rhsa-2003:249
Vulnerability from csaf_redhat
Published
2003-08-22 21:09
Modified
2024-11-21 22:48
Summary
Red Hat Security Advisory: glibc security update
Notes
Topic
Updated glibc packages that fix a number of bugs as well as a buffer
overflow issue are now available.
Details
The GNU libc package (known as glibc) contains the standard C libraries
used by applications.
A bug in the getgrouplist function can cause a buffer overflow if
the size of the group list is too small to hold all the user's groups.
This overflow can cause segmentation faults in user applications, which may
have security implications, depending on the application in question. This
vulnerability exists only when an administrator has placed a user in a
number of groups larger than that expected by an application. Therefore,
there is no risk in instances where users are members of few groups. The
Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned
the name CAN-2003-0689 to this issue.
In addition, a number of other bugs in glibc have been fixed:
- An error prevented gdb from correctly debugging programs linked to
libpthread.
- A race condition existed in the malloc routine for IA64 platforms, which
could cause memory corruption.
- An error in pthread_spinlocks prevents spinlocks from functioning
correctly on IA64 platforms.
All users should upgrade to these errata packages, which contain patches to
the glibc libraries correcting 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": "The GNU libc package (known as glibc) contains the standard C libraries\nused by applications.\n\nA bug in the getgrouplist function can cause a buffer overflow if \nthe size of the group list is too small to hold all the user\u0027s groups. \nThis overflow can cause segmentation faults in user applications, which may\nhave security implications, depending on the application in question. This\nvulnerability exists only when an administrator has placed a user in a\nnumber of groups larger than that expected by an application. Therefore,\nthere is no risk in instances where users are members of few groups. The\nCommon Vulnerabilities and Exposures project (cve.mitre.org) has assigned\nthe name CAN-2003-0689 to this issue.\n\nIn addition, a number of other bugs in glibc have been fixed:\n \n- An error prevented gdb from correctly debugging programs linked to\nlibpthread. \n \n- A race condition existed in the malloc routine for IA64 platforms, which\ncould cause memory corruption.\n\n- An error in pthread_spinlocks prevents spinlocks from functioning\ncorrectly on IA64 platforms.\n\nAll users should upgrade to these errata packages, which contain patches to\nthe glibc libraries correcting these issues.",
"title": "Details"
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"title": "Red Hat Security Advisory: glibc security update",
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"text": "The getgrouplist function in GNU libc (glibc) 2.2.4 and earlier allows attackers to cause a denial of service (segmentation fault) and execute arbitrary code when a user is a member of a large number of groups, which can cause a buffer overflow.",
"title": "Vulnerability description"
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"release_date": "2003-04-01T00:00:00+00:00",
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"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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}
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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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