GNU SASL before 2.2.4 lacks sanitization of a short challenge in _gsasl_ntlm_client_step in the NTLM client, which could result in memory disclosure via a crafted server.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
Low
Partial data leak
Integrity
None
No data modification
Availability
None
No disruption
CVSS Vector v3.1
Weakness Type (CWE)
Vulnerable Products 3
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Gnu Sasl
cpe:2.3:a:gnu:sasl:*:*:*:*:*:*:*:*
|
— |
2.2.4
|
|
Debian Debian_Linux
cpe:2.3:o:debian:debian_linux:13.0:*:*:*:*:*:*:*
|
— | — |
|
Gnu Gnu_Sasl
cpe:2.3:a:gnu:gnu_sasl:*:*:*:*:*:*:*:*
|
— |
2.2.4
|
References 5
https://ftp.gnu.org/gnu/gsasl/
cve@mitre.org
https://lists.debian.org/debian-security-announce/2026/msg00259.html
cve@mitre.org
https://lists.gnu.org/archive/html/help-gsasl/2026-06/msg00000.html
cve@mitre.org
https://www.gnu.org/software/gsasl/
cve@mitre.org
https://lists.debian.org/debian-lts-announce/2026/07/msg00049.html
af854a3a-2127-422b-91ae-364da2661108