Bug 76127
Summary: | Internal service daytime/tcp do no longer close connection | ||
---|---|---|---|
Product: | [Retired] Red Hat Linux | Reporter: | Peter Bieringer <pb> |
Component: | xinetd | Assignee: | Trond Eivind Glomsrxd <teg> |
Status: | CLOSED DUPLICATE | QA Contact: | Brock Organ <borgan> |
Severity: | medium | Docs Contact: | |
Priority: | high | ||
Version: | 7.3 | Keywords: | Security |
Target Milestone: | --- | ||
Target Release: | --- | ||
Hardware: | i386 | ||
OS: | Linux | ||
Whiteboard: | |||
Fixed In Version: | Doc Type: | Bug Fix | |
Doc Text: | Story Points: | --- | |
Clone Of: | Environment: | ||
Last Closed: | 2002-10-18 14:51:16 UTC | Type: | --- |
Regression: | --- | Mount Type: | --- |
Documentation: | --- | CRM: | |
Verified Versions: | Category: | --- | |
oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
Cloudforms Team: | --- | Target Upstream Version: | |
Embargoed: |
Description
Peter Bieringer
2002-10-17 08:28:15 UTC
This does lead to DoS. I have ~15 computers hitting daytime every 5 minutes. After about a 12 hours, connections are no longer accepted and my message log starts seeing "too many open files" Oct 18 08:58:35 fmymca xinetd[31399]: service imap, accept: Too many open files (errno = 24) Oct 18 08:58:35 fmymca xinetd[31399]: service time-stream, accept: Too many open files (errno = 24) Oct 18 08:58:41 fmymca xinetd[31399]: service imap, accept: Too many open files (errno = 24) Oct 18 08:58:41 fmymca xinetd[31399]: service time-stream, accept: Too many open files (errno = 24) Oct 18 08:59:29 fmymca xinetd[31399]: service time-stream, accept: Too many open files (errno = 24) Oct 18 08:59:47 fmymca xinetd[31399]: service time-stream, accept: Too many open files (errno = 24) Oct 18 08:59:57 fmymca xinetd[31399]: service imap, accept: Too many open files (errno = 24) Oct 18 08:59:57 fmymca xinetd[31399]: service time-stream, accept: Too many open files (errno = 24) Oct 18 09:00:01 fmymca xinetd[31399]: service time-stream, accept: Too many open files (errno = 24) Oct 18 09:00:01 fmymca xinetd[31399]: service time-stream, accept: Too many open files (errno = 24) Oct 18 09:00:01 fmymca xinetd[31399]: service time-stream, accept: Too many open files (errno = 24) Oct 18 09:00:04 fmymca xinetd[31399]: service telnet, accept: Too many open files (errno = 24) I've increased priority because of the reported DoS, looks like this bug should be fixed really quickly by RHL and/or the xinetd developers. |