CVE-2020-15396: Race Condition
First published: Tue Jun 30 2020(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| HylaFAX+ | <=7.0.2 | |
| HylaFAX Enterprise | ||
| Red Hat Fedora | =31 | |
| Red Hat Fedora | =32 | |
| openSUSE Backports | =15.0-sp1 | |
| openSUSE Backports | =15.0-sp2 | |
| SUSE Linux | =15.1 | |
| SUSE Linux | =15.2 |
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Reference Links
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00039.html
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00040.html
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00046.html
- http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00054.html
- https://bugzilla.suse.com/show_bug.cgi?id=1173521
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/J52QFVREJWJ35YSEEDDRMZQ2LM2H2WE6/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/Y46FOVJUS5SO44A2VEKR7DXEHTI4WK5L/
- https://security.gentoo.org/glsa/202007-06
- https://sourceforge.net/p/hylafax/HylaFAX+/2534/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y46FOVJUS5SO44A2VEKR7DXEHTI4WK5L/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/J52QFVREJWJ35YSEEDDRMZQ2LM2H2WE6/
Frequently Asked Questions
What is the severity of CVE-2020-15396?
CVE-2020-15396 has been classified with a medium severity level.
How do I fix CVE-2020-15396?
To fix CVE-2020-15396, ensure that you upgrade to the version of HylaFAX+ greater than 7.0.2 or apply any relevant patches provided by your distribution.
Who is affected by CVE-2020-15396?
CVE-2020-15396 affects users of HylaFAX+ versions up to and including 7.0.2 and various versions of HylaFAX Enterprise, as well as specific Fedora and openSUSE distributions.
What type of attack can be executed using CVE-2020-15396?
An attacker can escalate their privileges to root by exploiting a race condition in the faxsetup utility.
Is CVE-2020-15396 a local or remote vulnerability?
CVE-2020-15396 is a local vulnerability that requires access to the affected system to exploit.
- agent/type
- collector/mitre-cve
- source/MITRE
- agent/author
- agent/severity
- agent/weakness
- agent/references
- agent/last-modified-date
- agent/remedy
- agent/event
- agent/first-publish-date
- agent/description
- agent/source
- agent/softwarecombine
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/hylafax\+ project
- canonical/hylafax+
- version/hylafax+/7.0.2
- vendor/ifax
- canonical/hylafax enterprise
- vendor/fedoraproject
- canonical/red hat fedora
- version/red hat fedora/31
- version/red hat fedora/32
- vendor/opensuse
- canonical/opensuse backports
- version/opensuse backports/15.0-sp1
- version/opensuse backports/15.0-sp2
- canonical/suse linux
- version/suse linux/15.1
- version/suse linux/15.2