[users@httpd] Regarding CVE-2021-40438

2021-10-18 Thread alchemist vk
Hi All, I understand that, CVE-2021-40438 is fixed in httpd release 2.4.50 onwards. But I would like to know more about, how this issue can be exploitable in prior versions and can I know the commit id/patch details for this issue. Tried looking into commit details in github apache repo, but coul

Re: [users@httpd] Issue with Apache 2.4.51 hanging

2021-10-18 Thread Yann Ylavic
Hi Patrick, On Mon, Oct 18, 2021 at 10:13 PM Patrick Verdon wrote: > > Just a quick follow up - we've tried removing mod_http2 but still managed to > provoke a crash. See the error_log below when stopping/restarting after httpd > becomes unresponsive. It seems to have eliminated the "reslist_c

Re: [users@httpd] Issue with Apache 2.4.51 hanging

2021-10-18 Thread Patrick Verdon
Hi Yann, Just a quick follow up - we've tried removing mod_http2 but still managed to provoke a crash. See the error_log below when stopping/restarting after httpd becomes unresponsive. We need to be a bit more careful removing other modules to make sure they're not used, which is more time consum

Re: [users@httpd] Issue with Apache 2.4.51 hanging

2021-10-18 Thread Patrick Verdon
Hi Yann, Many thanks for the super quick response. We'll try to remove mod_http2 and other modules as you suggest to see if that helps. I'll get back to you once we've had a chance to test it. Thanks. Patrick *--* *Patrick Verdon | Founder* Web: www.youreko.com Mobile: +44 (0)7809 296438 Sky

Re: [users@httpd] Issue with Apache 2.4.51 hanging

2021-10-18 Thread Yann Ylavic
Hi Patrick, On Mon, Oct 18, 2021 at 11:27 AM Patrick Verdon wrote: > > # cat /var/log/httpd/error_log > httpd: misc/apr_reslist.c:161: reslist_cleanup: Assertion `rl->ntotal == 0' > failed. [] > *** Error in `/usr/sbin/httpd': corrupted size vs. prev_size: > 0x557f94567e4f *** [] > httpd: m

[users@httpd] Issue with Apache 2.4.51 hanging

2021-10-18 Thread Patrick Verdon
Hi All, I'd appreciate some feedback on an issue I'm experiencing. I've spent quite some time researching the problem as it causes a serious outage in our application. I've searched the Web, Stack Overflow, this list's mail archives, the latest Apache bugs, and more, but have not been able to find