CVE-2011-4609
First published: Tue Dec 13 2011(Updated: )
It was reported that if a process that called glibc's svc_run() exceeded the limit of opened files for a longer period of time, that accept() in rendezvous_request()/svcudp_recv() would fail with the EMFILE error, which would lead to looping between poll(), accept(), and 'for' loops which would consume a lot of CPU time. This could lead to an unresponsive system that requires human intervention (service restart or system restart) to resolve.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| GNU C Library | =2.1.2 | |
| GNU C Library | =2.0.5 | |
| GNU C Library | =2.0.6 | |
| GNU C Library | =2.1.1 | |
| GNU C Library | =2.0.3 | |
| GNU C Library | =2.0 | |
| GNU C Library | =2.13 | |
| GNU C Library | =2.1.1.6 | |
| GNU C Library | =2.1 | |
| GNU C Library | =2.1.9 | |
| GNU C Library | =2.0.1 | |
| GNU C Library | =2.0.4 | |
| GNU C Library | =2.0.2 | |
| GNU C Library | =2.1.3 | |
| GNU C Library | <=2.14 | |
| GNU C Library (glibc) | <=2.14 | |
| GNU C Library (glibc) | =2.0 | |
| GNU C Library (glibc) | =2.0.1 | |
| GNU C Library (glibc) | =2.0.2 | |
| GNU C Library (glibc) | =2.0.3 | |
| GNU C Library (glibc) | =2.0.4 | |
| GNU C Library (glibc) | =2.0.5 | |
| GNU C Library (glibc) | =2.0.6 | |
| GNU C Library (glibc) | =2.1 | |
| GNU C Library (glibc) | =2.1.1 | |
| GNU C Library (glibc) | =2.1.1.6 | |
| GNU C Library (glibc) | =2.1.2 | |
| GNU C Library (glibc) | =2.1.3 | |
| GNU C Library (glibc) | =2.1.9 | |
| GNU C Library (glibc) | =2.13 |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=767299
- https://bugzilla.redhat.com/show_bug.cgi/attachment.cgi?id=546362&action=diff
- https://bugzilla.redhat.com/show_bug.cgi/attachment.cgi?id=546362&action=edit
- https://rhn.redhat.com/errata/RHSA-2012-0058.html
- https://rhn.redhat.com/errata/RHSA-2012-0126.html
- https://rhn.redhat.com/errata/RHSA-2012-0125.html
Frequently Asked Questions
What is the severity of CVE-2011-4609?
CVE-2011-4609 has a medium severity level due to the potential for denial-of-service conditions.
How do I fix CVE-2011-4609?
To fix CVE-2011-4609, ensure you upgrade to a patched version of glibc that addresses this vulnerability.
Which versions of glibc are affected by CVE-2011-4609?
CVE-2011-4609 affects multiple versions of glibc, including 2.0.0 through 2.1.9 and some versions up to 2.14.
What are the potential impacts of CVE-2011-4609?
The potential impacts of CVE-2011-4609 include application crashes and denial-of-service occurrences when file descriptor limits are exceeded.
Is CVE-2011-4609 still a concern for modern systems?
CVE-2011-4609 is less of a concern for modern systems that run updated versions of glibc, but it should still be monitored.
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