title: Samba: out-of-bounds read in winbind auth_crap
description: An out-of-bounds read vulnerability was found in Samba due to insufficient length checks in winbindd_pam_auth_crap.c. When performing NTLM authentication, the client replies to cryptographic challenges back to the server. These replies have variable lengths, and Winbind fails to check the lan manager response length. When Winbind is used for NTLM authentication, a maliciously crafted request can trigger an out-of-bounds read in Winbind, possibly resulting in a crash.
problem types: Out-of-bounds Read
affected:
{
product: samba
vendor: n/a
versions:
version: 4.16.11, status: unaffected
version: 4.17.10, status: unaffected
version: 4.18.5, status: unaffected
}
{
vendor: Red Hat
product: Red Hat Enterprise Linux 8
collectionURL: https://access.redhat.com/downloads/content/package-browser/
packageName: samba
defaultStatus: affected
versions:
version: 0:4.18.6-1.el8, lessThan: *, versionType: rpm, status: unaffected
cpe: [cpe:/o:redhat:enterprise_linux:8::baseos, cpe:/a:redhat:enterprise_linux:8::crb, cpe:/a:redhat:enterprise_linux:8::appstream]
}
{
vendor: Red Hat
product: Red Hat Enterprise Linux 8
collectionURL: https://access.redhat.com/downloads/content/package-browser/
packageName: samba
defaultStatus: affected
versions:
version: 0:4.18.6-1.el8, lessThan: *, versionType: rpm, status: unaffected
cpe: [cpe:/o:redhat:enterprise_linux:8::baseos, cpe:/a:redhat:enterprise_linux:8::crb, cpe:/a:redhat:enterprise_linux:8::appstream]
}
{
vendor: Red Hat
product: Red Hat Enterprise Linux 8.6 Extended Update Support
collectionURL: https://access.redhat.com/downloads/content/package-browser/
packageName: samba
defaultStatus: affected
versions:
version: 0:4.15.5-15.el8_6, lessThan: *, versionType: rpm, status: unaffected
cpe: [cpe:/a:redhat:rhel_eus:8.6::appstream, cpe:/o:redhat:enterprise_linux:8::hypervisor, cpe:/a:redhat:rhel_eus:8.6::crb, cpe:/o:redhat:rhel_eus:8.6::baseos]
}
{
vendor: Red Hat
product: Red Hat Enterprise Linux 8.8 Extended Update Support
collectionURL: https://access.redhat.com/downloads/content/package-browser/
packageName: samba
defaultStatus: affected
versions:
version: 0:4.17.5-5.el8_8, lessThan: *, versionType: rpm, status: unaffected
cpe: [cpe:/a:redhat:rhel_eus:8.8::crb, cpe:/o:redhat:rhel_eus:8.8::baseos, cpe:/a:redhat:rhel_eus:8.8::appstream]
}
{
vendor: Red Hat
product: Red Hat Enterprise Linux 9
collectionURL: https://access.redhat.com/downloads/content/package-browser/
packageName: samba
defaultStatus: affected
versions:
version: 0:4.18.6-100.el9, lessThan: *, versionType: rpm, status: unaffected
cpe: [cpe:/a:redhat:enterprise_linux:9::crb, cpe:/a:redhat:enterprise_linux:9::appstream, cpe:/o:redhat:enterprise_linux:9::baseos, cpe:/a:redhat:enterprise_linux:9::resilientstorage]
}
{
vendor: Red Hat
product: Red Hat Enterprise Linux 9
collectionURL: https://access.redhat.com/downloads/content/package-browser/
packageName: samba
defaultStatus: affected
versions:
version: 0:4.18.6-100.el9, lessThan: *, versionType: rpm, status: unaffected
cpe: [cpe:/a:redhat:enterprise_linux:9::crb, cpe:/a:redhat:enterprise_linux:9::appstream, cpe:/o:redhat:enterprise_linux:9::baseos, cpe:/a:redhat:enterprise_linux:9::resilientstorage]
}
{
vendor: Red Hat
product: Red Hat Virtualization 4 for Red Hat Enterprise Linux 8
collectionURL: https://access.redhat.com/downloads/content/package-browser/
packageName: samba
defaultStatus: affected
versions:
version: 0:4.15.5-15.el8_6, lessThan: *, versionType: rpm, status: unaffected
cpe: [cpe:/a:redhat:rhel_eus:8.6::appstream, cpe:/o:redhat:enterprise_linux:8::hypervisor, cpe:/a:redhat:rhel_eus:8.6::crb, cpe:/o:redhat:rhel_eus:8.6::baseos]
}
{
vendor: Red Hat
product: Red Hat Enterprise Linux 6
collectionURL: https://access.redhat.com/downloads/content/package-browser/
packageName: samba
defaultStatus: unknown
cpes: cpe:/o:redhat:enterprise_linux:6
}
{
vendor: Red Hat
product: Red Hat Enterprise Linux 6
collectionURL: https://access.redhat.com/downloads/content/package-browser/
packageName: samba4
defaultStatus: unknown
cpes: cpe:/o:redhat:enterprise_linux:6
}
{
vendor: Red Hat
product: Red Hat Enterprise Linux 7
collectionURL: https://access.redhat.com/downloads/content/package-browser/
packageName: samba
defaultStatus: unknown
cpes: cpe:/o:redhat:enterprise_linux:7
}
{
vendor: Red Hat
product: Red Hat Storage 3
collectionURL: https://access.redhat.com/downloads/content/package-browser/
packageName: samba
defaultStatus: affected
cpes: cpe:/a:redhat:storage:3
}
{
product: Fedora
vendor: Fedora
collectionURL: https://packages.fedoraproject.org/
packageName: samba
defaultStatus: affected
}
metrics:
other: [
content: {'value': 'Moderate', 'namespace': 'https://access.redhat.com/security/updates/classification/'}
type: Red Hat severity rating
]