CVSS3
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
Percentile
45.8%
GSS-NTLMSSP is a mechglue plugin for the GSSAPI library that implements NTLM authentication. Prior to version 1.2.0, multiple out-of-bounds reads when decoding NTLM fields can trigger a denial of service. A 32-bit integer overflow condition can lead to incorrect checks of consistency of length of internal buffers. Although most applications will error out before accepting a singe input buffer of 4GB in length this could theoretically happen. This vulnerability can be triggered via the main gss_accept_sec_context
entry point if the application allows tokens greater than 4GB in length. This can lead to a large, up to 65KB, out-of-bounds read which could cause a denial-of-service if it reads from unmapped memory. Version 1.2.0 contains a patch for the out-of-bounds reads.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Debian | 12 | all | gss-ntlmssp | < 1.2.0-1 | gss-ntlmssp_1.2.0-1_all.deb |
Debian | 11 | all | gss-ntlmssp | <= 0.7.0-4 | gss-ntlmssp_0.7.0-4_all.deb |
Debian | 999 | all | gss-ntlmssp | < 1.2.0-1 | gss-ntlmssp_1.2.0-1_all.deb |
Debian | 13 | all | gss-ntlmssp | < 1.2.0-1 | gss-ntlmssp_1.2.0-1_all.deb |