Bug 1831058 (CVE-2020-9274)

Summary:	CVE-2020-9274 pure-ftpd: uninitialized pointer in the diraliases linked list leads to denial of service or information disclosure
Product:	[Other] Security Response	Reporter:	msiddiqu
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	aurelien, gregswift, jaromir.capik, mi, msehnout, olysonek
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-05-04 16:32:03 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:	1831059, 1831060
Bug Blocks:

Description msiddiqu 2020-05-04 14:34:03 UTC

An issue was discovered in Pure-FTPd 1.0.49. An uninitialized pointer vulnerability has been detected in the diraliases linked list. When the *lookup_alias(const char alias) or print_aliases(void) function is called, they fail to correctly detect the end of the linked list and try to access a non-existent list member. This is related to init_aliases in diraliases.c.

References:

https://github.com/jedisct1/pure-ftpd/commit/8d0d42542e2cb7a56d645fbe4d0ef436e38bcefa
https://lists.debian.org/debian-lts-announce/2020/02/msg00029.html
https://security.gentoo.org/glsa/202003-54
https://www.pureftpd.org/project/pure-ftpd/news/

Comment 1 msiddiqu 2020-05-04 14:34:48 UTC

Created pure-ftpd tracking bugs for this issue:

Affects: epel-all [bug 1831060]
Affects: fedora-all [bug 1831059]

Comment 2 Product Security DevOps Team 2020-05-04 16:32:03 UTC

This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.