rhsa-2003:261
Vulnerability from csaf_redhat
Published
2003-08-26 12:17
Modified
2025-11-21 17:26
Summary
Red Hat Security Advisory: : Updated pam_smb packages fix remote buffer overflow.
Notes
Topic
Updated pam_smb packages are now available which fix a security
vulnerability (buffer overflow).
Details
The pam_smb module is a pluggable authentication module (PAM) used to
authenticate users using an external Server Message Block (SMB) server.
A buffer overflow vulnerability has been found that affects unpatched
versions of pam_smb up to and including 1.1.6.
On systems that use pam_smb and are configured to authenticate a
remotely accessible service, an attacker can exploit this bug and
remotely execute arbitrary code. The Common Vulnerabilities and Exposures
project (cve.mitre.org) has assigned the name CAN-2003-0686 to this issue.
Red Hat Linux versions 7.2, 7.3, 8.0, and 9 ship with versions of pam_smb
that are vulnerable to this issue, however pam_smb is not enabled by default.
Users of pam_smb are advised to upgrade to these erratum packages, which
contain a patch to version 1.1.6 to correct this issue.
Red Hat would like to thank Dave Airlie of the Samba team for notifying us
of this issue.
Terms of Use
This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
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"text": "Updated pam_smb packages are now available which fix a security\nvulnerability (buffer overflow).",
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"text": "The pam_smb module is a pluggable authentication module (PAM) used to\nauthenticate users using an external Server Message Block (SMB) server.\n\nA buffer overflow vulnerability has been found that affects unpatched\nversions of pam_smb up to and including 1.1.6. \n\nOn systems that use pam_smb and are configured to authenticate a\nremotely accessible service, an attacker can exploit this bug and\nremotely execute arbitrary code. The Common Vulnerabilities and Exposures\nproject (cve.mitre.org) has assigned the name CAN-2003-0686 to this issue.\n\nRed Hat Linux versions 7.2, 7.3, 8.0, and 9 ship with versions of pam_smb\nthat are vulnerable to this issue, however pam_smb is not enabled by default.\n\nUsers of pam_smb are advised to upgrade to these erratum packages, which\ncontain a patch to version 1.1.6 to correct this issue.\n\nRed Hat would like to thank Dave Airlie of the Samba team for notifying us\nof this issue.",
"title": "Details"
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"url": "https://security.access.redhat.com/data/csaf/v2/advisories/2003/rhsa-2003_261.json"
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"title": "Red Hat Security Advisory: : Updated pam_smb packages fix remote buffer overflow.",
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"current_release_date": "2025-11-21T17:26:26+00:00",
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"date": "2003-08-26T12:17:00+00:00",
"number": "1",
"summary": "Initial version"
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{
"date": "2003-08-26T00:00:00+00:00",
"number": "2",
"summary": "Last updated version"
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"number": "3",
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"ids": [
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"text": "1617064"
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"notes": [
{
"category": "description",
"text": "Buffer overflow in PAM SMB module (pam_smb) 1.1.6 and earlier, when authenticating to a remote service, allows remote attackers to execute arbitrary code.",
"title": "Vulnerability description"
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],
"release_date": "2003-08-26T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2003-08-26T12:17:00+00:00",
"details": "Before applying this update, make sure all previously released errata\nrelevant to your system have been applied.\n\nTo update all RPMs for your particular architecture, run:\n\nrpm -Fvh [filenames]\n\nwhere [filenames] is a list of the RPMs you wish to upgrade. Only those\nRPMs which are currently installed will be updated. Those RPMs which are\nnot installed but included in the list will not be updated. Note that you\ncan also use wildcards (*.rpm) if your current directory *only* contains the\ndesired RPMs.\n\nPlease note that this update is also available via Red Hat Network. Many\npeople find this an easier way to apply updates. To use Red Hat Network,\nlaunch the Red Hat Update Agent with the following command:\n\nup2date\n\nThis will start an interactive process that will result in the appropriate\nRPMs being upgraded on your system.",
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"url": "https://access.redhat.com/errata/RHSA-2003:261"
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"title": "security flaw"
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}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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