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ubuntucveUbuntu.comUB:CVE-2023-25567
HistoryFeb 14, 2023 - 12:00 a.m.

CVE-2023-25567

2023-02-1400:00:00
ubuntu.com
ubuntu.com
10
cve-2023-25567
gssapi library
ntlm authentication
out-of-bounds read
gss-ntlmssp
denial-of-service
memory unmapped
fix version 1.2.0
mechglue plugin
unix

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

EPSS

0.001

Percentile

45.8%

GSS-NTLMSSP, a mechglue plugin for the GSSAPI library that implements NTLM
authentication, has an out-of-bounds read when decoding target information
prior to version 1.2.0. The length of the av_pair is not checked properly
for two of the elements which can trigger an out-of-bound read. The
out-of-bounds read can be triggered via the main gss_accept_sec_context
entry point and could cause a denial-of-service if the memory is unmapped.
The issue is fixed in version 1.2.0.

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

EPSS

0.001

Percentile

45.8%