Bug 1668488 (CVE-2019-0190) - CVE-2019-0190 httpd: mod_ssl: infinite loop triggered by client-initiated renegotiation when using OpenSSL 1.1.1
Summary: CVE-2019-0190 httpd: mod_ssl: infinite loop triggered by client-initiated ren...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2019-0190
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1668489 1671282
Blocks: 1668499
TreeView+ depends on / blocked
 
Reported: 2019-01-22 21:06 UTC by Laura Pardo
Modified: 2022-03-13 16:50 UTC (History)
10 users (show)

Fixed In Version: httpd 2.4.38
Clone Of:
Environment:
Last Closed: 2019-01-31 09:58:29 UTC
Embargoed:

Attachments (Terms of Use)

Description Laura Pardo 2019-01-22 21:06:14 UTC 
A bug exists in the way mod_ssl handled client renegotiations. A remote attacker could send a carefully crafted request that would cause mod_ssl to enter a loop leading to a denial of service.  This bug can be only triggered with Apache HTTP Server version 2.4.37 when using OpenSSL version 1.1.1 or later, due to an interaction in changes to handling of renegotiation attempts.


References:
https://seclists.org/oss-sec/2019/q1/82
https://httpd.apache.org/security/vulnerabilities_24.html
Comment 1 Laura Pardo 2019-01-22 21:06:26 UTC 
Created httpd tracking bugs for this issue:

Affects: fedora-29 [bug 1668489]
Comment 2 Tomas Hoger 2019-01-31 09:49:56 UTC 
Upstream bug and commit:

https://bz.apache.org/bugzilla/show_bug.cgi?id=63052
https://svn.apache.org/viewvc?view=revision&revision=1851471
Comment 3 Tomas Hoger 2019-01-31 09:58:29 UTC 
OpenSSL 1.1.1 is not currently used by any released product containing httpd.
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