CVE-2023-25564

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Summary

CVECVE-2023-25564
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2023-02-14 18:15:00 UTC
Updated2023-02-22 18:39:00 UTC
DescriptionGSS-NTLMSSP is a mechglue plugin for the GSSAPI library that implements NTLM authentication. Prior to version 1.2.0, memory corruption can be triggered when decoding UTF16 strings. The variable `outlen` was not initialized and could cause writing a zero to an arbitrary place in memory if `ntlm_str_convert()` were to fail, which would leave `outlen` uninitialized. This can lead to a denial of service if the write hits unmapped memory or randomly corrupts a byte in the application memory space. This vulnerability can trigger an out-of-bounds write, leading to memory corruption. This vulnerability can be triggered via the main `gss_accept_sec_context` entry point. This issue is fixed in version 1.2.0.

Risk And Classification

Problem Types: CWE-787

NVD Known Affected Configurations (CPE 2.3)

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

References

ReferenceSourceLinkTags
Release Patched several CVEs reported by GitHub Security Lab · gssapi/gss-ntlmssp · GitHub MISC github.com
GHSL-2023-013: Memory corruption decoding UTF16 · gssapi/gss-ntlmssp@c753000 · GitHub MISC github.com
Memory corruption when decoding UTF16 strings · Advisory · gssapi/gss-ntlmssp · 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)
  • 183524 Debian Security Update for gss-ntlmssp (CVE-2023-25564)
  • 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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