rhsa-2003:297
Vulnerability from csaf_redhat
Published
2003-11-12 14:06
Modified
2024-11-21 22:52
Summary
Red Hat Security Advisory: stunnel security update
Notes
Topic
Updated stunnel packages are now available. These updates address problems
stemming from improper use of non-reentrant functions in signal handlers.
Details
Stunnel is a wrapper for network connections. It can be used to tunnel an
unencrypted network connection over an encrypted connection (encrypted
using SSL or TLS) or to provide an encrypted means of connecting to
services that do not natively support encryption.
A previous advisory provided updated packages to address re-entrancy
problems in stunnel's signal-handling routines. These updates did not
address other bugs that were found by Steve Grubb, and introduced an
additional bug, which was fixed in stunnel 3.26.
All users should upgrade to these errata packages, which address these
issues by updating stunnel to version 3.26.
NOTE: After upgrading, any instances of stunnel configured to run in daemon
mode should be restarted, and any active network connections that are
currently being serviced by stunnel should be terminated and reestablished.
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 stunnel packages are now available. These updates address problems\nstemming from improper use of non-reentrant functions in signal handlers.",
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"text": "Stunnel is a wrapper for network connections. It can be used to tunnel an\nunencrypted network connection over an encrypted connection (encrypted\nusing SSL or TLS) or to provide an encrypted means of connecting to\nservices that do not natively support encryption.\n\nA previous advisory provided updated packages to address re-entrancy\nproblems in stunnel\u0027s signal-handling routines. These updates did not\naddress other bugs that were found by Steve Grubb, and introduced an\nadditional bug, which was fixed in stunnel 3.26.\n\nAll users should upgrade to these errata packages, which address these\nissues by updating stunnel to version 3.26.\n\nNOTE: After upgrading, any instances of stunnel configured to run in daemon\nmode should be restarted, and any active network connections that are\ncurrently being serviced by stunnel should be terminated and reestablished.",
"title": "Details"
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"ids": [
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"notes": [
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"text": "Stunnel 4.00, and 3.24 and earlier, leaks a privileged file descriptor returned by listen(), which allows local users to hijack the Stunnel server.",
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"release_date": "2003-09-03T00:00:00+00:00",
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"date": "2003-11-12T14:06:00+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.\n\nIf up2date fails to connect to Red Hat Network due to SSL Certificate \nErrors, you need to install a version of the up2date client with an updated \ncertificate. The latest version of up2date is available from the Red Hat \nFTP site and may also be downloaded directly from the RHN website:\n\nhttps://rhn.redhat.com/help/latest-up2date.pxt",
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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.
- 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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