CVE-2023-25563

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Summary

CVECVE-2023-25563
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2023-02-14 18:15:00 UTC
Updated2023-02-22 18:37:00 UTC
DescriptionGSS-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.

Risk And Classification

Problem Types: CWE-125

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Gss-ntlmssp Project Gss-ntlmssp All All All All

References

ReferenceSourceLinkTags
Multiple out-of-bounds read when decoding NTLM fields · Advisory · gssapi/gss-ntlmssp · GitHub MISC github.com
Release Patched several CVEs reported by GitHub Security Lab · gssapi/gss-ntlmssp · GitHub MISC github.com
Out-of-bounds read in multiple decode functions · gssapi/gss-ntlmssp@97c62c6 · GitHub MISC github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 160669 Oracle Enterprise Linux Security Update for gssntlmssp (ELSA-2023-3097)
  • 182576 Debian Security Update for gss-ntlmssp (CVE-2023-25563)
  • 241488 Red Hat Update for gssntlmssp (RHSA-2023:3097)
  • 283735 Fedora Security Update for gssntlmssp (FEDORA-2023-cb63c0f615)
  • 378651 Alibaba Cloud Linux Security Update for gssntlmssp (ALINUX3-SA-2023:0068)
  • 941109 AlmaLinux Security Update for gssntlmssp (ALSA-2023:3097)

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