Bug 1827025 (CVE-2019-7443) - CVE-2019-7443 kauth: insecure handling of arguments in helpers
Summary: CVE-2019-7443 kauth: insecure handling of arguments in helpers
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2019-7443
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: 1827026 1827027
Blocks:
TreeView+ depends on / blocked
 
Reported: 2020-04-23 05:25 UTC by msiddiqu
Modified: 2021-02-16 20:14 UTC (History)
5 users (show)

Fixed In Version: kauth 5.55.0
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Clone Of:
Environment:
Last Closed: 2020-04-23 10:31:46 UTC
Embargoed:


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Description msiddiqu 2020-04-23 05:25:14 UTC
KDE KAuth before 5.55 allows the passing of parameters with arbitrary types to helpers running as root over DBus via DBusHelperProxy.cpp. Certain types can cause crashes, and trigger the decoding of arbitrary images with dynamically loaded plugins. In other words, KAuth unintentionally causes this plugin code to run as root, which increases the severity of any possible exploitation of a plugin vulnerability.

Upstream commit:

https://cgit.kde.org/kauth.git/commit/?id=fc70fb0161c1b9144d26389434d34dd135cd3f4a

External References:

https://kde.org/info/security/advisory-20190209-1.txt

References:

https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DAWLQKTUQJOAPXOFWJQAQCA4LVM2P45F/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PXVUJNXB6QKGPT6YJPJSG3U2BIR5XK5Y/

Comment 1 msiddiqu 2020-04-23 05:25:40 UTC
Created kf5-kauth tracking bugs for this issue:

Affects: epel-all [bug 1827027]
Affects: fedora-all [bug 1827026]

Comment 2 Product Security DevOps Team 2020-04-23 10:31:46 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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