CVE & CISA-KEV Catalog

CVE-2023-25566

HIGH
7.5
CVSS v3
NVD

Description

GSS-NTLMSSP is a mechglue plugin for the GSSAPI library that implements NTLM authentication. Prior to version 1.2.0, a memory leak can be triggered when parsing usernames which can trigger a denial-of-service. The domain portion of a username may be overridden causing an allocated memory area the size of the domain name to be leaked. An attacker can leak memory via the main `gss_accept_sec_context` entry point, potentially causing a denial-of-service. This issue is fixed in version 1.2.0.

CWE-401Missing Release of Memory (Memory Leak)

How to fix

Remediation Available
gss-ntlmsspDebian
Fixed in:1.2.0-1CVE-2023-25566
Fixed in:1.2.0-1CVE-2023-25566
Fixed in:1.2.0-1CVE-2023-25566
gssntlmsspRocky
Fixed in:0:1.2.0-1.el8_8RHSA-2023:3097
Fixed in:0:1.2.0-1.el8_8RHSA-2023:3097
Fixed in:0:1.2.0-1.el8_8RHSA-2023:3097
Fixed in:0:1.2.0-1.el8_8RHSA-2023:3097
Fixed in:0:1.2.0-1.el8_8RHSA-2023:3097
gssntlmsspRed Hat / RHEL
Fixed in:0:1.2.0-1.el8_8RHSA-2023:3097
Fixed in:0:1.2.0-1.el8_8RHSA-2023:3097
Fixed in:0:1.2.0-1.el8_8RHSA-2023:3097
Fixed in:0:1.2.0-1.el8_8RHSA-2023:3097
Fixed in:0:1.2.0-1.el8_8RHSA-2023:3097
gssntlmssp-debuginfoRocky
Fixed in:0:1.2.0-1.el8_8RHSA-2023:3097
Fixed in:0:1.2.0-1.el8_8RHSA-2023:3097
Fixed in:0:1.2.0-1.el8_8RHSA-2023:3097
Fixed in:0:1.2.0-1.el8_8RHSA-2023:3097
gssntlmssp-debuginfoRed Hat / RHEL
Fixed in:0:1.2.0-1.el8_8RHSA-2023:3097
Fixed in:0:1.2.0-1.el8_8RHSA-2023:3097
Fixed in:0:1.2.0-1.el8_8RHSA-2023:3097
Fixed in:0:1.2.0-1.el8_8RHSA-2023:3097
gssntlmssp-debugsourceRed Hat / RHEL
Fixed in:0:1.2.0-1.el8_8RHSA-2023:3097
Fixed in:0:1.2.0-1.el8_8RHSA-2023:3097
Fixed in:0:1.2.0-1.el8_8RHSA-2023:3097
Fixed in:0:1.2.0-1.el8_8RHSA-2023:3097
gssntlmssp-debugsourceRocky
Fixed in:0:1.2.0-1.el8_8RHSA-2023:3097
Fixed in:0:1.2.0-1.el8_8RHSA-2023:3097
Fixed in:0:1.2.0-1.el8_8RHSA-2023:3097
Fixed in:0:1.2.0-1.el8_8RHSA-2023:3097

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityNone
IntegrityNone
AvailabilityHigh

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

Exploit Intelligence

1.10%probability of exploitation in 30 days
62ndpercentile

Moderate risk: more likely to be exploited than 62% of all known CVEs.

References

Third-Party Advisory2

Related Vulnerabilities

Other CWE-401 (Missing Release of Memory (Memory Leak)) vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2020-13934High7.564%-Fix
CVE-2016-6304High7.563%-Fix
CVE-2019-12265Medium5.355%-Fix
CVE-2001-0136Medium5.045%--
CVE-2016-4232High7.536%--
CVE-2001-0543Medium5.021%--
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.