CVE-2017-16927

Current Description

The scp_v0s_accept function in sesman/libscp/libscp_v0.c in the session manager in xrdp through 0.9.4 uses an untrusted integer as a write length, which allows local users to cause a denial of service (buffer overflow and application crash) or possibly have unspecified other impact via a crafted input stream.

Basic Data

PublishedNovember 23, 2017
Last ModifiedJuly 08, 2020
Assignercve@mitre.org
Data TypeCVE
Data FormatMITRE
Data Version4.0
Problem TypeCWE-119
CVE Data Version4.0

Base Metric V2

CVSS 2 - Version2.0
CVSS 2 - Vector StringAV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS 2 - Access VectorLOCAL
CVSS 2 - Access ComplexityLOW
CVSS 2 - AuthenticationNONE
CVSS 2 - Confidentiality ImpactCOMPLETE
CVSS 2 - Availability ImpactCOMPLETE
CVSS 2 - Base Score7.2
SeverityHIGH
Exploitability Score3.9
Impact Score10.0
Obtain All Privilegefalse
Obtain User Privilegefalse
Obtain Other Privilegefalse

Base Metric V3

CVSS 3 - Version3.0
CVSS 3 - Vector StringCVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 3 - Attack VectorLOCAL
CVSS 3 - Attack ComplexityLOW
CVSS 3 - Privileges RequiredNONE
CVSS 3 - User InteractionNONE
CVSS 3 - ScopeUNCHANGED
CVSS 3 - Confidentiality ImpactHIGH
CVSS 3 - Integrity ImpactHIGH
CVSS 3 - Availability ImpactHIGH
CVSS 3 - Base Score8.4
CVSS 3 - Base SeverityHIGH
Exploitability Score2.5
Base SeverityHIGH

Configurations

  • OR - Configuration 1
    Cpe VersionPartVendorProductVersionUpdateEditionLanguageSW EditionTarget SWTarget HWOtherVersion Start IncludingVersion End IncludingVersion Start ExcludingVersion End Excluding
    2.3ApplicationNeutrinolabsXrdp********0.9.4
  • OR - Configuration 2
    Cpe VersionPartVendorProductVersionUpdateEditionLanguageSW EditionTarget SWTarget HWOtherVersion Start IncludingVersion End IncludingVersion Start ExcludingVersion End Excluding
    2.3OSDebianDebian Linux7.0*******

Vulnerable Software List

VendorProductVersions
Neutrinolabs Xrdp *
Debian Debian Linux 7.0

References

NameSourceURLTags
https://github.com/neutrinolabs/xrdp/pull/958https://github.com/neutrinolabs/xrdp/pull/958CONFIRMIssue Tracking Patch
https://groups.google.com/forum/#!topic/xrdp-devel/PmVfMuy_xBAhttps://groups.google.com/forum/#!topic/xrdp-devel/PmVfMuy_xBACONFIRM
[debian-lts-announce] 20171211 [SECURITY] [DLA 1203-1] xrdp security updatehttps://lists.debian.org/debian-lts-announce/2017/12/msg00005.htmlMLIST