Percentile

52.0%

libssh is a library which implements the SSH protocol. It can be used to implement client and server applications.

Security Fix(es):

  • libssh: NULL pointer dereference during rekeying with algorithm guessing (CVE-2023-1667)

  • libssh: authorization bypass in pki_verify_data_signature (CVE-2023-2283)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Red Hat Enterprise Linux 9.3 Release Notes linked from the References section.

CVSS3

6.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

AI Score

6.7

Confidence

Low

EPSS

0.002

Percentile

52.0%