Bug 1293857 - (CVE-2015-8373) CVE-2015-8373 kea: unexpected termination while handling a malformed packet
CVE-2015-8373 kea: unexpected termination while handling a malformed packet
Status: NEW
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
impact=moderate,public=20151222,repor...
: Security
Depends On: 1293858
Blocks:
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Reported: 2015-12-23 04:39 EST by Martin Prpič
Modified: 2016-01-10 14:25 EST (History)
2 users (show)

See Also:
Fixed In Version: Kea 0.9.2-P1, Kea 1.0.0-beta2
Doc Type: Bug Fix
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Description Martin Prpič 2015-12-23 04:39:02 EST
ISC Kea may terminate unexpectedly (crash) while handling a malformed client packet:

Related defects in the kea-dhcp4 and kea-dhcp6 servers can cause the server to crash during option processing if a client sends a malformed packet.

* The kea-dhcp4 server is vulnerable only in versions 0.9.2 and 1.0.0-beta, and furthermore only when logging at debug level 40 or higher. Servers running kea-dhcp4 versions 0.9.1 or lower, and servers which are not logging or are logging at debug level 39 or below are not vulnerable.

* The kea-dhcp6 server is vulnerable only in versions 0.9.2 and 1.0.0-beta, and furthermore only when logging at debug level 45 or higher. Servers running kea-dhcp6 versions 0.9.1 or lower, and servers which are not logging or are logging at debug level 44 or below are not vulnerable.

An attacker sending a crafted malformed packet can cause an ISC Kea server providing DHCP services to IPv4 or IPv6 clients to exit unexpectedly.

External References:

https://kb.isc.org/article/AA-01318
Comment 1 Martin Prpič 2015-12-23 04:42:47 EST
Created kea tracking bugs for this issue:

Affects: fedora-all [bug 1293858]
Comment 2 Fedora Update System 2016-01-07 22:27:07 EST
kea-0.9.2-2.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.
Comment 3 Fedora Update System 2016-01-10 14:25:06 EST
kea-1.0.0-1.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.

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