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alpinelinuxAlpine Linux Development TeamALPINE:CVE-2023-6918
HistoryDec 19, 2023 - 12:15 a.m.

CVE-2023-6918

2023-12-1900:15:08
Alpine Linux Development Team
security.alpinelinux.org
20
libssh
message digest
low-memory
decryption
integrity failure
null dereferences
crashes
uninitialized memory
crypto backends
cve-2023-6918
unix

5.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

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

6 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

35.2%

A flaw was found in the libssh implements abstract layer for message digest (MD) operations implemented by different supported crypto backends. The return values from these were not properly checked, which could cause low-memory situations failures, NULL dereferences, crashes, or usage of the uninitialized memory as an input for the KDF. In this case, non-matching keys will result in decryption/integrity failures, terminating the connection.

OSVersionArchitecturePackageVersionFilename
Alpineedge-communitynoarchlibssh< 0.10.6-r0UNKNOWN
Alpine3.19-communitynoarchlibssh< 0.10.6-r0UNKNOWN
Alpine3.20-communitynoarchlibssh< 0.10.6-r0UNKNOWN

5.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

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

6 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

35.2%