rhsa-2011_0261
Vulnerability from csaf_redhat
Published
2011-02-16 14:26
Modified
2024-11-22 03:51
Summary
Red Hat Security Advisory: bash security and bug fix update
Notes
Topic
Updated bash packages that fix one security issue and several bugs are now
available for Red Hat Enterprise Linux 4.
The Red Hat Security Response Team has rated this update as having low
security impact. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available from the CVE link in
the References section.
Details
Bash (Bourne-again shell) is the default shell for Red Hat Enterprise
Linux.
It was found that certain scripts bundled with the Bash documentation
created temporary files in an insecure way. A malicious, local user could
use this flaw to conduct a symbolic link attack, allowing them to overwrite
the contents of arbitrary files accessible to the victim running the
scripts. (CVE-2008-5374)
This update also fixes the following bugs:
* If a child process's PID was the same as the PID of a previously ended
child process, Bash did not wait for that child process. In some cases this
caused "Resource temporarily unavailable" errors. With this update, Bash
recycles PIDs and waits for processes with recycled PIDs. (BZ#521134)
* Bash's built-in "read" command had a memory leak when "read" failed due
to no input (pipe for stdin). With this update, the memory is correctly
freed. (BZ#537029)
* Bash did not correctly check for a valid multi-byte string when setting
the IFS value, causing Bash to crash. With this update, Bash checks the
multi-byte string and no longer crashes. (BZ#539536)
* Bash incorrectly set locale settings when using the built-in "export"
command and setting the locale on the same line (for example, with
"LC_ALL=C export LC_ALL"). With this update, Bash correctly sets locale
settings. (BZ#539538)
All bash users should upgrade to these updated packages, which contain
backported patches to correct these issues.
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 bash packages that fix one security issue and several bugs are now\navailable for Red Hat Enterprise Linux 4.\n\nThe Red Hat Security Response Team has rated this update as having low\nsecurity impact. A Common Vulnerability Scoring System (CVSS) base score,\nwhich gives a detailed severity rating, is available from the CVE link in\nthe References section.",
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"text": "Bash (Bourne-again shell) is the default shell for Red Hat Enterprise\nLinux.\n\nIt was found that certain scripts bundled with the Bash documentation\ncreated temporary files in an insecure way. A malicious, local user could\nuse this flaw to conduct a symbolic link attack, allowing them to overwrite\nthe contents of arbitrary files accessible to the victim running the\nscripts. (CVE-2008-5374)\n\nThis update also fixes the following bugs:\n\n* If a child process\u0027s PID was the same as the PID of a previously ended\nchild process, Bash did not wait for that child process. In some cases this\ncaused \"Resource temporarily unavailable\" errors. With this update, Bash\nrecycles PIDs and waits for processes with recycled PIDs. (BZ#521134)\n\n* Bash\u0027s built-in \"read\" command had a memory leak when \"read\" failed due\nto no input (pipe for stdin). With this update, the memory is correctly\nfreed. (BZ#537029)\n\n* Bash did not correctly check for a valid multi-byte string when setting\nthe IFS value, causing Bash to crash. With this update, Bash checks the\nmulti-byte string and no longer crashes. (BZ#539536)\n\n* Bash incorrectly set locale settings when using the built-in \"export\"\ncommand and setting the locale on the same line (for example, with\n\"LC_ALL=C export LC_ALL\"). With this update, Bash correctly sets locale\nsettings. (BZ#539538)\n\nAll bash users should upgrade to these updated packages, which contain\nbackported patches to correct these issues.",
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"url": "https://security.access.redhat.com/data/csaf/v2/advisories/2011/rhsa-2011_0261.json"
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"4WS:bash-0:3.0-27.el4.s390",
"4WS:bash-0:3.0-27.el4.s390x",
"4WS:bash-0:3.0-27.el4.src",
"4WS:bash-0:3.0-27.el4.x86_64",
"4WS:bash-debuginfo-0:3.0-27.el4.i386",
"4WS:bash-debuginfo-0:3.0-27.el4.ia64",
"4WS:bash-debuginfo-0:3.0-27.el4.ppc",
"4WS:bash-debuginfo-0:3.0-27.el4.s390",
"4WS:bash-debuginfo-0:3.0-27.el4.s390x",
"4WS:bash-debuginfo-0:3.0-27.el4.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Low"
}
],
"title": "bash: Insecure temporary file use in aliasconv.sh, aliasconv.bash, cshtobash (symlink attack)"
}
]
}
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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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