Bug 1710609 (CVE-2019-5435)

Summary:	CVE-2019-5435 curl: Integer overflows in curl_url_set() function
Product:	[Other] Security Response	Reporter:	Pedro Sampaio <psampaio>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	andrew.slice, bodavis, csutherl, dbhole, gzaronik, hhorak, jclere, john.j5live, jorton, kanderso, kdudka, lgao, luhliari, mbabacek, msekleta, mturk, myarboro, omajid, paul, rwagner, security-response-team, twalsh, weli
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	curl 7.65.0	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-05-20 05:51:01 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:
Bug Depends On:	1712839
Bug Blocks:	1710621

Description Pedro Sampaio 2019-05-15 20:58:23 UTC

libcurl contains two integer overflows in the `curl_url_set()` function that
if triggered, can lead to a too small buffer allocation and a subsequent heap
buffer overflow.

Upstream patch:

https://github.com/curl/curl/commit/5fc28510a4664f4

References:

https://curl.haxx.se/docs/CVE-2019-5435.html

Comment 2 Huzaifa S. Sidhpurwala 2019-05-20 05:45:25 UTC

This flaw only manifests itself on 32bit arches. 

There are two entry points to this issue, on 32 bit architectures.

By asking libcurl to parse a string, passing in a string longer than 2GB to this API: `curl_url_set(uh, CURLUPART_URL, "string", 0);` triggers the bug.

Asking libcurl to update a URL with a new string, and URL encoded it in the process, by passing in a string longer than 1.33GB to this API:
`curl_url_set(uh, CURLUPART_*, "string", CURLU_URLENCODE);` triggers the bug.

This bug was introduced in August 2018 in
[commit fb30ac5a2d](https://github.com/curl/curl/commit/fb30ac5a2d63773c52).

Comment 3 Huzaifa S. Sidhpurwala 2019-05-20 08:42:35 UTC

Acknowledgments:

Name: the Curl project
Upstream: Wenchao Li

Comment 4 Dhananjay Arunesh 2019-05-22 11:01:16 UTC

Created curl tracking bugs for this issue:

Affects: fedora-all [bug 1712839]

Comment 7 errata-xmlrpc 2020-10-28 15:49:38 UTC

This issue has been addressed in the following products:

  Red Hat JBoss Core Services

Via RHSA-2020:4383 https://access.redhat.com/errata/RHSA-2020:4383

Comment 8 errata-xmlrpc 2020-10-28 16:00:45 UTC

This issue has been addressed in the following products:

  JBoss Core Services on RHEL 7
  JBoss Core Services on RHEL 6

Via RHSA-2020:4384 https://access.redhat.com/errata/RHSA-2020:4384