Bug 1852809 (CVE-2020-15396) - CVE-2020-15396 hylafax+: race condition in faxsetup utility could lead to privileges escalation
Summary: CVE-2020-15396 hylafax+: race condition in faxsetup utility could lead to pri...
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2020-15396
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1852810 1852811
Blocks:
TreeView+ depends on / blocked
 
Reported: 2020-07-01 10:59 UTC by Marian Rehak
Modified: 2020-07-01 13:27 UTC (History)
1 user (show)

Fixed In Version: hylafax+ 7.0.2
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Last Closed: 2020-07-01 13:27:37 UTC
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Description Marian Rehak 2020-07-01 10:59:09 UTC 
In HylaFAX+ through 7.0.2 and HylaFAX Enterprise, the faxsetup utility calls chown on files in user-owned directories. By winning a race, a local attacker could use this to escalate his privileges to root.

Upstream Reference:

https://sourceforge.net/p/hylafax/HylaFAX+/2534/
Comment 1 Marian Rehak 2020-07-01 10:59:36 UTC 
Created hylafax+ tracking bugs for this issue:

Affects: epel-all [bug 1852811]
Affects: fedora-all [bug 1852810]
Comment 2 Product Security DevOps Team 2020-07-01 13:27:37 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.
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